Digi CCIMX28 802.11a/b/g/n Embedded Client Module User Manual ConnectCore for i MX28 HRM

Digi International Inc 802.11a/b/g/n Embedded Client Module ConnectCore for i MX28 HRM

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Hardware Reference

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Application IDIeCQ7rHCIC4lde+jFpyB8Q==
Document DescriptionHardware Reference
Short Term ConfidentialNo
Permanent ConfidentialNo
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Document TypeUser Manual
Display FormatAdobe Acrobat PDF - pdf
Filesize283.63kB (3545351 bits)
Date Submitted2013-05-02 00:00:00
Date Available2013-05-03 00:00:00
Creation Date2013-04-24 08:33:59
Producing SoftwareAcrobat Distiller 9.5.3 (Windows)
Document Lastmod2013-04-24 09:14:09
Document TitleConnectCore for i.MX28 HRM.book
Document CreatorFrameMaker 9.0
Document Author: akuzensk

ConnectCore™ for i.MX28™
Hardware Reference
90002181_C
4/24/2013
©2012 Digi International Inc.
All rights reserved.
Digi, Digi International, the Digi logo, a Digi International Company, Digi JumpStart Kit, ConnectCore, NET+,
NET+OS, NET+Works, and XBee are trademarks or registered trademarks of Digi International, Inc. in the United
States and other countries worldwide. All other trademarks are the property of their respective owners.
All other trademarks mentioned in this document are the property of their respective owners.
Information in this document is subject to change without notice and does not represent a commitment on the
part of Digi International.
Digi provides this document “as is,” without warranty of any kind, either expressed or implied, including, but
not limited to, the implied warranties of fitness or merchantability for a particular purpose. Digi may make
improvements and/or changes in this manual or in the product(s) and/or the program(s) described in this manual
at any time.
This product could include technical inaccuracies or typographical errors. Changes are periodically made to the
information herein; these changes may be incorporated in new editions of the publication.
© 2013 Digi International, Inc.
Contents
Chapter 1: ConnectCard for i.MX28 Features and Functionality12
i.MX28 Features and Functionality......................................... 13
Block Diagram ................................................................. 14
CPU - Freescale i.MX28X ................................................... 14
ConnectCard for i.MX28 .................................................... 15
Module Pinout ................................................................. 16
52-Pin PCle Edge Connector ............................................... 16
Pinout ......................................................................... 16
Available Features............................................................ 19
Available Features - i.MX280 and i.MX287 ............................... 19
Thermal Considerations ..................................................... 20
31 Pin LCD, JTAG, and ETM Connector .................................... 20
Standard 18 Bit Color Pinout .............................................. 21
24 bit Color Pinout (without JTAG) ....................................... 22
Module Operation ........................................................... 23
DC Power ..................................................................... 23
Thermal Considerations .................................................... 23
System Boot .................................................................. 23
Audio System ................................................................. 24
LCD System ................................................................... 24
GPIO ........................................................................... 24
Interfaces ..................................................................... 25
Chapter 2: About the Development Board ..................... 30
What’s on the Development Board? ....................................... 30
The Development Board .................................................... 32
Development Board Set Up.................................................. 36
Power Supplies ............................................................... 36
Power over Ethernet (PoE) - IEEE802.3af ................................ 37
The PoE Module .............................................................. 38
PoE Connector (power in), P28 ............................................ 39
PoE Connector (power out), P33 .......................................... 39
Connector, Switch, and Jumper Locations ............................... 40
Power Functions and Settings ............................................. 41
Boot Mode ..................................................................... 41
Switch Location ............................................................... 42
Function and Settings ....................................................... 43
Development Board Button Functions ..................................... 43
XBEE RESET BUTTON and XBEE COMM BUTTON ......................... 43
© 2013 Digi International, Inc.
Contents
USER BUTTON1 and USER BUTTON2 ...................................... 43
CCi.MX28 RESET BUTTON .................................................. 43
CCi.MX28 POWER BUTTON ................................................. 43
CCi.MX28 RECOVERY BUTTON ............................................. 43
Button Locations.............................................................. 44
DUART (Console) and I2C0 .................................................. 45
Connector and Switch Locations .......................................... 45
Functions and Settings ..................................................... 46
AUART1, ENET0, LRADC4, LRADC5, and User LEDs ...................... 46
AUART1 ....................................................................... 46
ENET0 ......................................................................... 46
LRADC4 & LRADC5 ........................................................... 46
User LEDs ..................................................................... 46
Connector and Switch Locations .......................................... 47
Function and Settings ....................................................... 47
AUART4, SSP3, I2S (Audio), LRADC6, and XBee .......................... 49
AUART4 ....................................................................... 49
SSP3 ........................................................................... 49
I2S (Audio) .................................................................... 49
LRADC6 ........................................................................ 49
XBee ........................................................................... 49
Connector and Switch Locations .......................................... 50
Function and Settings Table - AUART4 ................................... 51
Function and Settings Table - SSP3 ....................................... 51
Function and Settings Table - I2S ......................................... 52
Function and Settings Table - XBee ...................................... 53
Function and Settings Table - LRADC6 ................................... 53
AUART2 (TTL), AUART3 (TTL), CAN1, ETHERNET (ENET1), and USB Host (USB1)
55
AUART2 (TTL) ................................................................ 55
AUART3 ....................................................................... 55
CAN1 ........................................................................... 55
ETHERNET .................................................................... 55
USB HOST (USB1) ............................................................ 55
Connector, Switch, and Jumper Locations .............................. 56
Function and Settings Table - AUART3 ................................... 57
Function and Settings Table - CAN1 ...................................... 57
Function and Settings Table - ENET1 ..................................... 57
Function and Settings Table - USB1 ...................................... 58
SD CARD, SSP1, LRADC0, LRADC1, LRADC2, and LRADC3 ............... 59
SD CARD ....................................................................... 59
© 2013 Digi International, Inc.
Contents
SSP1 ........................................................................... 59
LRADC0, LRADC1, LRADC2 and LRADC3 .................................. 59
Connector, Switch, and Jumper Locations .............................. 59
Function and Settings Table - SSP1 ....................................... 60
Function and Settings Table - LRADC0-3 ................................. 60
CAN0, HSADC, AND1-Wire ................................................... 61
CAN0 ........................................................................... 61
HSADC ......................................................................... 61
1-Wire ......................................................................... 61
Connector, Switch, and Jumper Locations .............................. 62
Function and Settings Table .............................................. 62
LCD, ETM, JTAG, USB OTG (USB0) ......................................... 63
Connector and Jumper Locations ......................................... 63
Functions and Settings ..................................................... 63
Chapter 3: Certifications................................................ 65
Agency Certifications ........................................................ 65
United States FCC ........................................................... 65
FCC-Approved Antennas .................................................... 66
Antennas Approved for Use with the ConnectCard™ for i.MX28 Wi-Fi Modules 67
RF Exposure .................................................................. 67
Europe (ETSI) .................................................................. 67
OEM Lebeling Requirements ............................................... 68
Restrictions ................................................................... 68
Canada (IC) .................................................................... 69
Labeling Requirements ..................................................... 69
Transmitters with Detachable Antennas ................................. 69
Detachable Antenna ........................................................ 70
Australia (C-Tick) ............................................................. 70
Appendix A: Module Specifications ....... 71
Mechanical Specifications ................................................... 71
Dimensional Drawing ........................................................ 71
Environmental Specifications .............................................. 71
Network Interface ............................................................ 72
Digi part number A24-HASM-450 .......................................... 72
Digi part number 29000146 ................................................ 73
Taoglas PC.11.07.0100A ................................................... 74
Taoglas FXP.830.07.0100C ................................................ 76
Ethernet 2 .................................................................... 78
© 2013 Digi International, Inc.
Contents
WLAN .......................................................................... 78
5GHz HT20 AND HT40 Channels Available ............................... 81
Receive Sensitivity .......................................................... 82
Electrical Characteristics.................................................... 82
Absolute Maximum Ratings ................................................ 82
Voltage Supplies ............................................................. 83
Supply Current ............................................................... 83
Transmit Power .............................................................. 83
GPIO DC Parameters ........................................................ 83
Agency Approvals ............................................................. 84
Appendix B: Module Dimensions ........... 85
................................................................................. 85
Appendix C: Change Log ..................... 86
Revision 0.1.................................................................... 86
© 2013 Digi International, Inc.
Using this Guide
This guide provides information about the Digi ConnectCore™ for i.MX28 embedded
core module family.
Conventions used in this guide
This table describes the typographic conventions used in this guide:
This convention
Is used for
italic type
Emphasis, new terms, variables, and document titles.
monospaced type
Filenames, pathnames, and code examples.
Digi Information
Document Updates
Please always check the product specific section on the Digi support website at
www.digiembedded.com/support for the most current revision of this document.
Contact Information
For more information about your Digi products, or for customer service and
technical support, contact Digi International.
To contact Digi International by
Use
Mail
Digi International
1101 Bren Road East
Minnetonka, MN 55343
U.S.A.
Internet
http://www.digiembedded.com/support/
Telephone (U.S.)
(952) 912-3444 or (877) 912-3444
Telephone (other locations)
+1 (952) 912-3444 or (877) 912-3444
Additional Resources
Please also refer to the most recent Freescale® i.MX28 Application Processor
Reference Manual and related documentation (available on the Freescale web site)
for additional information.
© 2013 Digi International, Inc.
ConnectCard for i.MX28
Features and Functionality
he ConnectCard™ for i.MX28 is a cost-effective, small-footprint wireless embedded
module solution that is designed for connected devices in healthcare and other markets.
The module is based on the Freescale® i.MX28 processor family with a high-performance
ARM 9 core, multimedia options, and a complete set of peripherals.
Combined with a Qualcom-Atheros 802.11 and Bluetooth module featuring data rates up to
150Mbps the ConnectCard for i.MX28 is capable of communicating with a vast number of
peripheral devices over many different networks.
The module combines the fast integration, reliability and design flexibility of an off-theshelf System-on Module (SOM) with complete out-of-the-box software development support
for platforms such as Digi® Embedded Linux ®and Timesys® LinuxLink®.
Complete and cost-efficient Digi Jump Start Kits™ Linux allows immediate and professional
embedded product development with dramatically reduced design risk and time-to-market.
© 2013 Digi International, Inc.
Conn ectCor e™ for i.MX 28™ Ha rdwa re Re fe rence
i.MX28 Features and Functionality
The ConnectCard for i.MX28 module is based on the i.MX28 processor series from Freescale.
This processor offers a high number of interfaces. Most of these interfaces are multiplexed
and are not available simultaneously. Not all features are available on all variations of the
module. More in-depth information can be found in the "i.MX28 Application Processor
Reference Manual" on the Freescale web site. The i.MX28 processor uses an ARM 926 core
with on-chip RISC (Reduced Instruction Set Computer).
The ConnectCard for i.MX28 module has the following i.MX28 features:
LRADC
(Low Resolution ADC)
HSADC
(High Speed ADC)
GPIO
(General Purpose Input Output)
SD/SDIO/MMC
UART
(Secure Digital/ Secure Digital Input Output/ Multi-Media Card)
(Universal Asynchronous Receiver/Transmitter)
DUART
(Debug Universal Asynchronous Receiver/Transmitter)
SPI
(Serial Peripheral Interface)
I2C
(Inter-Integrated Circuit)
CAN
(Controller Area Network)
USB
OTG (Universal Serial Bus On-the-Go)
USB
Host (Universal Serial Bus)
ENET
SAIF
(Ethernet)
(Serial Audio Interface)
PWM
(Pulse Width Modulator)
LCD
(Liquid Crystal Display)
ETM
(Embedded Trace Macrocell)
JTAG
(Joint Test Action Group)
802.11
abgn and Bluetooth
Flash
Memory
DDR2
Memory
One-Wire
Power
© 2013 Digi International, Inc.
Interface
supply options - Battery and DC
Conn ectCor e™ for i.MX 28™ Ha rdwa re Re fe rence
Block Diagram
The following figures show the block diagram of the Freescale i.MX285 CPU and the block
diagram of the ConnectCore for i.MX28 module.
CPU - Freescale i.MX28X
© 2013 Digi International, Inc.
10
Conn ectCor e™ for i.MX 28™ Ha rdwa re Re fe rence
ConnectCard for i.MX28
© 2013 Digi International, Inc.
11
Conn ectCor e™ for i.MX 28™ Ha rdwa re Re fe rence
Module Pinout
The module has 2 connectors. The 52 pin PCIe edge connector, and the 31 pin LCD connector.
52-Pin PCle Edge Connector
The top side of the module has the shield on it and the bottom side of the module has the
i.MX28X on it. Pin numbering is shown below:
Pinout
Pin
Pin Name
Avail. on
i.MX287
Avail. on
i.MX280
ENET0_TX+
ENET0_TX-
GND
AUART4_CTS
AUART4_RTS
11
AUART4_RX
13
AUART4_TX
© 2013 Digi International, Inc.
Mux 0
Mux 1
Mux 2
Mux 3
SAIF0_MCLK
PWM_3
AUART4_CTS
GPIO3_20
SSP3_SS0
AUART4_CTS
ENET1_1588_EVENT1
_IN
GPIO3_27
SAIF0_LRCLK
PWM4
AUART4_RST
GPIO3_21
SSP3_MOSI
AUART4_RX
ENET1_1588_EVENT0
_IN
GPIO3_25
SAIF0_BITCLK
PWM_5
AUART4_RX
GPIO3_22
SSP3_MISO
AUART4_RTS
ENET1_1588_EVENT1
_OUT
GPIO3_26
SAIF0_SDAT0
PWM_6
AUART4_TX
GPIO3_23
SSP3_SCK
AUART4_TX
ENET1_1588_EVENT0
_OUT
GPIO3_24
12
Conn ectCor e™ for i.MX 28™ Ha rdwa re Re fe rence
Pin
Pin Name
Avail. on
i.MX287
Avail. on
i.MX280
15
Mux 0
Mux 1
Mux 2
Mux 3
Pswitch
17
USB0_DM
19
USB0_DP
21
USB0_ID
PWM_2
USB0_ID
USB1
_OVERCURRENT
GPIO3_18
23
Battery
25
HSADC0
27
CAN0_RX
GPMI_READY3
CAN0_RX
HSADC_TRIGGER
GPIO0_23
29
CAN0_TX
GPMI_READY2
CAN0_TX
ENET0_TX_ER
GPIO0_22
31
SSP1_SS
SSP1_SS
SSP2_D7
ENET0_1588_EVENT3
_IN
GPIO2_15
SSP2_D2
ENET0_1588_EVENT2
_IN
GPIO2_13
SSP2_D6
ENET0_1588_EVENT3
_OUT
GPIO2_14
SSP2_D1
ENET0_1588_EVENT2
_OUT
GPIO2_12
USB0
_OVERCURRENT
TIMROT_ROTARYA
GPIO3_6
USB0_ID
TIMROT_ROTARYA
GPIO3_7
GAP
33
SSP1_MOSI
35
SSP1_MISO
SSP1_SCK
39
AUART1_CTS
AUART1_RTS
LRADC1
SSP1_MISO
LRADC2
SSP1_SCK
41
LRADC0
SSP1_MOSI
37
HSADC0
LRADC3
AUART1_CTS
LRADC4
AUART1_RTS
LRADC5
43
AUART1_TX
AUART1_TX
SSP3_CARD
_DETECT
PWM1
GPIO3_5
45
AUART1_RX
AUART1_RX
SSP2_CARD
_DETECT
PWM0
GPIO3_4
47
GND
49
ENET1_TX+
51
ENET1_TX-
ENET0_RX+
© 2013 Digi International, Inc.
13
Conn ectCor e™ for i.MX 28™ Ha rdwa re Re fe rence
Pin
Pin Name
Avail. on
i.MX287
Avail. on
i.MX280
Mux 0
Mux 1
Mux 2
Mux 3
ENET0_RX-
VDD_5V
I2C1_SCL
PWM0
I2C1_SCL
DUART_RX
GPIO3_17
10
I2C1_SDA
PWM1
I2C1_SDA
DUART_TX
GPIO3_16
12
DUART_RX
I2C0_SCL
TIMROT_ROTARYA
DUART_RX
GPIO3_24
14
DUART_TX
I2C0_SDA
TIMROT_ROTARYB
DUART_TX
GPIO3_25
16
RESET
18
SSP0_CMD
SSP0_CMD
GPIO2_8
20
SSP0_DATA0
SSP0_DATA0
GPIO2_0
22
SSP0_DATA1
SSP0_DATA1
GPIO2_1
GAP
24
SSP0_DATA2
AUART3_CTS
CAN1_TX
ENET0_1588_EVENT1
_OUT
SSP0_DATA2
AUART3_RTS
GPIO3_14
GPIO2_2
CAN1_RX
ENET0_1588_EVENT1
_IN
GPIO3_15
26
SSP0_DATA3
SSP0_DATA3
GPIO2_3
28
SSP0_SCLK
SSP0_SCK
GPIO2_10
30
SSP0_CARD
_DETECT
SSP0_CARD
_DETECT
GPIO2_9
32
LRADC6 /
SAIF1_DATA0
LRADC6
34
i.MX28 3.3V
Output
36
AUART2_CTS
One-Wire
38
AUART2_RTS
40
LCD_VSYNC
SAIF1_DATA0
GPIO_1_28
AUART2_CTS
I2C1_SCL
SAIF1_BITCLK
GPIO3_10
AUART2_RTS
I2C1_SDA
SAIF1_LRCLK
GPIO3_11
AUART2_RX
AUART2_RX
SSP2_D2
SSP3_D5
GPIO3_8
42
AUART2_TX
AUART2_TX
SSP3_D1
SSP3_D4
GPIO3_9
44
CAN1_RX
GPMI_CE3N
CAN1_RX
SAIF1_MCLK
GPIO0_19
AUART3_RX
CAN0_TX
ENET0_1588_EVENT0
_OUT
GPIO3_13
© 2013 Digi International, Inc.
14
Conn ectCor e™ for i.MX 28™ Ha rdwa re Re fe rence
Pin
Pin Name
Avail. on
i.MX287
46
CAN1_TX
Mux 0
Mux 1
Mux 2
Mux 3
GPMI_CE2N
CAN1_TX
ENET0_RX_ER
GPIO0_18
AUART3_TX
CAN0_RX
ENET0_1588_EVENT0
_IN
GPIO3_12
48
VDD_5V
50
ENET1_RX+
Avail. on
i.MX280
USB1_DM
52
ENET1_RX-
USB1_DM
USB1_DP
USB1_DP
Available Features
Standard variants are available with either the i.MX280 or i.MX287. Not all features are available on
all variants. For custom variants see your Digi International sales person.
Available Features - i.MX280 and i.MX287
Function
i.MX280
i.MX287
LCD Interface
Yes
Touch Screen
Yes
x1
x2
L2 Switch
Yes
CAN
x2
12-bit ADC
x8
x8
High-speed ADC
x1
x1
OTG HS with HS
PHY x1
OTG HS with HS
PHY x1
HS Host with HS
PHY x1
HS Host with HS
PHY x1
SDIO
x4
x4
SPI
x4
x4
Application UART
x6
x5
Debug UART
x1
x1
PWM
x8
S/PDIF Tx
Yes
Yes
Yes
Ethernet
USB 2.0
Security
© 2013 Digi International, Inc.
15
Conn ectCor e™ for i.MX 28™ Ha rdwa re Re fe rence
Thermal Considerations
Heat dissipation of the i.MX28 processor is highly dependent on the selected clock speed and
the peripherals it is supporting. Freescale specifies the maximum allowed junction
temperature of the processor to be limited to 105C, which translates to the following
processor case temperatures:
Processor Speed
Max Ambient Temperature w/o
Thermal Pad
Max Case Temperature
454 MHz
59 C
84 C
360 MHz
68 C
88 C
261 MHz
69 C
88 C
64 MHz
99 C
102 C
The ConnectCard for i.MX28 has been built to function up to 65C at full clock speed without a
thermal pad attached (not included in the development kit) between the processor and the
development board, and has been checked up to 75C with the thermal pad attached. There is
a large ground area left open under the module on the development board under the module
to accommodate the thermal pad. Bergquist makes thermal pad material in various
thicknesses. The CCi.MX28 has been characterized using a combination of 2500S20 and
2000S40 pads from Bergquist.
Designs using the ConnectCard for i.MX28 need to ensure that the rating maximums above are
not exceeded in the application. Case temperature can be measured using an external probe
on the center of the i.MX28 processor package, and the junction temperature can be
monitored in software through an on-die temperature sensor provided in the i.MX processor.
Because of the limitation above, active and/or passive thermal management may be required
(thermal pad, airflow, clocking, etc.) like the Bergquist 2500s20 and 2000S40 thermal pads.
For more information on thermal consideration with the i.MX28 processor see the Freescale
i.MX28 data sheet.
31 Pin LCD, JTAG, and ETM Connector
The module uses a 31 pin ZIF connector for the LCD, JTAG and ETM connections. These pins
can also be used for GPIO functions. A list of possible connectors is shown below, the list is
not all inclusive:
Manufacturer
Part Number
FCI
SFV31R-1STE1HLF
FCI
SFV31R-1STE1LF
TYCO ELECTRONICS
3-1734839-1
The standard connection is 18 bit color, and the CC-WMX-PF58-TK-JT comes with this option.
© 2013 Digi International, Inc.
16
Conn ectCor e™ for i.MX 28™ Ha rdwa re Re fe rence
Standard 18 Bit Color Pinout
Pin
Pin Name
i.MX28
Mux 0
Mux 1
Mux 2
Mux 3
LCD_DOTCLK
N1
LCD_DOTCLK
SAIF1_MCLK
ETM_TCLK
GPIO1_30
LCD_VSYNC
M6
LCD_RESET
LCD_VSYNC
LCD_RESET /
LCD_VSYNC
GPIO3_31
LCD_HSYNC
M1
LCD_HSYNC
SAIF1_SDATA1
EMT_TCTL
GPIO1_29
LCD_ENABLE
N5
LCD_ENABLE
LCD_ENABLE
LCD_WR_RWN /
ETM_TCLK
K1
LCD_WR_RWN
LCD_HSYNC
LCD_D17
R3
LCD_D16
GPIO1_25
ETM_TCLK
GPIO1_32
LCD_D17
ETM_DA6
GPIO1_17
T3
LCD_D16
ETM_DA16
GPIO1_16
LCD_D15 / ETM_DA15
U3
LCD_D15
ETM_DA15
GPIO1_15
LCD_D14 / ETM_DA14
U2
LCD_D14
ETM_DA14
GPIO1_14
10
LCD_D13 / ETM_DA13
T2
LCD_D13
ETM_DA13
GPIO1_13
11
LCD_D12 / ETM_DA12
T1
LCD_D12
ETM_DA12
GPIO1_12
12
LCD_D11 / ETM_DA11
R2
LCD_D11
ETM_DA11
GPIO1_11
13
LCD_D10 / ETM_DA10
R1
LCD_D10
ETM_DA10
GPIO1_10
14
LCD_D09 / ETM_DA9
P3
LCD_D09
ETM_DA4
ETM_DA9
GPIO1_0
15
LCD_D08 / ETM_DA8
P2
LCD_D08
ETM_DA3
ETM_DA8
GPIO1_8
16
LCD_D07 / ETM_DA7
P1
LCD_D07
ETM_DA7
GPIO1_7
17
LCD_D06 / ETM_DA6
N2
LCD_D06
ETM_DA6
GPIO1-6
18
LCD_D05 / ETM_DA5
M3
LCD_D05
ETM_DA5
GPIO1_5
19
LCD_D04 / ETM_DA4
M2
LCD_D04
ETM_DA9
ETM_DA4
GPIO1_4
20
LCD_D03 / ETM_DA3
L3
LCD_D03
ETM_DA8
ETM_DA3
GPIO1_3
21
LCD_D02 / ETM_DA2
L2
LCD_D02
ETM_DA2
GPIO1_2
22
LCD_D01 / ETM_DA1
K3
LCD_D01
ETM_DA1
GPIO1_1
23
LCD_D00 / ETM_DA0
K2
LCD_D00
ETM_DA0
GPIO1_0
24
ETM_TCTL
P4
LCD_RD_E
ETM_TCTL
GPIO1_24
25
LCD_CS /
Touch_Interrupt
P5
LCD_CS
26
JTAG_TRST#
D14
JTAG_RTCK
27
JTAG_TMS
D12
28
JTAG_TDO
E13
29
JTAG_TDI
E12
© 2013 Digi International, Inc.
LCD_VSYNC
GPIO1_27
17
Conn ectCor e™ for i.MX 28™ Ha rdwa re Re fe rence
Pin
Pin Name
i.MX28
30
JTAG_TCK
E11
31
JTAG_RTCK
E14
Mux 0
Mux 1
Mux 2
Mux 3
Provisions have been made on the module for 24 bit color without the JTAG connections.
24 bit Color Pinout (without JTAG)
Pin
Pin Name
i.MX28
Pin
Mux 0
Mux 1
Mux 2
LCD_DOTCLK
N1
LCD_DOTCLK
SAIF1_MCLK
ETM_TCLK
LCD_VSYNC
M6
LCD_RESET
LCD_VSYNC
LCD_HSYNC
M1
LCD_HSYNC
SAIF1_SDATA1
EMT_TCTL
LCD_ENABLE
N5
LCD_ENABLE
LCD_WR_RWN /
ETM_TCLK
K1
LCD_WR_RWN
LCD_HSYNC
ETM_TCLK
LCD_D17
R3
LCD_D17
ETM_DA6
LCD_D16
T3
LCD_D16
ETM_DA7
LCD_D15 / ETM_DA15
U3
LCD_D15
ETM_DA15
LCD_D14 / ETM_DA14
U2
LCD_D14
ETM_DA14
10
LCD_D13 / ETM_DA13
T2
LCD_D13
ETM_DA13
11
LCD_D12 / ETM_DA12
T1
LCD_D12
ETM_DA12
12
LCD_D11 / ETM_DA11
R2
LCD_D11
ETM_DA11
13
LCD_D10 / ETM_DA10
R1
LCD_D10
ETM_DA10
14
LCD_D09 / ETM_DA9
P3
LCD_D09
ETM_DA4
ETM_DA9
15
LCD_D08 / ETM_DA8
P2
LCD_D08
ETM_DA3
ETM_DA8
16
LCD_D07 / ETM_DA7
P1
LCD_D07
ETM_DA7
17
LCD_D06 / ETM_DA6
N2
LCD_D06
ETM_DA6
18
LCD_D05 / ETM_DA5
M3
LCD_D05
ETM_DA5
19
LCD_D04 / ETM_DA4
M2
LCD_D04
ETM_DA9
ETM_DA4
20
LCD_D03 / ETM_DA3
L3
LCD_D03
ETM_DA8
ETM_DA3
21
LCD_D02 / ETM_DA2
L2
LCD_D02
ETM_DA2
22
LCD_D01 / ETM_DA1
K3
LCD_D01
ETM_DA1
23
LCD_D00 / ETM_DA0
K2
LCD_D00
ETM_DA0
24
ETM_TCTL
P4
LCD_RD_E
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LCD_VSYNC
ETM_TCTL
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Conn ectCor e™ for i.MX 28™ Ha rdwa re Re fe rence
Pin
Pin Name
i.MX28
Pin
Mux 0
Mux 1
Mux 2
25
LCD_CS /
Touch_Interrupt
P5
LCD_CS
LCD_ENABLE
26
LCD_D18
U4
LCD_D18
ETM_DA18
27
LCD_D19
T4
LCD_D19
ETM_DA19
28
LCD_D20
R4
LCD_D20
ENET1_1588_EVENT2_OUT
ETM_DA3
29
LCD_D21
U5
LCD_D21
ENET1_1588_EVENT2_IN
ETM_DA2
30
LCD_D22
T5
LCD_D22
ENET1_1588_EVENT3_OUT
ETM_DA1
31
LCD_D23
R5
LCD_D23
ENET1_1588_EVENT3_IN
ETM_DA0
Module Operation
Not all functions are available at the same time or on all module variants. The configuration
of the resources will depend on the system requirements, and some planning may be
required to set up the available interfaces in a particular application.
DC Power
The ConnectCard for i.MX28 has 5V and Battery inputs:
The 5V supply will have a maximum of 5.25V and a minimum operating voltage of 4.75V. This
supply is assumed to come from a regulated supply with about 1A of current capability. The
development board supply can generate up to 1.5A.
The Battery voltage needs to be between 3.4 and 4.242V. If both 5V and Battery supplies are
connected the module will automatically use the 5V supply.
In addition, there is a +3.3V line coming out of the module which can be used to power
external circuitry. This supply can be disabled in low power mode so that it can be used as a
low power configuration signal.
Thermal Considerations
At high clock rates the i.MX28 will pull more current. The ConnectCard for i.MX28 has been
built to function up to 65C at full clock speed with a thermal pad attached (not included in
the development kit) between the processor and the development board. There is a large
ground area left open under the module on the development board under the module to
accommodate the thermal pad. Bergquist makes thermal pad material in various
thicknesses. The CCi.MX28 has been characterized using a combination of 2500S20 and
2000S40 pads from Bergquist. Consult the Freescale data sheet for the i.MX28 for thermal
requirements.
System Boot
The ConnectCard for i.MX28 boot process begins at Power On Reset when the hardware reset
logic forces the ARM core to begin execution starting from the on-chip boot ROM. Boot ROM
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code uses the state of the internal register BOOT_MODE[1:0] as well as the state of various
eFUSEs and/or GPIO settings to determine the boot flow behavior of the module.
The following Boot modes are supported:
Boot
from FLASH
Boot
from SD Card
Boot
from USB
Boot
from JTAG
Each mode is selected by applying the proper bit pattern to LCD_D00, LCD_D01, LCD_D02,
LCD_D03, and LCD_D04. The default boot mode is FLASH. No internal eFUSEs have been set.
For more information on boot modes, please refer to chapter 12 of the Freescale
documentation.
Audio System
The audio system is using an SAIF interface configured as I2S.
LCD System
The LCD is available through a 31 pin ZIF connector on the top side of the module (see
variants for availability). The development kit uses a cable from NICOMATIC (part number
050P331K0076-406406 ). The default LCD setting is for 18 bit color, and the development
board is set up for this setting as well. A special 24 bit color option is available (not
supported in current variant list) but will disconnect the JTAG functionality. Touch screen
functionality is supported by connecting LRADC2-5. There are multiple SPI ports available to
communicate with a SPI touch screen controller (the development board uses SSP1).
PWM0,1,3,4,5 and 6 are available to use for backlight control (the development board uses
PWM0).
GPIO
In general any of the modules digital pins can be set as a GPIO. There are 3 available states
for any GPIO-- low, high , and high impedance. Each of the GPIO pins is capable of
functioning on either at 1.8 or 3.3V as well as an interrupt/trigger pin. Each individual GPIO
can be dynamically programmed at any time to be in either: High-impedance (for input,
three-state, or open-drain applications); Low; High; or Controlled by one of the three
selectable i.MX28 peripheral module interfaces. The state of any GPIO pin can be read at
any time regardless of its configuration. Analog pins may not be set as GPIO. The following
functions cannot be used for GPIO functions:
Ethernet
USB
LRADC
(although muxed functions can be used)
HSADC
One
Wire (Technically it could be by controlling the I2C line)
JTAG
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PSWITCH
RESET
DC
connections (5V, Battery, and GND)
Interfaces
1- Wire
The ConnectCard for i.MX28 provides a 1-wire interface to communicate with 1-wire devices
such as EEPROMs, secure memory and sensors. The required protocol for accessing the
generic 1-wire device is defined by Maxim. The Maxim DS2482-100 interface is used for 1Wire communication. The 1-wire interface uses a strong 3.3V pull-up.
ADCs and Touc h Scr een
The ConnectCard for i.MX28 provides both Low-Resolution ADC's (LRADC) and a High speed
ADC (HSADC). In either case, the ADC's have 12 bit resolution and an absolute accuracy of
1.3%.
LRADC's can operate with up to 3.3V inputs, with an absolute accuracy of 1.3%. In addition to
ADC functions, LRADC 2-6 can also be used for touch screen control (2-5 are used on the
development board for touch screen control). There are 16 ADC channels available, the
channel assignments are shown in the table below:
ADC Channel Number
0-6
Assignment
LRADC0-6 measure the voltage on the seven application-dependant LRADC
pins.
LRADC2-6 can be used for 4/5-wire touch screen control.
LRADC6 can be used for a wiper of 5-wire touch screen controller and external
temperature sensing, but they cannot be enabled at the same time in hardware
configuration.
Dedicated to measuring the battery voltage.
8, 9
Dedicated to measuring the internal die temperature.
10
Dedicated to measuring the internal 3.3V rail, and for calibrating the voltage
levels measured on the auxiliary channels.
11
Reserved input for analog testing.
12
Dedicated to measuring the internal 1.8V rail.
13
Dedicated to measuring the internal 1.5V rail.
14
Dedicated to measuring the band gap reference voltage and can be used to
calibrate out a portion of the LRADC measurement error. In most cases the band
gap reference error dominates the total LRADC error, and this calibration is not
helpful.
15
Dedicated to measuring the 5V supply to detect possible issues with the 5V rail
dropping.
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The HSADC is capable of measuring up to 2Msps, and can be used in conjunction with the
PWM's to generate signals for external devices like a linear image scanner sensor. The HSADC
can be triggered to start the conversion of an analog source in three modes:
Trigger
by Software
Trigger
signal generated by the PWM block
Trigger
by an input pin from an external source
CAN
The ConnectCard for i.MX28 includes two FlexCAN2 controllers which are compatible with
the CAN 2.0B protocol specification. The CAN Protocol Interface (CPI) manages the serial
communication on the CAN bus, requesting RAM access for receiving and transmitting
message frames, validating received messages and performing error handling. The Message
Buffer Management (MBM) handles Message Buffer selection for reception and transmission,
taking care of arbitration and ID matching algorithms. The CAN bus can operate up to 1Mbps
The FlexCAN2 controllers require additional hardware, an example of this circuitry can be
found on the development board.
Ethernet
The ConnectCard for i.MX28 provides up to two 10/100 Mbps Ethernet connections (see
variants table for number of Ethernet connections). The MAC and PHY are on the module,
and the Magnetics and Jack need to be provided external to the module. The connections
from the module are differential pairs for the TX and RX ports. In variants with 1 Ethernet 2
USB ports are provided.
USB
The ConnectCard for i.MX28 includes up to two high-speed Universal Serial Bus (USB) version
2.0 controllers and integrated USB Transceiver Macrocell Interface (UTMI) PHYs. The i.MX28
device interface can be attached to USB 2.0 hosts and hubs running in the USB 2.0 high-speed
mode at 480 Mbps. It can be attached to USB 2.0 full-speed interfaces at 12 Mbps. Note that
a dual-device configuration is not supported. The USB controllers and integrated PHYs
support high-speed Host modes for peer-to-peer file interchange. The USB controller can also
be configured as a high-speed host.
Each USB is a dynamically configured port that can support up to seven RX and seven TX
endpoints besides EP0, each of which may be configured for bulk, interrupt, or isochronous
transfers.
USB0 is a high speed, OTG-capable universal serial bus. The ConnectCard for i.MX28 can
operate as a host controller that can support eight endpoints: one control, one bulk-out, one
bulk-in, and five flexible endpoints. Further, it can negotiate with another OTG system to be
either the host or the device in a peer connection.
Note that USB1 is a host-only USB port.
Variants with two USB ports have only one Ethernet port, as noted in the Ethernet section
above.
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I2C
The ConnectCard for i.MX28 contains 2 two-wire SMB/I2C bus interfaces. Each interface can
act as a slave or a master on the SMB. The I2C interfaces are multiplexed with the DUART,
and I2C0 is used for the DUART on the development board, and no termination resistors are
on the module for this interface. I2C1 is used to run the 1-wire interface, and 2.2K ohm
termination resistors are located on the module. The supply voltage of these resistors is
3.3V.
The I2C bus is a standard two-wire serial interface for connecting the ConnectCard for i.MX28
to peripheral devices or host controllers. The I2C buss operates at a standard speed of up to
100Kbps and a fast speed of up to 400Kbps. The ConnectCard for i.MX28 can act as either
master of slave on the I2C bus. This module is also capable of supporting multi-master
configurations. The device address of the 1-wire bridge is 00, and cannot be used by other
I2C devices connected to the I2C1 bus.
SAI F (A u di o)
The ConnectCard for i.MX28 includes a Serial Audio Interface (SAIF) configured as an I2S
intervace. It is capable of transmitting and receiving in 16 or 24 bit audio, by connecting to
an audio codec. A possible example circuit is shown in the development board schematics.
A U A R Ts a n d D U A R T
Up to four application UARTs (AUART), and 1 debug (console) DUART are available on the
ConnectCard for i.MX28 module. The AUARTs are capable of running up to 3.25 Mbps, while
the DUART is capable of speeds up to 115Kbps. Variants using the i.MX287 include flow
control on all application UARTs.
Through the DUART the CPU reads and writes data and control/status information through
the APBX interface. The DUART does the serial to parallel conversions on data received from
a peripheral device and the parallel to serial conversion on data transmitted to the
peripheral device. The buffer size for the DUART is 32 bytes. Flow control is not included for
the debug UART.
P u l s e W i dt h M o d u l a t o r ( P W M )
The ConnectCard for i.MX28 module provides access to PWM0 through PWM6. The PWMs can
be used in place of GPIO pins to control such things as LED Brightness, HSADC, and LCD
backlight control. Independent output control of each phase allows 0, 1, or high-impedance
to be independently selected for the active and inactive phases. Individual outputs can be
run in lock step with guaranteed non-overlapping portions for differential drive applications.
S y n c h ro n o u s S e r i a l P o r t s ( S P I , a n d S D )
The three available Synchronous Serial Ports on the ConnectCard for i.MX28 module can
support SPI master and Slave modes up to 52MHz speeds. In addition SSP0 is capable of SD
card functions including booting.
Real Time Clock (RTC)
The real-time clock (RTC) and alarm share a one-second pulse time domain. The watchdog
reset and millisecond counter run on a one-millisecond time domain. The RTC, alarm, and
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Conn ectCor e™ for i.MX 28™ Ha rdwa re Re fe rence
persistent bits use persistent storage and reside in a special power domain (crystal domain)
that remains powered up even when the rest of the chip is in its powered-down state.
The ConnectCard for i.MX28 development board does not include a backup battery, so the
RTC will not be maintained through power cycles.
Liquid Crystal Display (LCD)
Some versions of the ConnectCard for i.MX28 includes an LCD connector that is separate from
the edge connector. Smart LCDs are available in a range of sizes and capabilities, from simple
text-only displays to WVGA, 16/18/24 bpp color TFT panels. This device supports displays
that support moving pictures and require the RGB interface mode (called DOTCLK interface
in this document).
Wi-Fi and Bluetooth
The ConnectCard for i.MX28 is available with an Qualcom-Atheros 802.11 a b g n and BT4.0
interfaces. Wi-Fi data rates up to 150 Mbps (5GHz n-mode) are possible. For variants
without BT a diversity antenna (using the 2 u.FL ports) is utilized for the 2.4GHz band. For
variants with BT a single u.FL antenna connection for both bands is used.
The module is built with coexistence in mind and handles the BT coexistence internally.
Cellular coexistence filtering is onboard to aid in designing systems susceptible to cellular
interference.
A mini access point mode is available in the Wi-Fi with up to 5 clients. This mode is limited
to non DFS channels. The channels available are shown below:
US
and Canada - 2.4 GHz band, 5.8, 5.15-5.25 GHz only
EU
- 2.4 GHz band only
Japan
- 2.4 GHz band only
Embedded Trace Macrocell
The ConnectCard for i.MX28 includes a stand-alone ARM CoreSight Embedded Trace
Macrocell, ETM9CSSingle, which provides a instruction trace and a data trace for the ARM9
microprocessor. This function is available on the same connector as the LCD, and many of
the pins are shared with the LCD controller. This feature is disabled by default. To enable
Embedded Trace Macrocell, external hardware is needed to set LCD_D05 to high during reset
(rever to the i.MX28 boot mode configuration).
Re se t
The reset pin on the module is low asserted. A low pulse will reset the module. There is an
internal pull up resistor to 3.3V, so no external pull up resistor is needed.
Re cov ery and Powe r
The power pin is used to turn the ConnectCard for i.MX28 module on when only the battery
supply is connected. This is done by connecting about 1V to the pin for 100ms.
The power pin is also used to place the module in recovery mode. This is done by placing
3.3V on the pin for more than 5 seconds. The sb_loader can then be used to boot the part
through the USB OTG (USB0) interface.
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Conn ectCor e for i.M X53
NAND FLASH
The ConnectCard for i.MX28 module includes either 128MB or 256MB of NAND FLASH from the
Micron Technologies MT29F series. These chips operate from 1.8V.
DDR2 RAM
The DDR2 RAM on the ConnectCard for i.MX28 module is either 128MB or 256MB from the
Micron Technologies MT47 series.
© 2013 Digi International, Inc..
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About the Development Board
he Development Board for the ConnectCardTfor i.MX28 is set up to allow testing of the
interfaces on the module. These various interfaces are selected by switches, and not all
interfaces are available at the same time.
In addition to the switches there are jumpers, pushbutton switches, potentiometers,
various header connectors, and various connectors to handle the interfaces. All the
required circuitry for the interfaces is included on the development board.
What’s on the Development Board?
Locking
Power
barrel power supply port for 12V wall adapter
switch
Connectors
5V
for Digi 802.3af Power Over Ethernet module (sold separately)
regulated power supply
4.2V
regulated power supply (battery simulator)
3.3V
Regulated power supply to run the dev board and XBee modules
Screw
Terminal blocks for 5V, 4.2V external supplies
2
X Ethernet connections
2
X UART 232 SUB-D 9-pin connectors
1
X DUART 232 SUB-D 9-pin Connector
2
X UART with TTL levels
2
X CAN bus with termination resistors selection and SUB-D 9-pin connections
1
X USB OTG connector
1
X USB Host connector
1
X micro SD card holder
HSADC
header
LRADC
header and potentiometers
SPI
and I2C headers
One
© 2013 Digi International, Inc.
Wire header and EEPROM
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Conn ectCor e™ for i.MX 28™ Ha rdwa re Re fe rence
Audio
18
Interface
Bit Color LCD interface
Boot
mode selection jumpers
ETM
header
JTAG
header
XBee
Through-Hole and SMT sockets
User
Buttons and LEDs
Power
GPIO
3
and Reset buttons
header
X u.FL to RPSMA connectors (2 for the CCi.MX28 module and 1 for XBee antennas)
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Conn ectCor e™ for i.MX 28™ Ha rdwa re Re fe rence
The Development Board
Since some interfaces share a common pin on the ConnectCard for i.MX28 module, and may
be used for multiple interfaces on the development board, conflicts between interfaces are
possible. Tables are included to show which interfaces share resources. Tables in this
section show the position of switches and jumpers. For switches ON/CLOSE indicates the
switch is set to the on position connecting the two sides of the switch, conversely OFF/OPEN
indicates the switch is in the off position disconnecting the two sides of the switch. For
Jumpers SHORT indicates the jumper is installed across the two posts, and OPEN indicates
the jumper is not installed. The functions are shown in rows. To set up a function follow the
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Conn ectCor e™ for i.MX 28™ Ha rdwa re Re fe rence
instructions on the row for that function. If the table has nothing in the box, there is no
conflict with that switch or jumper.
Header Pin Outs
The pin out for the interface headers are shown below.
SSP1 (P85) & SSP3 (P87)
PIN
FUNCTION
VCC_3V3
MOSI
MISO
SCK
SSN
GND
LRADC (0-6) (P8)
AUART2 (P2)
AUART3 (P3)
PIN
FUNCTION
PIN
FUNCTION
PIN
FUNCTION
LRADC0
NC
NC
LRADC1
NC
NC
LRADC2
RX
RX
LRADC3
NC
NC
LRADC4
TX
TX
LRADC5
NC
NC
LRADC6
NC
NC
NC
NC
NC
GND
GND
GND
10
3.3VDC
10
3.3VDC
10
3.3VDC
JTAG (P34)
ETM (J4)
PIN
FUNCTION
PIN
FUNCTION
PIN
FUNCTION
3.3VDC
NC
NC
3.3VDC
NC
NC
TRST
GND
TCLK
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Conn ectCor e™ for i.MX 28™ Ha rdwa re Re fe rence
JTAG (P34)
ETM (J4)
GND
DBGRQ
DBGACK
TDI
NC
10
EXTTRIG
GND
11
NC
12
VTREF
TMS
13
NC
14
VSUPPLY
GND
15
NC
16
DA7
TCK
17
NC
18
DA6
10
GND
19
NC
20
DA5
11
RTCK
21
NC
22
DA4
12
GND
23
DA15
24
DA3
13
TD0
25
DA14
26
DA2
14
GND
27
DA13
28
DA1
15
RESET
29
DA12
30
GND
16
GND
31
DA11
32
GND
17
NC
33
DA10
34
VTREF
18
GND
35
DA9
36
TCTL
19
Pull Down
37
DA8
38
DA0
20
GND
39
GND
40
GND
41
GND
42
GND
43
GND
LCD (P4)
PIN
FUNCTION
PIN
FUNCTION
D16
D17
D12
D13
D14
D15
D16
D17
NC
10
NC
11
NC
12
NC
13
GND
14
GND
15
D10
16
D11
17
D06
18
D07
19
D08
20
D09
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Conn ectCor e™ for i.MX 28™ Ha rdwa re Re fe rence
LCD (P4)
21
D10
22
D11
23
NC
24
NC
25
NC
26
NC
27
GND
28
GND
29
D04
30
D05
31
D00
32
D01
33
D02
34
D03
35
D04
36
D05
37
NC
38
NC
39
NC
40
NC
41
GND
42
GND
43
ENABLE
44
DOTCLK
45
PWM0
46
GND
47
VSYNC
48
HSYNC
49
NC
50
NC
51
NC
52
NC
53
NC
54
NC
55
GND
56
GND
57
SSP1_MOSI
58
SSP1_SCK
59
AUART1_CTS
60
AUART1_RTS
61
I2C1_SDA
62
I2C1_SCL
63
SSP1_SSN
64
SSP1_SCK
65
SSP1_MOSI
66
SSP1_MISO
67
NC
68
Touch Jumper
69
NC
70
NC
71
TOUCH_INTERRUPT
72
GND
73
3.3VDC
74
3.3VDC
75
WALL_12V
76
WALL_12V
77
WALL_12V
78
WALL_12V
79
NC
80
NC
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Development Board Set Up
Power Supplies
The development board includes two 5V, one 4.2V, and one 3.3V regulators. One 5V regulator
is set up to power the module from the 9VDC to 30VDC wall adaptor, the other 5V regulator is
a buck boost regulator to power the USBs. The 4.2V regulator is set up to power the module
through the BATT port. The 3.3V regulator powers both the development board and the XBee
if so equipped. The development board has an ON/OFF switch, SW1. The power switch SW1
can switch both 9V-30VDC input power supply and 12VDC coming out of the optional PoE
module (Digi P/N DG-ACC-POE). However, if a power plug is present on the DC power jack,
PoE is disabled.
The 5V and BATT module supplies can also come from an external jack. For the 5V external
jack the voltage range is 4.75DC to 5.25VCD. For the external BATT supply the allowable
range is 3.4VDC to 4.2VDC. The module will not auto boot from the BATT supply, but will
from the 5V supply. If operating form only the BATT supply the POWER BUTTON will need to
be pressed to turn the module on.
The 3.3V board supply and XBee supply along with the 5V USB supply are powered from either
the 5V or BATT module supplies, with the 5V supply being the primary and the BATT supply
being the secondary supply.
The module can be connected to both the 5V and BATT supply at the same time. When
connected to both supplies the module will draw its power form the 5V supply, as will the
board, USB, and XBee.
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Conn ectCor e™ for i.MX 28™ Ha rdwa re Re fe rence
Power over Ethernet (PoE) - IEEE802.3af
PoE is only available through ENET0 on the development board.
If the wall plug is connected Poe is disabled.
The development board provides two PoE module connectors, P28 and P33, to plug a Digi PoE
module (DG-ACC-POE). The PoE module is an optional accessory item that can be plugged on
the development board through the two connectors.
• P28, input connector: provides access to the PoE signals from the Ethernet
connector
• P33, output connector: provides the output power supply from the PoE module
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Conn ectCor e™ for i.MX 28™ Ha rdwa re Re fe rence
The PoE Module
Plug in the PoE module at a right angle to the development board, as shown in the picture
below.
Note: the PoE module is part of the optional Digi 802.3af application kit (sold separately, Digi
P/N DG-ACC-POE).
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Conn ectCor e™ for i.MX 28™ Ha rdwa re Re fe rence
PoE Connector (power in), P28
The table below provides the pinout of the PoE input connector:
Pin
Signal
Poe_TX_CT
Poe_RX_CT
Poe_RJ45_4/5
Poe_RJ45_7/8
PoE Connector (power out), P33
The table below provides the pinout of the PoE output connector:
Pin
Signal
+12V_PoE
+12V_PoE
GND
GND
Poe_GND
Poe_GND
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Conn ectCor e™ for i.MX 28™ Ha rdwa re Re fe rence
Connector, Switch, and Jumper Locations
© 2013 Digi International, Inc.
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Conn ectCor e™ for i.MX 28™ Ha rdwa re Re fe rence
Power Functions and Settings
9-30VDC, P13 set
Function
J31
J33
SW1
SW21
SW22
P65
P16
P26
P21
5V Regulator,
no XBee
NC
NC
ON
REG
EXT
SHORT
OPEN
OPEN
SHORT
5VRegulator,
with XBee
NC
NC
ON
REG
EXT
SHORT
SHORT
OPEN
SHORT
Battery
Regulator, no
XBee
NC
NC
ON
EXT
REG
SHORT
OPEN
SHORT
OPEN
Battery
Regulator, with
XBee
NC
NC
ON
EXT
REG
SHORT
SHORT
SHORT
OPEN
4.2V and 5V External Terminal Blocks, P13 Open
Function
J31
J33
SW1
SW21
SW22
P65
P16
P26
P21
External 5V, no
XBee
4.755.25VDC
NC
OFF
EXT
EXT
SHORT
OPEN
OPEN
SHORT
External 5V,
with XBee
4.755.25VDC
NC
OFF
EXT
EXT
SHORT
SHORT
OPEN
SHORT
External Battery
no XBee
NC
3.4-4.2VDC
ON
EXT
EXT
SHORT
OPEN
SHORT
OPEN
External Battery
with XBee
NC
3.4-4.2VDC
ON
EXT
EXT
SHORT
SHORT
SHORT
OPEN
5V and BATT supplies can be connected at the same time, however 5V will be selected by the
CCi.MX28 in this case.
The term REG refers to connection to the onboard regulator, and the term EXT refers to
connection to an external supply using the screw terminals. To use the internal regulator
function move the switch (SW21 or SW22) to the REG setting, and the opposite setting (EXT)
to connect the module to an external supply.
Boot Mode
The Boot Mode of the ConnectCard for i.MX28 is set using SW25. Setting the boot mode
requires the 31 connector FFC cable, as five of the LCD lines are used to set the boot mode.
On board logic sets up the boot mode in accordance with the Freescale requirements.
Some LCDs can drive these lines to undesired states. The development board includes
circuitry to prevent the LCD from corrupting the boot mode.
If your final design does not include the video cable, you may still boot from USB using the
recovery button. This is explained in Chapter 3.
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Conn ectCor e™ for i.MX 28™ Ha rdwa re Re fe rence
Switch Location
© 2013 Digi International, Inc.
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Conn ectCor e™ for i.MX 28™ Ha rdwa re Re fe rence
Function and Settings
Boot Mode
SW25 P1
SW25 P2
NAND FLASH
OFF/OPEN
OFF/OPEN
USB
OFF/OPEN
ON/CLOSE
SD
ON/CLOSE
OFF/OPEN
JTAG
ON/CLOSE
ON/CLOSE
Development Board Button Functions
The development board has seven buttons with different functions.
XBEE RESET BUTTON and XBEE COMM BUTTON
These two buttons are for an XBee module. For the XBee button function, consult the XBee
manual.
USER BUTTON1 and USER BUTTON2
The two user buttons are connected to the ConnectCard for i.MX28 modules as GPIOs to
UART2_RTS (module pin 38) and SD_CARDDETECT (module pin 30). User Buttons provide a
high (3.3V) level until pressed, then a low (GND) level is sent.
CCi.MX28 RESET BUTTON
This button resets the module and is red in color. Pressing this button will cause the module
to reboot.
CCi.MX28 POWER BUTTON
This button is used to turn the module on when it is operating from the BATT power supply.
The module will not auto-boot from the battery supply, but will from the 5V supply.
CCi.MX28 RECOVERY BUTTON
This button is used to put the module in recovery mode. In this mode, the SB_LOADER
program can be used to boot the module through the USB OTG (USB0) port.
© 2013 Digi International, Inc.
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Conn ectCor e™ for i.MX 28™ Ha rdwa re Re fe rence
Button Locations
CCIMX28 RESET BUTTON (SW6)
XBEE RESET BUTTON (SW3)
USER BUTTON1 (SW4)
CCIMX28 POWER BUTTON (SW7)
CCIMX28 RECOVERY
BUTTON (SW23)
USER BUTTON2 (SW5)
© 2013 Digi International, Inc.
XBEE COMM BUTTON (SW3)
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Conn ectCor e™ for i.MX 28™ Ha rdwa re Re fe rence
DUART (Console) and I2C0
The normal mode of sending commands and receiving information from the module about
those commands is through the DUART. The DUART is multiplexed with I2C0, and switches
are provided to select the function desired.
The DUART status can be seen in the DUART LEDs located close to SW11.
Connector and Switch Locations
© 2013 Digi International, Inc.
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Conn ectCor e™ for i.MX 28™ Ha rdwa re Re fe rence
Functions and Settings
Function
SW11 P1
SW11 P2
SW29 P1
SW29 P2
DUART_TX
ON/CLOSE
ON/CLOSE
OFF/OPEN
OFF/OPEN
DUART_RX
ON/CLOSE
ON/CLOSE
OFF/OPEN
OFF/OPEN
I2C0_SDA
OFF/OPEN
OFF/OPEN
ON/CLOSE
ON/CLOSE
I1C0_SCL
OFF/OPEN
OFF/OPEN
ON/CLOSE
ON/CLOSE
AUART1, ENET0, LRADC4, LRADC5, and User LEDs
AUART1
AUART1 can be operated with or without flow control, and each of the functions are
connected separately to the D9 connector through switch SW8. The status of AUART 1 can be
seen in the AUART1 LEDs located next to SW8.
ENET0
ETHERNET (ENET0) is wired directly to the module and no switching is required. The LEDs for
ENET0 are operated by GPIOs and are available through switch SW12.
LRADC4 & LRADC5
LRADC4 and LRADC5 are connected to separate potentiometers through switch SW28 and
SW20. When not using the potentiometer, it is best to leave the switch in the OFF/OPEN
condition to avoid having the potentiometer voltage affecting the other signals on the line.
All the LRADCs (0-6) are also available through the LRADC header.
User LEDs
USER_LED1 and USER_LED2 are connected to PWM1, and PWM0 respectively. The LEDs will
turn on with a low and off with a high.
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Conn ectCor e™ for i.MX 28™ Ha rdwa re Re fe rence
Connector and Switch Locations
Function and Settings
Function
SW8
P1
AUART1_TX
ON/
CLOSE
AUART1_RTS
AUART1_RX
AUART1_CTS
© 2013 Digi International, Inc.
SW8
P2
SW8
P3
SW8
P4
SW12
P1
SW12
P2
SW20
P1
SW20
P2
SW28
P1
SW28
P2
OFF/
OPEN
ON/
CLOSE
OFF/
OPEN
ON/
CLOSE
OFF/
OPEN
OFF/
OPEN
ON/
CLOSE
OFF/
OPEN
OFF/
OPEN
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Conn ectCor e™ for i.MX 28™ Ha rdwa re Re fe rence
Function
SW8
P1
SW8
P2
SW8
P3
ENET0_SPEED_LED
ENET0_ACTIVE_LED
SW12
P1
OFF/
OPEN
ON/
CLOSE
OFF/
OPEN
OFF/
OPEN
LRADC5 POT
OFF/
OPEN
© 2013 Digi International, Inc.
SW20
P1
SW20
P2
SW28
P1
SW28
P2
OFF/
OPEN
OFF/
OPEN
OFF/
OPEN
ON/
CLOSE
OFF/
OPEN
OFF/
OPEN
USER_LED2
SW12
P2
ON/
CLOSE
LRADC4 POT
USER_LED1
SW8
P4
ON/
CLOSE
ON/
CLOSE
OFF/
OPEN
ON/
CLOSE
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Conn ectCor e™ for i.MX 28™ Ha rdwa re Re fe rence
AUART4, SSP3, I2S (Audio), LRADC6, and XBee
AUART4
AUART4 can be operated with or without the flow control, and each of the functions are
connected separately to the D9 connector through switch SW9. The status of AUART4 can be
seen in the AUART4 LEDs located next to SW9.
SSP3
SSP3 is connected to its header (P87) through switch SW17.
I2S (Audio)
I2S (AUDIO) connections are made through switch SW14. The CODEC also uses I2C1. The
LRCLK is multiplexed with AUART4_CTS.
LRADC6
LRADC6 is connected to its potentiometer through switch SW28 POS3. When not using the
potentiometer, it is best to leave the switch in the OFF/OPEN condition to avoid having the
potentiometer voltage affecting the other signals on the line. All the LRADCs (0-6) are also
available through the LRADC header.
XBee
XBee connections are made through switch SW19. AUART4 is used to communicate with the
XBee module.
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Conn ectCor e™ for i.MX 28™ Ha rdwa re Re fe rence
Connector and Switch Locations
© 2013 Digi International, Inc.
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Conn ectCor e™ for i.MX 28™ Ha rdwa re Re fe rence
Function and Settings Table - AUART4
Function
AUART4_TX
SW9 / P1
ON/CLOSE
SW9 / P2
AUART4_RTS
AUART4_RX
AUART4_CTS
ON/CLOSE
SW9 / P3
ON/CLOSE
SW9 / P4
SW14 / P1
SW14 / P2
OFF/OPEN
SW17 / P1
OFF/OPEN
SW17 / P2
SW17 / P3
OFF/OPEN
OFF/OPEN
SW17 / P4
OFF/OPEN
SW19 / P1
OFF/OPEN
SW19 / P2
SW19 / P3
OFF/OPEN
OFF/OPEN
SW19 / P4
OFF/OPEN
SW28 / P3
Function and Settings Table - SSP3
Function
SSP3_MOSI
SSP3_MISO
SW9 / P1
SW9 / P2
SSP3_SCK
SSP3_SS0
OFF/OPEN
OFF/OPEN
SW9 / P3
OFF/OPEN
SW9 / P4
OFF/OPEN
SW14 / P1
SW14 / P2
SW17 / P1
OFF/OPEN
ON/CLOSE
SW17 / P2
ON/CLOSE
SW17 / P3
ON/CLOSE
SW17 / P4
ON/CLOSE
SW19 / P1
OFF/OPEN
SW19 / P2
SW19 / P3
© 2013 Digi International, Inc.
OFF/OPEN
OFF/OPEN
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Conn ectCor e™ for i.MX 28™ Ha rdwa re Re fe rence
Function
SSP3_MOSI
SW19 / P4
SSP3_MISO
SSP3_SCK
SSP3_SS0
OFF/OPEN
SW28 / P3
Function and Settings Table - I2S
Function
I2S_SAIF1_DATA0
I2S_SAIF0_MCLK
SW9 / P1
I2S_SAIF0_DATA0
I2S_SAIF0_BITCLK
OFF/OPEN
SW9 / P2
SW9 / P3
OFF/OPEN
SW9 / P4
SW14 / P1
OFF/OPEN
ON/CLOSE
SW14 / P2
ON/CLOSE
SW17 / P1
SW17 / P2
OFF/OPEN
SW17 / P3
OFF/OPEN
SW17 / P4
OFF/OPEN
SW19 / P1
OFF/OPEN
SW19 / P2
SW19 / P3
OFF/OPEN
SW19 / P4
SW28 / P3
OFF/OPEN
OFF/OPEN
Note: I2S (Audio) also uses I2C1
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Conn ectCor e™ for i.MX 28™ Ha rdwa re Re fe rence
Function and Settings Table - XBee
Function
XBEE_RTS
XBEE_DTR
SW9 / P1
XBEE DIN
OFF/OPEN
SW9 / P2
OFF/OPEN
SW9 / P3
SW9 / P4
XBEE DOUT
OFF/OPEN
OFF/OPEN
SW14 / P1
SW14 / P2
OFF/OPEN
SW17 / P1
OFF/OPEN
SW17 / P2
OFF/OPEN
SW17 / P3
OFF/OPEN
SW17 / P4
OFF/OPEN
SW19 / P1
ON/CLOSE
SW19 / P2
ON/CLOSE
SW19 / P3
ON/CLOSE
SW19 / P4
ON/CLOSE
SW28 / P3
Function and Settings Table - LRADC6
Function
LRADC6
SW9 / P1
SW9 / P2
SW9 / P3
SW9 / P4
SW14 / P1
OFF/OPEN
SW14 / P2
SW17 / P1
SW17 / P2
SW17 / P3
SW17 / P4
SW19 / P1
SW19 / P2
SW19 / P3
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Conn ectCor e™ for i.MX 28™ Ha rdwa re Re fe rence
Function
LRADC6
SW19 / P4
SW28 / P3
© 2013 Digi International, Inc.
ON/CLOSE
50
Conn ectCor e™ for i.MX 28™ Ha rdwa re Re fe rence
AUART2 (TTL), AUART3 (TTL), CAN1, ETHERNET (ENET1), and USB Host (USB1)
AUART2 (TTL)
This header needs no switches to operate. The flow control for AUART2 is not connected to
the header (P2).
AUART3
This header is connected to header P3 through switch SW10.
CAN1
The CAN1 header is connected to D9 Header J20 through Switch SW15. A termination resistor
is also available on the development board and is connected through jumper P68.
ETHERNET
The ETHERNET (ENET1) header is connected to the ENET socket J51, using jumpers J5 and J6.
The LEDs for ENET1 are available through GPIOs using SW13.
USB HOST (USB1)
For modules without ENET1, USB1 is available and is connected to the USB socket J2 using
jumpers J5 and J6.
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Conn ectCor e for i.M X53
Connector, Switch, and Jumper Locations
Variants with ENET1 do not have USB1 and variants with USB1 do not have ENET1.
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Conn ectCor e for i.M X53
Function and Settings Table - AUART3
Function
AUART3_RX
SW10 / P1
ON/CLOSE
AUART3_TX
SW10 / P2
ON/CLOSE
SW13 / P1
OFF/OPEN
SW13 / P2
OFF/OPEN
SW15 / P1
OFF/OPEN
SW15 / P2
OFF/OPEN
P68
J5 / ETH1
J5 / USB1
J6 / ETH1
J6 / USB1
Function and Settings Table - CAN1
Function
CAN1_RX
SW10 / P1
OFF/OPEN
CAN1_TX
SW10 / P2
OFF/OPEN
SW13 / P1
OFF/OPEN
SW13 / P2
OFF/OPEN
SW15 / P1
ON/CLOSE
SW15 / P2
CAN1_TERMINATION
ON/CLOSE
P68
SHORT
J5 / ETH1
J5 / USB1
J6 / ETH1
J6 / USB1
Function and Settings Table - ENET1
Function
ENET1_SPEED_LED
SW10 / P1
OFF/OPEN
SW10 / P2
SW13 / P1
© 2013 Digi International, Inc..
ENET1_ACTIVE_LED
ENET1_RX+
ENET1_RX-
OFF/OPEN
ON/CLOSE
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Conn ectCor e for i.M X53
Function
ENET1_SPEED_LED
SW13 / P2
SW15 / P1
ENET1_ACTIVE_LED
ENET1_RX+
ENET1_RX-
ON/CLOSE
OFF/OPEN
SW15 / P2
OFF/OPEN
P68
J5 / ETH1
SHORT
J5 / USB1
OPEN
J6 / ETH1
SHORT
J6 / USB1
OPEN
Function and Settings Table - USB1
Function
USB1_DM
USB1_DP
SW10 / P1
SW10 / P2
SW13 / P1
SW13 / P2
SW15 / P1
SW15 / P2
P68
J5 / ETH1
OPEN
J5 / USB1
SHORT
J6 / ETH1
OPEN
J6 / USB1
SHORT
AUART2 has no switches to set. If the CAN1 Termination is not needed, P68 can be left OPEN.
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Conn ectCor e for i.M X53
SD CARD, SSP1, LRADC0, LRADC1, LRADC2, and LRADC3
SD CARD
The SD CARD socket P1 requires not switches to operate.
SSP1
SSP1 or SPI1 is connected to header P85 through switch SW16.
LRADC0, LRADC1, LRADC2 and LRADC3
LRADC0, LRADC1, LRADC2 and LRADC3 are connected to their associated potentiometers
through switch SW27. These functions are also available on Header P8.
Connector, Switch, and Jumper Locations
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Conn ectCor e for i.M X53
Function and Settings Table - SSP1
Function
SSP1_MOSI
SW16 / P1
ON/CLOSE
SW16 / P2
SSP1_MISO
SSP1_SCK
SSP1_SSN
ON/CLOSE
SW16 / P3
ON/CLOSE
SW16 / P4
ON/CLOSE
SW27 / P1
OFF/OPEN
SW27 / P2
OFF/OPEN
SW27 / P3
OFF/OPEN
SW27 / P4
OFF/OPEN
Function and Settings Table - LRADC0-3
Function
LRADC0 POT
LRADC1 POT
LRADC2 POT
LRADC3 POT
SW16 / P1
SW16 / P2
OFF/OPEN
SW16 / P3
OFF/OPEN
SW16 / P4
OFF/OPEN
SW27 / P1
ON/CLOSE
SW27 / P2
SW27 / P3
SW27 / P4
© 2013 Digi International, Inc..
OFF/OPEN
ON/CLOSE
ON/CLOSE
ON/CLOSE
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Conn ectCor e for i.M X53
CAN0, HSADC, AND1-Wire
CAN0
CAN0_RX is connected to D9 header J19 through jumper P38. No switch is needed for
CAN0_TX. The termination resistor is available on jumper P67
HSADC
The HSADC header (J21) is not populated on the development board.
1-Wire
1-Wire requires no switch to operate. An onboard 1-Wire EEPROM is provided for testing.
The EEPROM is connected to the 1-Wire interface using SW24 pos 1.
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Conn ectCor e for i.M X53
Connector, Switch, and Jumper Locations
Function and Settings Table
Function
1-WIRE
EEPROM
SW24 / P1
ON/CLOSE
P38
CAN0_RX
CAN0_TERMINATION
ON/CLOSE
P67
HS
ADC_TRIGGER
OFF/OPEN
ON/CLOSE
1-Wire Header has no switches
CAN0_TX has no switches
HSADC0 Header is not populated
SW24 P2 is not connected
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Conn ectCor e for i.M X53
LCD, ETM, JTAG, USB OTG (USB0)
The locations of the LCD, ETM, JTAG and USB OTG (USB0) are shown below.
The USB OTG (USB0) can be operated with or without the OTG functionality. The USB0_ID
line is connected to the socket (J7) through jumper P39. A short to GND of the USB0_ID line
is available on jumper P37.
To operate the LCD, ETM and JTAG the 31 pin LCD cable must be connected from the
development board to the module.
Connector and Jumper Locations
Functions and Settings
LCD has no switches. To operate the touch screen OPEN P66.
JTAG has no switches
ETM has no switches
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Conn ectCor e for i.M X53
LCD JTAG ETM ZIF connector is for the FFC 31 pin cable connecting these interfaces to the
CCi.MX28
© 2013 Digi International, Inc..
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Certifications
Agency Certifications
United States FCC
The ConnectCard™ for i.MX28 Module complies with Part 15 of the FCC rules and
regulations. Compliance with the labeling requirements, FCC notices and antenna usage
guidelines is required.
To fulfill FCC Certification, the OEM must comply with the following regulations:

The system integrator must ensure that the text on back side of the module is placed
on the outside of the final product.

ConnectCard™ for i.MX28 RF Module may only be used with antennas that have been
tested and approved for use with this module [refer to the antenna tables in this
section].
O E M L a b e li n g Re q ui r e me n ts
WARNING: The Original Equipment Manufacturer (OEM) must ensure that FCC labeling
requirements are met. This includes a clearly visible label on the outside of the final product
enclosure that displays the contents shown in the figure below.
Required FCC Label for OEM products containing the ConnectCard™ for i.MX28 RF Module:
FC C Notic e s
IMPORTANT: The ConnectCard™ for i.MX28 RF Module has been certified by the FCC for use
with other products without any further certification (as per FCC section 2.1091).
Modifications not expressly approved by Digi could void the user's authority to operate the
equipment.
IMPORTANT: OEMs must test final product to comply with unintentional radiators (FCC
section 15.107 & 15.109) before declaring compliance of their final product to Part 15 of
the FCC Rules.
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Conn ectCor e™ for i.MX 28™ Ha rdwa re Re fe rence
IMPORTANT: The ConnectCard™ for i.MX28 RF module has been certified for remote and base
radio applications. If the module will be used for portable applications, the device must
undergo SAR testing.
This equipment has been tested and found to comply with the limits for a Class B digital
device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable
protection against harmful interference in a residential installation. This equipment
generates uses and can radiate radio frequency energy, and if not installed and used in
accordance with the instructions, may cause harmful interference to radio communications.
However, there is no guarantee that interference will not occur in a particular installation.
If this equipment does cause harmful interference to radio or television reception, which can
be determined by turning the equipment off and on, the user is encouraged to try to correct
the interference by one or more of the following measures: Re-orient or relocate the
receiving antenna, Increase the separation between the equipment and receiver, Connect
equipment and receiver to outlets on different circuits, or Consult the dealer or an
experienced radio/TV technician for help.
FCC-Approved Antennas
The ConnectCard™ for i.MX28 can be installed utilizing antennas and cables constructed with
non-standard connectors (RPSMA, RPTNC, etc.).
The modules are FCC approved for fixed base station and mobile applications for the
channels indicated in the tables below. If the antenna is mounted at least 20cm (8 in.) from
nearby persons, the application is considered a mobile application. Antennas not listed in the
table must be tested to comply with FCC Section 15.203 (Unique Antenna Connectors) and
Section 15.247 (Emissions).
ConnectCard™ for i.MX28: ConnectCard™ for i.MX28 RF Modules have been tested and
approved for use with all the antennas listed in the tables below. (Cable-loss is required
when using gain antennas as shown below.)
The antennas in the tables below have been approved for use with this module. Digi does not
carry all of these antenna variants. Contact Digi Sales for available antennas.
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Conn ectCor e for i.M X28 Hardwa re Refere nce
Antennas Approved for Use with the ConnectCard™ for i.MX28 Wi-Fi Modules
OMNI-DIRECTIONAL ANTENNAS
Part Number
Type
(Description)
Peak Gain
Application
A24-HASM-450
Dipole
(articulated RPSMA, 2.4GHz antenna)
1.8dBi
Fixed/Mobile
29000146
Dipole
(articulated RPSMA, 2.4GHz and 5GHz
antenna)
5dBi
Fixed/Mobile
Taoglas PC.11.07.0100A
The Stripe Omni-directional antenna
3dBi 2
2.4GHz
Fixed/Mobile
Cable loss/
Attenuation
required
4.5dBi @
5GHz
Taoglas
FXP.830.07.0100C
Dipole
2.6dBi @
2.4GHz
Fixed/Mobile
5dBi @
5GHz
Note:
* If using the RF module in a portable application (for example - if the module is used in a handheld device and the antenna is less than
20cm from the human body when the device is in operation): The integrator is responsible for passing additional SAR (Specific
Absorption Rate) testing based on FCC rules 2.1091 and FCC Guidelines for Human Exposure to Radio Frequency Electromagnetic
Fields, OET Bulletin and Supplement C. The testing results will be submitted to the FCC for approval prior to selling the integrated
unit. The required SAR testing measures emissions from the module and how they affect the person.
RF Exposure
The preceding statement must be included as a CAUTION statement in OEM product manuals
in order to alert users of FCC RF Exposure compliance.
Europe (ETSI)
The ConnectCard™ for i.MX28 Module has been certified for use in several European
countries. For a complete list, refer to www.digi.com
If the ConnectCard™ for i.MX28 RF Modules are incorporated into a product, the
manufacturer must ensure compliance of the final product to the European harmonized EMC
© 2013 Digi International, Inc..
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Conn ectCor e for i.M X28 Hardwa re Refere nce
and low-voltage/safety standards. A Declaration of Conformity must be issued for each of
these standards and kept on file as described in Annex II of the R&TTE Directive.
Furthermore, the manufacturer must maintain a copy of the ConnectCard™ for i.MX28
Hardware Reference manual documentation and ensure the final product does not exceed
the specified power ratings, antenna specifications, and/or installation requirements as
specified in the user manual. If any of these specifications are exceeded in the final product,
a submission must be made to a notified body for compliance testing to all required
standards.
OEM Lebeling Requirements
The ‘CE’ marking must be affixed to a visible location on the OEM product.
CE Labe ling R e qu i re m e n t s
The CE mark shall consist of the initials "CE" taking the following form:
• If the CE marking is reduced or enlarged, the proportions given in the above
graduated drawing must be respected.
• The CE marking must have a height of at least 5mm except where this is not
possible on account of the nature of the apparatus.
• The CE marking must be affixed visibly, legibly, and indelibly.
Restrictions
Declarations of Conformity
Digi has issued Declarations of Conformity for the ConnectCard™ for i.MX28 RF Modules
concerning emissions, EMC and safety. Files can be obtained by contacting Digi Support.
Important Note:
Digi does not list the entire set of standards that must be met for each country. Digi
customers assume full responsibility for learning and meeting the required guidelines for
each country in their distribution market. For more information relating to European
compliance of an OEM product incorporating the ConnectCard™ for i.MX28 RF Module,
contact Digi, or refer to the following web sites:
© 2013 Digi International, Inc..
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Conn ectCor e for i.M X28 Hardwa re Refere nce
• CEPT ERC 70-03E - Technical Requirements, European restrictions and general
requirements: Available at www.ero.dk/.
• R&TTE Directive - Equipment requirements, placement on market: Available at
www.ero.dk/.
Approved Antennas
The same antennas have been approved for Europe as stated in the FCC table for use with
the ConnectCard™ for i.MX28 Module.
Canada (IC)
This device complies with Industry Canada license-exempt RSS standard(s). Operation is
subject to the following two conditions: (1) this device may not cause interference, and (2)
this device must accept any interference, including interference that may cause undesired
operation of the device.
Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio
exempts de licence. L'exploitation est autorisée aux deux conditions suivantes : (1)
l'appareil ne doit pas produire de brouillage, et (2) l'utilisateur de l'appareil doit accepter
tout brouillage radioélectrique subi, même si le brouillage est susceptible d'en
compromettre le fonctionnement.
Labeling Requirements
Labeling requirements for Industry Canada are similar to those of the FCC. A clearly visible
label on the outside of the final product enclosure must display the following text:
Contains Model ConnectCard™ for i.MX28 Radio, IC: 1846A-CCi.MX28
The integrator is responsible for its product to comply with IC ICES-003 & FCC Part 15, Sub. B
- Unintentional Radiators. ICES-003 is the same as FCC Part 15 Sub. B and Industry Canada
accepts FCC test report or CISPR 22 test report for compliance with ICES-003.
Transmitters with Detachable Antennas
This radio transmitter (IC: 1846A-CCi.MX28) has been approved by Industry Canada to
operate with the antenna types listed in the table above with the maximum permissible gain
and required antenna impedance for each antenna type indicated. Antenna types not
included in this list, having a gain greater than the maximum gain indicated for that type, are
strictly prohibited for use with this device.
Le présent émetteur radio (IC: 1846A-CCi.MX28) a été approuvé par Industrie Canada pour
fonctionner avec les types d'antenne énumérés ci-dessous et ayant un gain admissible
maximal et l'impédance requise pour chaque type d'antenne. Les types d'antenne non inclus
dans cette liste, ou dont le gain est supérieur au gain maximal indiqué, sont strictement
interdits pour l'exploitation de l'émetteur.
© 2013 Digi International, Inc..
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Conn ectCor e for i.M X28 Hardwa re Refere nce
Detachable Antenna
Under Industry Canada regulations, this radio transmitter may only operate using an antenna
of a type and maximum (or lesser) gain approved for the transmitter by Industry Canada. To
reduce potential radio interference to other users, the antenna type and its gain should be so
chosen that the equivalent isotropically radiated power (e.i.r.p.) is not more than that
necessary for successful communication.
Conformément à la réglementation d'Industrie Canada, le présent émetteur radio peut
fonctionner avec une antenne d'un type et d'un gain maximal (ou inférieur) approuvé pour
l'émetteur par Industrie Canada. Dans le but de réduire les risques de brouillage
radioélectrique à l'intention des autres utilisateurs, il faut choisir le type d'antenne et son
gain de sorte que la puissance isotrope rayonnée équivalente (p.i.r.e.) ne dépasse pas
l'intensité nécessaire à l'établissement d'une communication satisfaisante.
Australia (C-Tick)
These modules comply with requirements to be used in end products in Australia. All
products with EMC and radio communications must have a registered C-Tick mark.
Registration to use the compliance mark will only be accepted from Australian manufacturers
or importers, or their agent, in Australia.
In order to have a C-Tick mark on an end product, a company must comply with a or b below.
ahave a company presence in Australia.
bhave a company/distributor/agent in Australia that will sponsor the importing of the
end product.
Contact Digi for questions related to locating a contact in Australia.
© 2013 Digi International, Inc..
66
Module Specifications
Mechanical Specifications
Dimensional Drawing
Environmental Specifications

Operating temperature:
-40ºC to +85ºC*

Storage temperature:
-40ºC to +125ºC
*Operating temperatures above 65ºC may require additional thermal management
considerations as part of the module integration. See the Thermal Considerations section
in this document for details.
© 2013 Digi International, Inc.
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Conn ectCor e™ for i.MX 28 Ha rdwa re Referen ce
Network Interface
Digi part number A24-HASM-450
Ante nna At tr ibut es
Specification
Attribute
Frequency Range
2.4 - 2.5 GHz
Gain
1.8dBi
VSWR
2.0 Max
Connector
Reverse Male SMA (RPSMA)
Impedance
50 Ω
Temperature
RP-SMA
Gain
-20ºC to +80ºC
Return Loss
-9.5dB
Weight
27g
Dimensions
10.6 x 87.4 mm
D i m e n s i on s
Note: Dimensions are provided for reference purposes only. The actual antenna may vary.
© 2013 Digi International, Inc.
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Conn ectCor e™ for i.MX 28 Ha rdwa re Referen ce
Digi part number 29000146
Ante nna At tr ibut es
Specification
Attribute
Frequency Range
2.4 - 2.5 GHz, 5.15 - 5.825 GHz
Gain
5 dBi Max
VSWR
1.9 Typical
Connector
Reverse Male SMA (RPSMA)
Impedance
50 Ω
Temperature Rating
-20°C to +80° C
Dimensions
104.9 x 11 mm
D i m e n s i on s
Note: Dimensions are provided for reference purposes only. The actual antenna may vary.
© 2013 Digi International, Inc.
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Conn ectCor e™ for i.MX 28 Ha rdwa re Referen ce
VSWR Chart
Taoglas PC.11.07.0100A
Ante nna At tr ibut es
Specification
2.4 GHzAttribute
5GHz Attribute
Frequency Range
2.4 - 2.5 GHz
4.9 - 5.9 GHz
Peak Gain
3 dBi
4.5 dBi
Average Gain (on plastic)
-0.6 dBi
-0.5 dBi
VSWR
1.5
Connector
u.FL
Impedance
50 Ω
Temperature
-40°C to +85° C
Dimensions
66 x 15 mm (excluding cable)
© 2013 Digi International, Inc.
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Conn ectCor e™ for i.MX 28 Ha rdwa re Referen ce
D i m e n s i on s
Note: Dimensions are provided for reference purposes only. The actual antenna may vary.
© 2013 Digi International, Inc.
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Conn ectCor e™ for i.MX 28 Ha rdwa re Referen ce
Taoglas FXP.830.07.0100C
Ante nna At tr ibut es
Specification
2.4 GHzAttribute
5GHz Attribute
Frequency Range
2.4 - 2.5 GHz
4.9 - 5.9 GHz
Peak Gain (free space)
1.8 dBi
3.6 dBi
Peak Gain (on plastic)
2.6 dBi
5.0 dBi
Average Gain (free space)
-3.0 dBi
-0.6 dBi
Average Gain (on plastic)
-3.0 dBi
-0.7 dBi
VSWR (free space, on plastic
See chart below
Connector
u.FL
Impedance
50 Ω
Temperature
-40°C to +85° C
Dimensions
42 x 7 mm (excluding cable)
VSWR Chart
© 2013 Digi International, Inc.
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Conn ectCor e™ for i.MX 28 Ha rdwa re Referen ce
D imen sio ns
Note: Dimensions are provided for reference purposes only. The actual antenna may vary.
© 2013 Digi International, Inc.
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Conn ectCor e™ for i.MX 28 Ha rdwa re Referen ce
Ethernet 1

Standard:
IEEE802.3

Physical layer:
10/100Base

Data rate:
10/100 Mbps
Ethernet 2

Standard:
IEEE802.3

Physical layer:
10/100Base

Data rate:
10/100 Mbps
WLAN
Stan dar d
IEEE
802.11a/b/g/n standards
HT20,
and HT40 IEEE 802.11n
Frequency Band
2.40
- 2.50 GHz ( Low Band )
5.18
- 5.825 GHz ( High Band )
Data Rates
802.11b:
1, 2, 5.5, 11 Mbps
802.11a/g:
6, 9, 12, 18, 24, 35, 48, 54 Mbps
802.11n
HT20 FGI:
6.5, 13, 19.5, 26, 39, 52, 58.5, 65 Mbps
802.11n
HT20 HGI:
7.2, 14.4, 21.7, 29.9, 43.3, 57.8, 65, 72.2 Mbps
802.11n
HT40 FGI (5GHz only): 13.5, 27, 40.5, 54, 81, 108, 121.5, 135 Mbps
802.11n
HT40 HGI (5GHz only): 15, 30, 45, 60, 90, 120, 135, 150 Mbps
© 2013 Digi International, Inc.
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Conn ectCor e™ for i.MX 28 Ha rdwa re Referen ce
Modulati on
Mode
Data
Rate
Modulation
Mode
Data
Rate
Modulation
Mode
Data
Rate
Modulation
802.11b
DBPSK
802.11g
BPSK
802.11a
BPSK
DQPSK
BPSK
BPSK
5.5
CCK
12
QPSK
12
QPSK
11
CCK
18
QPSK
18
QPSK
24
16-QAM
24
16-QAM
35
16-QAM
35
16-QAM
48
64-QAM
48
64-QAM
54
64-QAM
54
64-QAM
Mode
MCS
Modulation
802.11n
Data Rate
HT20 (2.4GHz and 5GHz)
HT40 (5GHz only)
FGI
HGI
FGI
HGI
MCS0
BPSK
6.5
7.2
13.5
15
MCS1
QPSK
13
14.4
27
30
MCS2
QPSK
19.5
21.7
40.5
45
MCS3
16-QAM
26
29.9
54
60
MCS4
16-QAM
39
43.3
81
90
MCS5
64-QAM
52
57.8
108
120
MCS6
64-QAM
58.5
65
121.5
135
MCS7
64-QAM
65
72.2
135
150
Securi ty
Cisco
CCXv4 ASD
WAPI
(for China)
WPS
WEP
WPA
WPA2
© 2013 Digi International, Inc.
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Conn ectCor e™ for i.MX 28 Ha rdwa re Referen ce
Frequency Bands
US, Canda
2.412
to 2.462 GHz; 11 channels
5.180
to 5.320 GHz; 8 channels
5.500
to 5.700 GHz, 8 channels (excludes 5.600 to 5.650 GHz)
5.745
to 5.825 GHz; 5 channels
Europe
2.412
to 2.472 GHz; 13 channels
5.180
to 5.320 GHz; 8 channels
5.500
to 5.700 GHz, 8 channels (excludes 5.600 to 5.640 GHz)
Australia, New Zealand
2.412
to 2.462 GHz; 11 channels
5.180
to 5.320 GHz; 8 channels
5.745
to 5.825 GHz; 5 channels
Japan
2.412
to 2.472 GHz; 13 channels
5.180
to 5.320 GHz; 8 channels
5.500
to 5.700 GHz; 11 channels
© 2013 Digi International, Inc.
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Conn ectCor e™ for i.MX 28 Ha rdwa re Referen ce
5G Hz H T 20 AND HT40 Ch annels Avai lable
Channel
Number
Frequency
Mode
Secondary Channel Allowed
36
2180
HT40
PLUS
38
5190
HT20
40
5200
HT40
MINUS
44
5220
HT40
PLUS
46
5230
HT20
48
5240
HT40
MINUS
52
5260
HT40
PLUS
54
5270
HT20
56
5280
HT40
MINUS
60
5300
HT40
PLUS
62
5310
HT20
64
5320
HT40
MINUS
100
5500
HT40
PLUS
102
5510
HT20
104
5520
HT40
MINUS
108
5540
HT40
PLUS
110
5550
HT20
112
5560
HT40
MINUS
116
5580
HT40
PLUS
118
5590
HT20
120
5600
HT40
MINUS
124
5620
HT40
PLUS
126
5630
HT20
128
5640
HT40
MINUS
132
5660
HT40
PLUS
134
5670
HT20
136
5680
HT40
140
5700
HT20
149
5745
HT40
151
5755
HT20
153
5765
HT40
© 2013 Digi International, Inc.
MINUS
PLUS
MINUS
77
Conn ectCor e™ for i.MX 28 Ha rdwa re Referen ce
Channel
Number
Frequency
Mode
Secondary Channel Allowed
157
5785
HT40
PLUS
159
5795
HT20
161
5805
HT40
165
5825
HT20
MINUS
Receive Sensitivity
Network Type
Sensitivity
802.11 b
-88 dBm
802.11 g
-88 dBm
802.11 n (2.4 GHz)
-89 dBm
802.11 a
-90 dBm
802.11 n (5 GHz, 20 MHz Bandwidth)
-90 dBm
802.11 n (5 GHz, 40 MHz Bandwidth)
-86 dBm
Electrical Characteristics
Absolute Maximum Ratings
Parameter
Min
Max
Unit
VDD_5V
-0.3
5.25
Battery
-0.3
4.242
Pswitch
-0.3
Battery/2
USB DP and DN
-0.3
3.63
GPIO
-0.3
3.6
Ethernet TX +/- and RX +/-
-0.5
Note that other nterfaces not specifically mentioned are the same as GPIOs.
© 2013 Digi International, Inc.
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Conn ectCor e™ for i.MX 28 Ha rdwa re Referen ce
Voltage Supplies
Parameter
Min
Typ
Max
Unit
5V Supply
4.75
5.25
Battery Supply
3.4
4.2
Supply Current
Settings
Supply Current
Wi-Fi 2.4 GHz Transmit, CPU 545 MHz, 50%,
UART active
475 mA
Wi-Fi 5 GHz Transmit, CPU 545 MHz, 50%,
UART active
600 mA
Wi-Fi 5 GHz Recieve CPU Idle (Auto Slow)
300 mA
Wi-Fi 2.4 GHz Recieve CPU Idle (Auto Slow)
325 mA
Transmit Power
Network Type
Transmit Power
802.11 b
10.5 dBm
802.11 g/n
11 dBm
802.11 a/n
13 dBm
GPIO DC Parameters
Parameter
Min
Max
Unit
Input Voltage high (DC)
3.3
Input Voltage low (DC)
0.8
Output Voltage high (DC)
4.64
Output Voltage low (DC)
0.4
4mA setting
3.8
6.8
mA
8mA setting
7.6
13.6
mA
12mA setting
12.1
24.5
mA
4mA setting
8.1
mA
8mA setting
8.1
16.4
mA
12mA setting
12.1
24.5
mA
Output Source Current (DC) gpio, gpio_f and gpio_nobs
Output Sink Current (DC) gpio, gpio_f, and gpio_nobs
© 2013 Digi International, Inc.
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Conn ectCor e™ for i.MX 28 Ha rdwa re Referen ce
Parameter
Min
Max
Unit
8mA setting
7.6
13.6
mA
16mA setting
15.2
27.2
mA
8mA setting
8.1
15.4
mA
16mA setting
16.2
30.6
mA
10k pull-up resistance
12
kΩ
47k pull-up resistance
39
56
kΩ
Output Source Current (DC) gpio_clk
Output Sink Current (DC) gpio_clk
See the Freescale i.MX28 data sheet and manual for full details.
Agency Approvals
Specification
ConnectCard™ for i.MX28
United States (FCC Part 15.247)
FCC ID: MCQ-CCIMX28
Industry Canada (IC)
IC: 1846A-CCIMX28
Europe (DC)
ETSI
Australia
Pending
Japan
Pending
UR
Pending
VCCI
Pending
© 2013 Digi International, Inc.
80
Module Dimensions
© 2013 Digi International, Inc.
81
Change Log
he following changes were made to this document in the revisions listed below.
Revision 0.1
Creation.
Revision 0.2
Correction
© 2013 Digi International, Inc.
of FCC and IC approval IDs.
82

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Modify Date                     : 2013:04:24 09:14:09-05:00
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FCC ID Filing: MCQ-CCIMX28

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