u blox WIBEAR-SF-STA The Lesswire industrial universal 802.11b/g WLAN + Bluetooth 2.1 module is targeted for integration into different products of OEM partners enabling them to communicate over WLAN and Bluetooth connection User Manual WiBear SF DS v1 03

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Document Description	15_WIBEAR-SF UserMan_v1.03
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WiBear-SF
IEEE 802.11b/g WLAN and Bluetooth 3.0+EDR Module
Data Sheet
Preliminary Version 1.03
March 2012
The information in this document is subject to change without notice. Please download latest version from www.lesswire.com
Copyright © 2010 lesswire AG
www.lesswire.com
WiBear-SF Data Sheet
Version 1.03
Introduction
The WiBear-SF industrial universal module is
targeted for integration into different OEM
products solution enabling them to communicate
over WLAN and Bluetooth connection. Module
supports IEEE 802.11b/g WLAN station (client),
micro access point, Bluetooth 3.0 + HS, and
Bluetooth 2.1 + EDR operation modes. It
provides a complete end-to-end solution for lowpower applications. It includes an integrated
MAC/Baseband processor and RF front-end
components and can connect to a host processor
through SDIO/SPI and high-speed UART
interfaces. The WiBear-SF modules are offered
in two versions (see ordering information). Host
drivers for common operating systems such as
Linux, Android, and Windows Mobile are
available. The modules for Europe (CE) and US
(FCC) are radio type approved.
Figure 1: Physical outlook
Applications
• WLAN and Bluetooth networks
• Access to laptops, mobile phones etc.
• Automotive and industrial networking
• Home / building automation
Key Features
• Standards: IEEE 802.11b/g/e/i/h
• WLAN 802.11b/g station and micro access point operation (up to 8 clients supported)
• Bluetooth 3.0 + HS (Highspeed)
• Bluetooth 2.1 + EDR (backward compatibility)
• Background scan mode
• Wide temperature operation range -40ºC to +85ºC
• Unified 20mm x 20mm footprint, surface mounting
• SDIO/G-SPI and high speed UART interfaces
• Support for low power modes
• CE/FCC/IC compliant
Ordering Information
Table 1: Ordering information
Order Number
AN00K73534
AN00K73535
AN00K77232
Part Number
WiBear-SF1
WiBear-SF2
WiBear-SF1_EK_Mini
AN00K77233
WiBear-SF2_EK_Mini
Copyright © 2010 lesswire AG
Description
WiBear-SF1 Module, industrial temperature range
WiBear-SF2 Module, industrial temperature range
Evaluation Kit with WiBear-SF1 Module, industrial temperature
range
Evaluation Kit with WiBear-SF2 Module, industrial temperature
range
www.lesswire.com
Page 2 of 22
WiBear-SF Data Sheet
Version 1.03
Product Variants
Product Variants
Table 2: Product variants
Product Name
WiBear-SF1
WiBear-SF2
Description
Module has one joint antenna connector for WLAN and Bluetooth operation (see block
diagram). Overall performance (throughput) in micro Access Point (µAP) mode with
simultaneous Bluetooth traffic is less than WiBear-SF2. May be recommended for cost
effective µAP solution, µAP without or rare Bluetooth traffic or cost effective station with
one system antenna. See table below for performance comparison.
Module has separated antenna connectors for WLAN and Bluetooth operation (see block
diagram). Overall performance (throughput) is maximized for µAP mode with simultaneous
Bluetooth traffic. Required two system antennas (one for WLAN and one for Bluetooth)
with isolation between antennas 30 dB or better (orthogonal oriented antennas with
distance between more than 50F60 mm.) May be recommended for higher performance
of µAP.
Performance Comparison
Table 3: WLAN throughput in µAP mode
Module
WiBear-SF1 or WiBear-SF2
WiBear-SF2 (Dual antenna)
WiBear-SF1 (Single antenna)
Mode
TCP traffic, without Bluetooth
TCP traffic + one Bluetooth SCO connection
TCP traffic + one Bluetooth SCO connection
Net Throughput
20 Mbps
18 Mbps
13 Mbps
Note: Only one station (client) and one AP used in this test. Table shows near the maximum reached typical
performance, real performance depend on host processor and system optimization level.
Note: Performance strongly depends from host controller. Recommended host controller performance
corresponds to an ARM9 running with 400MHz to make available the net throughput as shown in Table 3
Note: For maximizing of WiBear-SF2 performance in µAP mode during simultaneous operation of WLAN and
Bluetooth, Bluetooth Coexistence Arbiter (BCA) should be disabled by host software.
Copyright © 2010 lesswire AG
www.lesswire.com
Page 3 of 22
WiBear-SF Data Sheet
Version 1.03
Block Diagram
WiBear-SF1
WLAN TX
SDIO/GSPI
GPIOs
BPF
WLAN AND
BLUETOOTH
ANTENNA
(ANT1)
BPF
WLAN RX
RF
FRONT
END
WLAN
ANTENNA
(ANT1)
BT TX/RX
BALUN
BPF
BLUETOOTH
ANTENNA
(ANT2)
WLAN RX
RF
FRONT
END
BT TX/RX
BALUN
802.11b/g MAC/BB/RADIO
AND
BLUETOOTH 3.0HS+EDR
BLUETOOTH
COEX.
RESET
SHDN
3.3V
1.8V
EEPROM
VIO
26.0 MHz
CRYSTAL
OSC
Figure 2: Block diagram of WiBear-SF1
WiBear-SF2
WLAN TX
SDIO/GSPI
GPIOs
BLUETOOTH
COEX.
802.11b/g MAC/BB/RADIO
AND
BLUETOOTH 3.0HS+EDR
RESET
SHDN
3.3V
1.8V
VIO
EEPROM
26.0 MHz
CRYSTAL
OSC
Figure3: Block diagram of WiBear-SF2
Copyright © 2010 lesswire AG
www.lesswire.com
Page 4 of 22
WiBear-SF Data Sheet
Version 1.03
42
43
44
45
27
GPIO_0
28
GPIO_1
29
GPIO_9
30
GPIO_10
31
GPIO_11
32
GPIO_12
33
GPIO_13
34
GPIO_14
35
GPIO_15
36
BT_FREQ
37
38
ANT2
BT_PRIORITY
41
GND
BT_STATE
40
WL_ACTIVE
39
Pin Description
GND
CF_RESET
GND
CF_INPACKn
GND
GPIO_17
ANT1
GPIO_16
GND
GPIO_5
Wi B e a r - S F
GPIO_4
GPIO_3
GPIO_8
GPIO_7
GPIO_6
GPIO_2
25
24
23
22
21
20
19
18
17
16
15
GND
14
13
GND
1V8
11
12
VIO
10
3V3
PDn
RESETn
SD_D1
SD_D0
SD_CLK
SD_D3
SD_CMD
SD_D2
SLEEP_CLK
26
Figure 4: Module pinout
Table 4: Pin description
Pin
No.
Pin Name
SD_D2
I/O
SD_D3
I/O
SD_CMD
I/O
SD_CLK
Copyright © 2010 lesswire AG
Pin Type
Description
SDIO 4-bit: Data line bit [2] or Read Wait (optional)
SDIO 1-bit: Read Wait (optional)
SDIO-SPI: Reserved
G-SPI: Interrupt output (active low)
SDIO 4-bit: Data line bit [3]
SDIO 1-bit: Reserved
SDIO-SPI: Chip select (active low)
G-SPI: Clock request
SDIO 4-bit: Command/Response
SDIO 1-bit: Command line
SDIO-SPI: Data input
G-SPI: Data input
SDIO 4-bit: Clock input
SDIO 1-bit: Clock input
SDIO-SPI: Clock input
G-SPI: Clock input
www.lesswire.com
Page 5 of 22
WiBear-SF Data Sheet
Version 1.03
SD_D0
I/O
SD_D1
I/O
RESETn
10
11
12
13
14
PDn
3V3
VIO
1V8
GND
GND
SLEEP_CLK
Power
Power
Power
Ground
Ground
15
16
17
18
19
GPIO_2
GPIO_6
GPIO_7
GPIO_8
GPIO_3
I/O
I/O
I/O
I/O
I/O
20
21
GPIO_4
GPIO_5
I/O
I/O
22
GPIO_16
I/O
23
GPIO_17
I/O
24
25
CF_INPACKn
CF_RESET
26
27
28
GND
GPIO_0
GPIO_1
Ground
I/O
I/O
29
30
31
32
33
GPIO_9
GPIO_10
GPIO_11
GPIO_12
GPIO_13
I/O
I/O
I/O
I/O
I/O
34
GPIO_14
I/O
35
36
GPIO_15
BT_FREQ
I/O
Copyright © 2010 lesswire AG
SDIO 4-bit: Data line bit [0]
SDIO 1-bit: Data line
SDIO-SPI: Data output
G-SPI: Chip select input (active low)
SDIO 4-bit: Data line bit [1]
SDIO 1-bit: Interrupt
SDIO-SPI: Reserved
G-SPI: Data output
Reset (active low)
Has weak internal pull-up
Full power down (active low), has internal pull-up to VIO pin
3.3V Power supply
1.8V or 3.3V host supply. Provide supply to all I/O pins.
1.8V Power supply
Ground
Ground
Clock input for external sleep clock source (32.768kHz).
The sleep clock used during power save modes and can be generated
by an internal module clock source or provided from an external
source. When an external sleep clock source is used, the internal
sleep clock can be disabled to save power. For Bluetooth sleep mode
an external sleep clock is required.
UART RTS output
UART SOUT output
UART SINT input
UART CTS input
UART DSR input (normally not used)
For UART connection use GPIO_2, GPIO_6, GPIO_7 and GPIO_8
Host-to-Module wake-up input
UART DTR output (normally not used)
For UART connection use GPIO_2, GPIO_6, GPIO_7 and GPIO_8
AIU_SPDIF output / Module to Host interrupt output if AIU_SPDIF is
disabled
LED output (Bluetooth activity) / Configuration Pin
Note: Regardless of the I/O supply (1.8V or 3.3V), the supply to the
actual board LED always need to use 3.3V supply on the other end of
the LED and works as open drain circuitry.
Module-to-Host wake-up output
PC Card I/O Mode. Resets the card when active high.
Do not connect if not used.
Ground
SLEEPn output
LED output (WLAN TX or receive ready) / Configuration Pin
Note: Regardless of the I/O supply (1.8V or 3.3V), the supply to the
actual board LED always need to use 3.3V supply on the other end of
the LED and works as open drain circuitry.
AIU_TWSI_CLK input/output
AIU_TWSI_DATA input/output
BT_PCM_DIN input
BT_PCM_DOUT output
BT_PCM_CLK input/output (output if device is PCM master, input if
device is PCM slave)
BT_PCM_SYNC input/output (output if device is PCM initiator, input if
device is PCM target)
BT_PCM_MCLK output
Bluetooth frequency
0 – no frequency conflict between WLAN and the next Bluetooth
hopping frequency
1 – frequency conflict between WLAN and the next Bluetooth hopping
frequency
www.lesswire.com
Page 6 of 22
WiBear-SF Data Sheet
Version 1.03
37
BT_PRIORITY
38
BT_STATE
39
WL_ACTIVE
40
41
42
43
44
GND
ANT2
GND
GND
ANT1
Ground
I/O
Ground
Ground
I/O
45
GND
Ground
Bluetooth priority
2-Wire BCA: When high – Bluetooth is transmitting or receiving high
priority packets.
3-Wire BCA: When high – Bluetooth is requesting to transmit or
receive packets.
Bluetooth state
0 – normal priority, RX
1 – high priority, TX
BT_STATE is used to input the Bluetooth priority and direction of
traffic following the assertion of the BT_PRIORITY input.
WLAN Active
2-Wire BCA: When high – WLAN is transmitting or receiving packets.
3-Wire BCA: 0 – Bluetooth device allowed to transmit
1 – Bluetooth device not allowed to transmit
In 3 or 4 -wire BCA mode the signal output is programmable and can
be low during both Bluetooth RX and TX timeslots.
This pin drives low when in power down mode.
Ground
Bluetooth antenna for WiBear-SF2 module, for WiBear-SF1 not used
Ground
Ground
WLAN + Bluetooth antenna for WiBear-SF1 module, WLAN only
antenna for WiBear-SF2 module
Ground
Note: Some GPIO functions may vary depend on used firmware (driver) version. Please refer to firmware
description.
Note: In case of Bluetooth low power mode operation is needed connect to pin 14 32.768 kHz external clock
with ±50 ppm or better accuracy over temperature and voltage and configure module for operation from
external sleep clock (see section “Module configuration”). Typically the WLAN can use the internally
generated sleep clock derived from the reference clock source in all operation modes. But in case of the
Bluetooth application in where there is a requirement between master and slave relationship of the two
Bluetooth devices during sniff mode to have a clock source of 50 ppm or better. The internal generated
sleep clock is not accurate enough. Typically the accuracy of the internal sleep clock around 5000 ppm.
In case if low power Bluetooth mode does not needed module can be configured for operation with
internal sleep clock.
Note: Besides the aforesaid, connect pin 14 (SLEEP_CLK) to 32.768 kHz source if pin-to-pin compatibility with
further module models (WiBear-11n) required. Operation of newest models may be not possible without
this clock.
Copyright © 2010 lesswire AG
www.lesswire.com
Page 7 of 22
WiBear-SF Data Sheet
Version 1.03
Electrical Specifications
Absolute Maximum Ratings
Table 5: Absolute maximum ratings
Name
3V3
1V8
VIO
TSTORAGE
Parameter
Power supply voltage 3.3V
Power supply voltage 1.8V
I/O supply voltage 1.8V/3.3V
Storage temperature
Min
-0.3
-0.3
-0.3
-40
Max
4.2
2.3
4.2
+85
Units
ºC
Typ
3.3
1.8
1.8
3.3
Max
3.6
1.9
2.0
3.6
+85
Units
ºC
Operating Conditions
Table 6: Operating conditions
Name
3V3
1V8
VIO
TA
Parameter
Power supply voltage 3.3V
Power supply voltage 1.8V
I/O supply voltage 1.8V/3.3V
Min
3.1
1.7
1.6
3.0
-40
Ambient operating temperature
Current Consumption
Table 7: Current consumption
Mode
WLAN and Bluetooth RX
WLAN TX +18dBm
WLAN TX +15dBm
WLAN TX + 6dBm
WLAN RX, Bluetooth TX
Typical operation at maximum power, ~ 50% RX / 50% TX time
WLAN and Bluetooth in Deep Sleep mode
Shutdown
1.8V Current
AVG
Peak
170
180
170
180
170
180
170
180
200
205
180
205
0.025
0.025
3.3V Current
AVG
Peak
20
210
180
160
20
125
210
2.5
0.025
Units
mA
mA
mA
mA
mA
mA
mA
mA
Note: Average consumption current strongly depend on operation mode and RX/TX time ratio
Digital Pad Ratings
Table 8: Digital pad ratings
Name
VIH
Input high voltage
VIL
Input low voltage
VHYS
Input hysteresis
VOH
Output high voltage
VOH
Output low voltage
Parameter
Mode
1.8V
3.3V
1.8V
3.3V
1.8V
3.3V
1.8V
3.3V
1.8V
3.3V
Min
1.2
2.3
-0.3
-0.3
250
400
1.2
2.6
Max
VIO+0.3
VIO+0.3
0.6
1.1
0.4
0.4
Units
mV
mV
Note: Typical voltage at VIO pin.
Copyright © 2010 lesswire AG
www.lesswire.com
Page 8 of 22
WiBear-SF Data Sheet
Version 1.03
Radio Specifications
WLAN
Table 9: WLAN Radio specifications
Parameter
RF Frequency Range
Supported Channels
Modulation
Specification
2.400 – 2.500 GHz
1 – 13 (IEEE 802.11b/g)
802.11b: CCK and DSSS
802.11g: OFDM
802.11b: 1, 2, 5.5, 11 Mbps
802.11g: 6, 9, 12, 18, 24, 36, 48, 54 Mbps
802.11b: 18 dBm ± 1 dB
802.11g: 15 dBm ± 1 dB
802.11b: 1 Mbps -98 dBm ± 1 dB
11 Mbps -90 dBm ± 1 dB
802.11g: 6 Mbps -91 dBm ± 1 dB
54 Mbps -74 dBm ± 1 dB
Supported Data Rates
Transmit Power
Receiver Sensitivity
Table 10: 802.11b/g Channels Supported
Channel
10
11
12
13
14
Frequency,
GHz
2.412
2.417
2.422
2.427
2.432
2.437
2.442
2.447
2.452
2.457
2.462
2.467
2.472
2.484
North
America
Europe
Spain
France
Japan MKK
Note: channel 14 (Japan) operate in 802.11b mode only.
Bluetooth
Table 11: Bluetooth Radio specifications
Parameter
RF Frequency Range
Supported Modes
Number of channels
Modulation
Transmit Power
Receiver Sensitivity
Copyright © 2010 lesswire AG
Specification
2.400 – 2.4835 GHz
BT 2.1, BT3.0 HS, EDR
79
1 Mbps: GFSK (BDR)
2 Mbps: π/4 DQPSK (EDR)
3 Mbps: 8DQPSK (EDR)
Minimum +3 dBm
BDR: -90 dBm ± 1.5 dB
EDR: -87 dBm ± 1.5 dB
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Page 9 of 22
WiBear-SF Data Sheet
Version 1.03
Physical Dimensions
Figure 5: Physical dimensions
Recommended Footprint
Pitch=1.27
0.8
44
1.5
43
1.5
42
1.5
41
40
39
38
37
36
35
34
33
32
31
10
30
11
29
12
28
13
27
20±0.1
45
1.5
Pitch=1.27
1.5
0.6
1.6
14
15
16
17
18
19
20
21
22
23
24
25
26
Pitch=1.27
20±0.1
Figure 6: Recommended footprint
Copyright © 2010 lesswire AG
www.lesswire.com
Page 10 of 22
WiBear-SF Data Sheet
Version 1.03
Module Configuration
Module uses some pins as configuration inputs to set parameters following a reset. The definition of these pins
changes after reset to their usual function. When you need to configure the pins for a certain operation mode,
you need to provide a 100k pull down resistor to ground. No external circuitry is required (but allowed) to set a
configuration pin to high logical level. External reset is not needed for proper operation due to internal power-up
reset logic but can be used by host controller in cases of abnormal module behavior.
Table 12: Configuration pins
GPIO
GPIO_17
GPIO_2
Function
Host interface
configuration
Sleep Clock
configuration
Internally used
GPIO_1
Internally used
GPIO_6
Internally used
GPIO_16
Internally used
GPIO_5
Condition
PD
NC or PU
PD
NC or PU
NC or PD
PU
PD
NC or PU
PD
NC or PU
PD
NC or PU
Operation mode
G-SPI mode
SDIO 4-bit, SDIO 1-bit and SDIO-SPI mode
Internal sleep clock
External sleep clock (32.768 kHz) should be used
Allowed, does not change functionality
Not allowed
Not allowed
Allowed, does not change functionality
Not allowed
Allowed, does not change functionality
Not allowed
Allowed, does not change functionality
Notes: GPIO_17 and GPIO_5 are end-user selectable for configuration changing
G-SPI and SDIO-SPI configurations has different pins functionality
PD – Pull-Down resistor (100k – 10k)
NC – Not Connected (floating pin) or connected to high impedance input
PU – Pull-Up resistor (100k – 10k)
Note:
For all “NC or PU” in case of possible leakage to ground more than 1.2uA please apply Pull-Up resistor
to VIO.
Note:
simultaneous usage of LED on GPIO_17 line connected to 3.3V and Pull-Down is not allowed (LED
acts as a strong Pull-Up), do not connect LED in case of Pull-Down necessity.
Copyright © 2010 lesswire AG
www.lesswire.com
Page 11 of 22
WiBear-SF Data Sheet
Version 1.03
Host Interfaces
SDIO Interface
High speed host interface of WiBear-SF module (pins 1 – 6) can be configured as a SDIO (default) or G-SPI
interface. WiBear-SF module supports a SDIO device interface that conforms to the industry standard SDIO
Full-Speed specification and allows a host controller using the SDIO bus protocol to access the WLAN and/or
Bluetooth devices. Module also supports High Speed mode as defined in the SDIO 1.2 specification.
The SDIO interface supports dual function operation – for WLAN and Bluetooth. Dual functionality allows the
use of independent client drivers for WLAN and/or Bluetooth on the host platform. A module acts as the device
on the SDIO bus. The SDIO interface supports SPI, 1-bit SDIO and 4-bit SDIO modes at the full clock range of
0 to 50 MHz. Pin description shown in table below.
Table 13: SDIO interface description
Pin No.
Pin Name
SD_D2
Pin Type
I/O
SD_D3
I/O
SD_CMD
I/O
SD_CLK
SD_D0
I/O
SD_D1
I/O
Description
SDIO 4-bit: Data line bit [2] or Read Wait (optional)
SDIO 1-bit: Read Wait (optional)
SDIO-SPI: Reserved
SDIO 4-bit: Data line bit [3]
SDIO 1-bit: Reserved
SDIO-SPI: Chip select (active low)
SDIO 4-bit: Command/Response
SDIO 1-bit: Command line
SDIO-SPI: Data input
SDIO 4-bit: Clock input
SDIO 1-bit: Clock input
SDIO-SPI: Clock input
SDIO 4-bit: Data line bit [0]
SDIO 1-bit: Data line
SDIO-SPI: Data output
SDIO 4-bit: Data line bit [1] or Interrupt (Optional)
SDIO 1-bit: Interrupt
SDIO-SPI: Interrupt
Note: For SDIO interface selection see “Module configuration” chapter
fPP
TWL
TWH
Clock
TISU
TIH
Input
TODLY
Output
Figure 7: SDIO Protocol Timing Diagram
Copyright © 2010 lesswire AG
www.lesswire.com
Page 12 of 22
WiBear-SF Data Sheet
Version 1.03
fPP
TWL
TWH
Clock
TISU
TIH
Input
TODLY
TOH
Output
Figure 8: SDIO Protocol Timing Diagram at High Speed Mode
Table 14: SDIO Host Interface Timing Data
Symbol
fPP
Clock Frequency
Parameter
TWL
Clock Low Time
TWH
Clock High Time
TISU
Input Setup Time
TIH
Input Hold Time
TODLY
TOH
Output Delay Time
Output Hold Time
Condition
Normal
High Speed
Normal
High Speed
Normal
High Speed
Normal
High Speed
Normal
High Speed
High Speed
Min
10
10
2.5
Typ
Max
25
50
14
Units
MHz
MHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
G-SPI Interface
High speed host interface of WiBear-SF module (pins 1 – 6) can be configured as a G-SPI or SDIO (default)
interface. In G-SPI mode module supports a generic, half-duplex, DMA-assisted SPI host interface (G-SPI) that
allows a host controller using a generic SPI bus protocol to access the WLAN device. module acts as the slave
device on the SPI bus. The design is capable of 50 MHz operation. Pin description shown in table below.
Table 15: G-SPI interface description
Pin
Number
Generic SPI bus Name
Description
SINTn
SCLK_EN
SDI
SCLK
CSn
SDO
RSTn
SPI Unit active low interrupt output
SPI Unit clock Enable output
SPI Unit data input
SPI Unit clock input
SPI Unit active low chip select input
SPI Unit data output
Active low reset input (Module reset)
Note: For G-SPI interface selection see “Module configuration” chapter
Copyright © 2010 lesswire AG
www.lesswire.com
Page 13 of 22
WiBear-SF Data Sheet
Version 1.03
Each transaction is initiated by assertion of the active low signal SCSn. Following the assertion of SCSn, the
SDI input is latched with every positive edge of SCLK. When data is output, it is clocked out with the positive
edge of SCLK. The clock input SCLK is low at the start and completion of a transaction. The interrupt output
signal (SINTn) is asserted by the module to interrupt the host.
SCSn
TCSS
TSCLK
TWR
TCSH
TWF
SCLK
TWH
TSU
SDI
TWL
TH
VALID IN
TV
SDO
HI-Z
Figure 9: G-SPI Interface Transaction Timing
TCRF
SCSn
Figure 10: G-SPI Interface Inter-Transaction Timing
Table 16: G-SPI Host Interface Timing Data
Symbol
TSCLK
TWH
TWL
TWR
TWF
TH
TSU
TV
TCSS
TCSH
TCRF
Parameter
Clock Period
Clock High
Clock Low
Clock Rise Time
Clock Fall Time
SDI Hold Time
SDI Setup Time
SDO Hold Time
SCSn Fall to Clock
Clock to SCSn Rise
SCSn Rise to SCSn Fall
Copyright © 2010 lesswire AG
www.lesswire.com
Min
20
2.5
2.5
400
Typ
Max
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Page 14 of 22
WiBear-SF Data Sheet
Version 1.03
Bluetooth Coexistence Interface
Module supports configurations with internal or external Bluetooth operation. Only one of the system
configurations can be used at a time. The Bluetooth Coexistence Arbiter (BCA) can be configured to interface
with an external Bluetooth device or with the internal Bluetooth subsystem. With the external interface mode, a
choice of 2-wire (2WBCA), 3-wire (3WBCA) or 4-wire (4WBCA) signaling scheme is available. Only one of the
BCA schemes can be used at a time.
The 2WBCA interface decides which device has primary access to the shared wireless medium according to
the 2WBCA coexistence scheme. The 2WBCA interface makes its decision based on input signals from the
Bluetooth device, 802.11 MAC device and register settings. The 2WBCA interface module compares any
conflicting traffic based on a programmable table in the MAC registers. In that case arbiter needs to be
configured for 2WBCA operation, the default timer values and programmable options are optimized for 3WBCA
operation and may not be suitable for 2WBCA operation.
The 3WBCA and 4WBCA scheme operate the same, except that the 4WBCA includes an additional input
signal to specify whether the Bluetooth device is using a channel that overlaps with the WLAN channel. The
4WBCA coexistence framework is based on the IEEE 802.15.2 recommended practice Packet Traffic
Arbitration (PTA) scheme.
Table 17: Bluetooth coexistence signals
Pin No.
36
37
38
39
Pin Type
2-Wire
Not used
BT_PRIORITY
Not used
WL_ACTIVE
3-Wire
Not used
BT_RF_ACTIVE
BT_STATE
BT_TX_CONF
4-Wire
BT_FREQ
BT_RF_ACTIVE
BT_STATE
BT_TX_CONF
2WBCA
2WBCA accepts one input (BT_PRIORITY) from Bluetooth device, requesting access to the medium for a
priority Bluetooth event. The BCA unit outputs a control (WL_ACTIVE) signal to the Bluetooth device to signal
when the WLAN is active. The Bluetooth device should not attempt to transmit when the WL_ACTIVE signal is
high. The 2WBCA determines WLAN Rx and Tx priority based on the frame type and register settings.
3WBCA
BCA uses three signals. BT_RF_ACTIVE (BT_REQ) input signal to inform Module that Bluetooth traffic is
actively in Tx or Rx mode (Bluetooth device requests access to the medium). The assertion of this signal
precedes the actual Bluetooth packet slot time. BT_TX_CONF – output signal from Module to the Bluetooth
device to indicate permission to Tx. If this output is low, then the Bluetooth device can Tx. This signal stays low
for the duration of Bluetooth transmission. BT_STATE – input to inform the Module wether Bluetooth in Tx or
Rx mode and priority level of the traffic (priority of BT_RF_ACTIVE and the direction of the Bluetooth data).
Priority information on the BT_STATE input pin is signaled after the BT_RF_ACTIVE signal is asserted. The
Bluetooth Tx/Rx information on the BT_STATE input pin is signaled after priority information.
4WBCA
The 4WBCA based on the 3WBCA with the addition of an input signal specifying whether the Bluetooth device
will be using a channel that overlaps with the WLAN channel (in band) or does not overlap with the WLAN
channel (out of band) – BT_FREQ signal. The same control registers affect the 3WBCA and 4WBCA schemes.
Copyright © 2010 lesswire AG
www.lesswire.com
Page 15 of 22
WiBear-SF Data Sheet
Version 1.03
Antennas
Antenna Connection
On-board chip antennas or external antennas may be used with WiBear-SF module. Chip antenna can be
connected to the module by a 50 Ohm micro-strip or coplanar transmission line (see picture below).
Transmission line dimensions should be calculated in accordance to printed board and solder mask material
dielectric parameters, thickness and vertical distance to a next subject ground plane. In some cases antenna
may not perform as intended and exhibit undesirable characteristics, such as low gain or poor return loss. This
is mainly due to the mismatch of the antenna system to the 50 Ohm impedance feed line into the antenna or
the enclosure over the antenna (distance to ground plane and its shape around antenna, printed board material
dielectric constant and material thickness, housing material over the antenna, adjacent metal devices, such as
batteries, LCD panels etc.) To fix an antenna mismatch problem additional matching circuit with capacitors
and/or inductors should be used. Pi-network can be placed on board closed to antenna (components C4, C5,
L1 on example board) as a universal solution for almost any possible cases of mismatching. Please refer to the
application notes for chip antenna layout considerations which usually provided by manufacturers of antennas
for chip antenna placement and matching.
For external antenna connection widely used Hirose U.FL-R-SMT receptacle may be recommended (actually
as a standard solution for such or similar equipment). This connector should be connected to module by microstrip or coplanar 50 Ohm transmission line. It is good to keep free from surrounding top layer ground plane the
area under a coaxial connector and in close around the antenna terminal ANT1/ANT2 of the module (see
example below). Amount of the ground plane around RF connections and components should be maximized.
For reducing parasitic inductance of connection between ground planes at different levels sufficient amount of
VIAs should be used.
Figure 11: Example of the antenna connection to the module
Copyright © 2010 lesswire AG
www.lesswire.com
Page 16 of 22
WiBear-SF Data Sheet
Version 1.03
Antenna Accessories
Table 18: Antenna accessories
Part name and description
Hirose U.FL-R-SMT
Surface mounted 50-Ohm miniature
coaxial connector
Comment
U.FL coaxial receptacle may be mounted on
main board which consist WiBear-SF module
to provide RF connection between module
and external components (antenna). Actually
as a standard solution for such or similar
equipment
U.FL to SMA (receptacle) adapter cable
Ready-made cables of different length (from
75 to 300 mm) and diameters (0.81, 1.13 and
1.32 mm) are available on the market as well
as possibility of the custom production. The
SMA connector may be mounted in a panel.
Not approved for use in US and Canada.
Approved for EU (due to SMA connector).
U-FL to RP-SMA (receptacle) adapter
cable
Ready-made cables of different length (from
75 to 300 mm) and diameters (0.81, 1.13 and
1.32 mm) are available on the market as well
as possibility of the custom production. The
RP (Reverse Polarity) connector may be
mounted in a panel. Approved for use in the
US, Canada and EU (due to RP-SMA
connector).
Outlook
Antennas
Table 19: Antennas
Part name and description
Wuerth Elektronik 7488910245,
Johanson Technology 2450AT45A100
Chip antenna, surface mounting
Frequency range: 2400 – 2500 MHz
Gain: 3 dBi
Impedance: 50 Ohm
Size: 9.5 x 2.0 x 1.2 mm
WiMo 17010.10 / 17010.10REV
Half-wave dipole antenna
Frequency range: 2350 – 2500 MHz
Gain: 3.14 dBi
Impedance: 50 Ohm
Polarization: vertical
Size: 95 x 9 mm
Connector:
17010.10:
SMA plug
17010.10REV: RP-SMA plug
WiMo 17010.11 / 17010.11REV
Half-wave dipole antenna
Frequency range: 2350 – 2500 MHz
Gain: 3.14 dBi
Impedance: 50 Ohm
Polarization: vertical
Size: 95 x 16 mm
Connector:
17010.11:
SMA plug
17010.11REV: RP-SMA plug
Copyright © 2010 lesswire AG
Comment
Outlook
SMD Antenna
Both SMA and RP-SMA connectors approved
for EU, RP-SMA version only approved for US
and Canada.
Both SMA and RP-SMA connectors approved
for EU, RP-SMA version only approved for US
and Canada.
www.lesswire.com
Page 17 of 22
WiBear-SF Data Sheet
Version 1.03
Reference Design
Overview
Reference design shows how to connect a WiBear-SF module to the host controller over SDIO and UART
interfaces. WLAN and Bluetooth (BT2.1 + EDR) may be connected to the host simultaneously over SDIO bus
or separately over SDIO bus and UART for WLAN and Bluetooth correspondingly. For WLAN and Bluetooth HS
operation (BT3.0 HS + EDR) both connections are required (SDIO + UART). Possible to use onboard ceramic
antenna or external antenna connected via coaxial connector by means of setting of jumper R8 or R9. Host
interface voltage can be settled by jumper R6 or R7 (3.3V or 1.8V). Ready-made reference design available as
WiBear-SF Evaluation Kit (WiBear-SF1 or WiBear-SF2 EK Mini) from Lesswire AG.
Figure 12: Evaluation Kit outlook
Schematic Diagram
3V3
SD_D2
SD_D3
CMD
DAT2
DAT3
CMD
GND
VDD
CLK
GND
DAT0
DAT1
RESET
SD_D2
SD_D3
CMD
CLK
SD_D0
SD_D1
CLK
11
13
SD_D0
SD_D1
U1
3V3
SDIO
10
12
14
C1
100nF
J1
SD_D2
SD_D3
CMD
CLK
SD_D0
SD_D1
GPIO_1
UART_RTS
SDIO
VIO
UART_TXD
UART_RTS
UART_RXD
UART_CTS
R4
100K
UART
10
UART_TXD
UART_RXD
UART_CTS
J2
U2
3V3
C2
10uF
1V8
IN
OUT
C3
10uF
EN
GND
NC
3V3
R6
1V8
R7
DNP
VIO
GPIO_17
Host interface voltage selection
Install one of R6 (3.3V) or R7 (1.8V)
(Default R6 installed for 3.3V host)
MCP1824T-1802E
VIO
R5
100K
3V3
3V3
RESET
3V3
1V8 VIO 3V3
D1
Green
"Supply"
D2
Orange
"WLAN"
R1
620
GPIO_1
36
37
38
39
14
24
25
10
11
D3
Blue
"BT"
R2
1.6K
27
28
15
19
20
21
16
17
18
29
30
31
32
33
34
35
22
23
12
13
26
40
42
43
45
R3
820
GPIO_17
SD_D2
SD_D3
SD_CMD
SD_CLK
SD_D0
SD_D1
GPIO_0
GPIO_1
GPIO_2
GPIO_3
GPIO_4
GPIO_5
GPIO_6
GPIO_7
GPIO_8
GPIO_9
GPIO_10
GPIO_11
GPIO_12
GPIO_13
GPIO_14
GPIO_15
GPIO_16
GPIO_17
A1
2.45GHz
ANT1
R8
44
C5
C4
1.8pF
R9
DNP
1.5pF
L1
3.9nH
J3
MAIN
Antenna matching components (C4, C5, L1)
values depend on antenna type,
layout, PCB material and PCB thickness
ANT2
41
J4
AUX
BT_FREQ
BT_PRIORITY
BT_STATE
WL_ACTIVE
SLEEP_CLK
CF_INPAK
CF_RESET
RESET
PD
3V3
VIO
1V8
GND
GND
GND
GND
GND
GND
GND
WiBear-SF
Assembly option
Description
WiBear-SF1: WLAN and Bluetooth at the same antenna terminal (U1: ANT1, Pin 44)
U1
J4
WiBear-SF1 DNP
WiBear-SF2
WiBear-SF2: WLAN (U1: ANT1, Pin 44) and Bluetooth (U1: ANT2, Pin 41) at the different antenna terminals
* End user can select on-board antenna or coaxial connector usage for "Main" signal by means of installation of one of two resistors R8 or R9 (Default: on-board antenna)
Figure 13: Schematic diagram
Copyright © 2010 lesswire AG
www.lesswire.com
Page 18 of 22
WiBear-SF Data Sheet
Version 1.03
Assembly Diagram
Figure 14: Assembly diagram
Bill of Materials
Table 20: Bill of materials
Qty
Des
Part Description
Manufacturer Part Number
A1
Antenna CHIP 2450MHz 9.5x2.0x1.2mm
C1
C2,
C3
C4
C5
D1
D2
D3
J1
J2
J3
J4
L1
PCB
R1
R2
R3
R4,
R5
R6,
R8
R7,
R9
U1
CAP, CER, 100nF, 20%, X7R, 16V, SMD
0603
CAP, CER, 10uF, 20%, X5R, 6.3V, SMD
0805
CAP, CER, 1.8pF, +/-0.1pF, NP0, 50V,
SMD 0603
CAP, CER, 1.5pF, +/-0.1pF, NP0, 50V,
SMD 0603
LED, Green, SMD 0805
LED, Orange, SMD 0805
LED, Blue, SMD 0805
Pin Header, Double Row, 2.54mm pitch,
Straight, Shrouded, 2x7 Way, Through
Hole
Pin Header, Double Row, 2.54mm pitch,
Straight, Shrouded, 2x5 Way, Through
Hole
Coaxial Connector, 0 - 6GHz, SMD
Coaxial Connector, 0 - 6GHz, SMD
IND, CER, 3.9nH +/-0.3nH, 600mA, 0.3
Ohm, SMD 0603
PCB, 110x26x1.5mm, FR4, 2Layers,
Plated through holes
RES, 620 Ohm, 5%, 1/10W, SMD 0603
RES, 1.6K, 5%, 1/10W, SMD 0603
RES, 820 Ohm, 5%, 1/10W, SMD 0603
RES, 100K, 5%, 1/10W, SMD 0603
U2
Assembly Option
Johanson Technology:
2450AT45A100
Generic Components
Generic Components
Generic Components
Generic Components
Kingbright: KPHCM-2012SCGCK
Kingbright: KPHCM-2012SECK
Kingbright: KPHCM-2012PBC-A
Generic Components
DNP
DNP
Generic Components
Hirose: U.FL-R-SMT
Hirose: U.FL-R-SMT
DNP
DNP
DNP
Generic Components
Lesswire AG: WiBear-SF EK
Mini
Generic Components
Generic Components
Generic Components
Generic Components
Generic Components
Generic Components
DNP
WiBear
-SF1
DNP
WiBear
-SF2
RES, 0 Ohm, 1/10W, SMD 0603
RES, 0 Ohm, 1/10W, SMD 0603
WLAN 802.11b/g and Bluetooth Module,
20.0x20.0x3.0mm
CMOS LDO Voltage Regulator 1.8V
300mA, SOT23-5
Copyright © 2010 lesswire AG
Lesswire AG: WiBear-SF
Microchip: MCP1824T-1802E/OT
www.lesswire.com
Page 19 of 22
WiBear-SF Data Sheet
Version 1.03
Mounting process
The WiBear-SF is a surface mount module supplied on a 6-layer FR4-type PCB with gold plated connection
pads and produced in a lead-free process with a lead-free soldering paste.
Modules rated at moisture sensitivity level 3. See moisture sensitive warning label on each shipping bag for
detailed information. After opening the dry pack, modules must be mounted within 168 hours in factory
conditions of maximum 30°C/60%RH or must be stored at less than 10%RH. Modules require baking if the
humidity indicator card shows more than 10% when read at 23±5°C or if the conditions mentioned above are
not met. Please refer to J-STD-033B standard for bake procedure.
Module is compatible with industrial reflow profile for RoHS/Pb-free solders, Sn96.5/Ag3.0/Cu0.5 solder is a
right choice. Use of "No Clean" soldering paste is strongly recommended, cleaning the populated modules is
strongly discouraged - residuals under the module cannot be easily removed with any cleaning process.
Cleaning with water can lead to capillary effects where water is absorbed into the gap between the host board
and module. The combination of soldering flux residuals and encapsulated water could lead to short circuits
between neighboring pads.
Only a single reflow soldering process is encouraged for host boards with WiBear-SF modules.
The reflow profile used is dependent on the thermal mass of the entire populated PCB, heat transfer efficiency
of the oven and particular type of solder paste used. Since the profile used is process and layout dependent,
the optimum profile should be studied case by case. Recommendations below should be taken as a starting
point guide. In case of basic information necessity please refer to J-STD-020C standard.
Table 21: Recommended reflow profile
Profile feature
Ramp up rate (TSMAX to TP)
Minimum soak temperature (TSMIN)
Maximum soak temperature (TSMAX)
Soak time (ts)
Liquidus temperature (TL)
Time above TL (tL)
Peak temperature (TP)
Time within +0 / -5°C of actual TP (tp)
Ramp down rate
Time from 25°C to TP
Sn-Pb eutectic
(Sn63/Pb37)
3°C/sec max
100°C
150°C
60 - 120 sec
183°C
60 - 150 sec
215 - 225°C
10 - 30 sec
6°C/sec max
6 min max
RoHS/Pb-free
(Sn96.5/Ag3.0/Cu0.5)
3°C/sec max
150°C
200°C
60 - 180 sec
217°C
60 - 150 sec
235 - 245°C
20 - 40 sec
6°C/sec max
8 min max
Note: lowest value of TP and slower ramp down rate (2 - 3°C/sec) is preferred.
Figure 15: Reflow profile
Copyright © 2010 lesswire AG
www.lesswire.com
Page 20 of 22
WiBear-SF Data Sheet
Version 1.03
Certifications
General
This module has to be installed and used in accordance with the technical instructions provided by the
manufacturer. The module may be implemented in the configuration that was authorized. Note that any
modifications of this equipment not expressly approved by the manufacturer could void the user’s authority to
operate the equipment.
European Union Regulatory Compliance
WiBear-SF module has been tested and complies with the regulatory standards EN 300 328 and EN 301 489 1/-17. We declare that the human exposure of this module is below the SAR limits specified in the EU
recommendations 1999/519/EC.
IMPORTANT: The ‘CE’ marking must be affixed to a visible location on the OEM product, where this module is
installed in, and has to be labeled in accordance to R&TTE Directive 1999/5/EC.
FCC Compliance
This device complies with Part 15 of the FCC Rules and has limited modular approval due to module shield
absence. Operation is subject to the following two conditions: (1) This device may not cause harmful
interference, and (2) this device must accept any interference received, including interference that may cause
undesired operation.
Not authorized modification could void authority to use this equipment.
This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. The
internal / external antenna(s) used for this module must provide a separation distance of at least 20 cm from all
persons and must not be co-located or operating in conjunction with any other antenna or transmitter.
NOTE: The outside of final product that contain a WiBear-SF module must display in a user accessible area a
label referring to the enclosed module. This exterior label can use wording such as the following: “Contains
Transmitter Module FCC ID: PV7-WIBEAR-SF-STA” or “Contains FCC ID: PV7-WIBEAR-SF-STA”, for
equipment which contain WiBear-SF1 Module and “Contains Transmitter Module FCC ID: PV7-WIBEAR-SFUAP” or “Contains FCC ID: PV7-WIBEAR-SF-UAP” for equipment which contain WiBear-SF2 Module.
IC Compliance
The term "IC" before the radio certification number only signifies that Industry Canada technical specification
were met. WiBear-SF1 IC ID: 7738A-WIBEARSFSTA, WiBear-SF2 IC ID: 7738A-WIBEARSFUAP.
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.
The installer of this radio equipment must ensure that the antenna is located or pointed such that it does not
emit RF field in excess of Health Canada limits for the general population; consult Safety Code 6, obtainable
from Health Canada.
Approved Antenna List
Module has been tested and approved for use with the antennas listed in the table below.
Table 22: Approved Antenna List
Model Name
17010.10REV
7488910245
Manufacturer and description
WiMo, Halfwave dipole, SMA, 2350 – 2500 MHz
Wuerth Elektronik, chip antenna, 2400 - 2500 MHz
Gain [dBi]
3.14
Alternative antenna of the same type and which has a gain equal or less that the approved antenna can be
used without recertification. Use of an antenna different type or same type but higher gain will invalidate the
country approvals, in that case OEM installer must authorize usage of alternative antenna with respective
regulatory agencies.
Copyright © 2010 lesswire AG
www.lesswire.com
Page 21 of 22
WiBear-SF Data Sheet
Version 1.03
Revision History
Table 23: Revision history
Date
Version
17-Dec-2010
0.90
08-Feb-2010
0.91
Author
Igor Shevchenko
Wilfried Lohmann
Igor Shevchenko
16-Mar-2011
0.92
Igor Shevchenko
17-Mar-2011
0.93
Igor Shevchenko
18-Apr-2011
0.94
Igor Shevchenko
03-May-2011
0.95
Igor Shevchenko
30-May-2011
14-Jun-2011
15-Jun-2011
0.96
0.97
0.98
25 -Oct-2011
0.99
Igor Shevchenko
Igor Shevchenko
Igor Shevchenko
Igor Shevchenko
Andras Varadi
29-Nov-2011
1.00
Igor Shevchenko
01-Dec-2011
1.01
Igor Shevchenko
28-Feb-2012
1.02
Igor Shevchenko
12-Mar-2012
1.03
Igor Shevchenko
Copyright © 2010 lesswire AG
Description
Preliminary release
Current consumption table added
Pin Description table changed
“Module configuration” chapter and G-SPI Interface
description added
BT Output Power changed
SDIO Interface description added
Note about SLEEP_CLK and WLAN 802b/g Supported
Channels added, Bluetooth output power changed. Storage
temperature corrected to -40F+85C. FCC Compliance
explanation expanded.
Key features expanded (Supported standards)
Supported Channels list corrected
Sleep clock note added
Bluetooth coexistence interface section added
Module configuration notes are expanded
Radio specifications changed.
Reflow solder profile added.
Reflow solder profile updated.
Added note on page 3. Minor text errors fixed.
Module, Evaluation Kit photos and module dimensions
drawing updated (w/o shielding), recommended antennas
parameters updated, Wuerth 7488910245 chip antenna to
approved antenna list added. IC compliance added. SDIO
timing diagrams error fixed.
MSL Class 3 information added, recommended reflow profile
note updated, note for channels supported list added.
FCC and IC compliance expanded (FCC limited modular
approval and IC IDs added)
Antennas parameters in Table 19 updated
www.lesswire.com
Page 22 of 22

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