Ehong Technology MA41 Bluetooth module User Manual Datasheet

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Document ID	2279966
Application ID	MxWsLH036bLoCum6mRabcA==
Document Description	User Manual
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Document Type	User Manual
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Date Submitted	2014-05-29 00:00:00
Date Available	2014-05-29 00:00:00
Creation Date	2014-04-14 11:02:34
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Document Lastmod	2014-05-29 09:45:37
Document Title	Datasheet
Document Creator	Acrobat PDFMaker 10.1 for Word
Document Author:	EHong Technologies;zhaoyun

Bluetooth Transmit Data Module
User Manual
EH-MA41
Brand Name:Ehong
FCC ID:2ACCRMA41
Shanghai Ehong Technologies Inc
Bluetooth Transmit Data Module
Description:
EH-MA41 is a class 2 Bluetooth® 3.0
module. It is a highly integrated and
sophisticated module which contains all
the necessary elements from radio to
antenna and a fully implemented
protocol stack. It is an ideal solution for
integrating Bluetooth® into various
products with limited knowledge of
Bluetooth® and RF technologies.
Features:

Bluetooth V3.0

TX power +5.18dbm, / -84dBm RX
sensitivity

Onboard Meander line PCB antenna
support 10 meters

Support sniff and deep sleep mode

Supports master and slave
 Supports Bluetooth profiles SPP,
With AT command stack firmware,
iAP, HID
designers can easily customize their
applications to support different
 UART and USB and
Bluetooth profiles, such as SPP, HID,
data interfaces
HFP and etc.
And the module can also interface with  I2C Master interface
Apple’s Authentication Coprocessor and
build an iAP over Bluetooth application.  Support Apple iAP protocol
Typical Bluetooth applications:
 PCM digital audio interfaces
 Cable replacement
 RoHS compliant
 Bar code and RFID scanners
 Measurement and monitoring
systems
 Industrial sensors and controls
 Medical devices
 Industrial PCs and laptops
Shanghai Ehong Technologies Inc
Bluetooth Transmit Data Module
1. EH-MA41 Product numbering
A.
B.
C.
D.
EH ------------MA41 -----------X
-----------V
------------
EH-MA41-X-V1.0
Company Name(EHong)
Module Name
N (no)
Hardware revision
2. Pinout and Terminal Description
2.1.Pin Configuration
Figure 1： Pinout of EH-MA41
Pin
Symbol
I/O Type
Description
AIO1
Bi-directional
Programmable input/output line
GND
Ground
Ground
Shanghai Ehong Technologies Inc
Bluetooth Transmit Data Module
11
PCM_OUT
12
VDD_3V3
CMOS input, with weak
internal pull-down
Bi-directional with
programmable strength
internal pull-up/down
Bi-directional with
programmable strength
internal pull-up/down
CMOS input with weak
internal pull-up
input with weak internal
pull-down
Bi-directional with weak
internal pull-down
Bi-directional with weak
internal pull-down
CMOS Input, with weak
internal pull-down
CMOS output, tristate, with
weak internal pull-down
3V3 power input
13
GND
Ground
Ground
14
GND
Ground
15
PIO11
16
PIO10
17
PIO9
18
PIO8
19
GND
20
UART_RXD
21
UART_TXD
22
UART_RTS
23
UART_CTS
Ground
Bi-directional with
programmable strength
internal pull-up/down
Bi-directional with
programmable strength
internal pull-up/down
Bi-directional with
programmable strength
internal pull-up/down
Bi-directional with
programmable strength
internal pull-up/down
Ground
CMOS input with weak
internal pull-down
CMOS output, tristate, with
weak internal pull-up
CMOS output, tri-state, with
weak internal pull-up
CMOS input with weak
internal pull-down
SPI_MOSI
PIO6
PIO7
RESETB
SPI_CLK
PCM_CLK
PCM_SYNC
PCM_IN
Shanghai Ehong Technologies Inc
Serial Peripheral Interface data input
Programmable input/output line
Programmable input/output line
Reset if low. Input denounced so must be
low for >5ms to cause a reset
Serial Peripheral Interface clock
Synchronous Data Clock
Synchronous Data Sync
Synchronous Data Input
Synchronous Data Output
3V3 power input
Programmable input/output line
Programmable input/output line
Programmable input/output line
Programmable input/output line
Ground
UART data input
UART data output
UART request to send active low
UART clear to send active low
Bluetooth Transmit Data Module
24
USB_D+
Bi-directional
25
USB_D-
26
PIO2
27
PIO3
28
PIO5
29
PIO4
30
SPI_CSB
31
SPI_MISO
32
AIO0
Bi-directional
Bi-directional with
programmable strength
internal pull-up/down
Bi-directional with
programmable strength
internal pull-up/down
Bi-directional with
programmable strength
internal pull-up/down
Bi-directional with
programmable strength
internal pull-up/down
CMOS input with weak
internal pull-up
CMOS output, tri-state, with
weak internal pull-down
Bi-directional
USB data plus with selectable internal
1.5K pull-up resistor
USB data minus
Programmable input/output line
Programmable input/output line
Programmable input/output line
Programmable input/output line
Chip select for Synchronous Serial
Interface active low
Serial Peripheral Interface data output
Programmable input/output line
Table 1：PIN Terminal Description
Shanghai Ehong Technologies Inc
Bluetooth Transmit Data Module
3. Power Supply
The module accepts a 3.3V DC power input. Power supply should guarantee good ripple
suppression and enough current.
4. Reset
The module may be reset from several sources: RESETB pin, power-on reset, a UART break
character or via software configured watchdog timer.
The RESETB pin is an active low reset and is internally filtered using the internal low frequency
clock oscillator. A reset will be performed between 1.5 and 4.0ms following RESETB being
active. It is recommended that RESETB be applied for a period greater than 5ms.
Pin Name / Group
Pin Status on Reset
PIOs
Input with weak pull-down
AIOs
Output, driving low
PCM_OUT
Tristated with weak pull-down
PCM_IN
Input with weak pull-down
PCM_SYNC
Input with weak pull-down
PCM_CLK
PD
UART_TX
Output tristated with weak pull-up
UART_RX
Input with weak pull-down
UART_RTS
Output tristaed with weak pull-up
UART_CTS
Input with weak pull-down
USB_DP
Input with weak pull-down
USB_DN
Input with weak pull-down
SPI_CSB
Input with weak pull-up
SPI_CLK
Input with weak pull-down
SPI_MOSI
Input with weak pull-down
SPI_MISO
Tristated with weak pull-down
RESETB
Input with weak pull-up
Table 7: Pin Status on Reset
5. Antenna
The module integrates a Meander line PCB chip antenna so there’s no need to use antenna on
customer’s PCB.
Shanghai Ehong Technologies Inc
Bluetooth Transmit Data Module
6. PIO
EH-MA41 has a total of 10 digital programmable I/O terminals. They are powered from VDD
(3.3V). Their functions depend on firmware running on the device. PIO lines can be configured
through software to have either weak or strong pull-ups or pull-downs.
Note:
All PIO lines are configured as inputs with weak pull-downs at reset.
Any of the PIO lines can be configured as interrupt request lines or as wake-up lines from sleep modes.
7. AIO
EH-MA41 has 2 analogue I/O terminals. Their functions depend on software. Typically ADC
functions can be configured to battery voltage measurement. They can also be used as a digital
PIO.
8. UART
This is a standard UART interface for communicating with other serial devices. The UART
interface provides a simple mechanism for communicating with other serial devices using the
RS232 protocol.
The UART CTS and RTS signals can be used to implement RS232 hardware flow control where
both are active low indicators.
Table 8: Possible UART Settings
Parameter
Baud Rate
Possible Values
Minimum
Maximum
Flow Control
Parity
Number of Stop Bits
Bits per Byte
1200 baud (≤2%Error)
9600 baud (≤1%Error)
3M baud (≤1%Error)
RTS/CTS or None
None, Odd or Even
1 or 2
9. I2C Master
PIO6, PIO7 and PIO8 can be used to form a master I2C interface. The interface is formed using
software to drive these lines. It is suited only to relatively slow functions such as driving a LCD,
keyboard scanner. In the case, PIO lines need to be pulled up through 2.2KΩ
resistors.
Shanghai Ehong Technologies Inc
Bluetooth Transmit Data Module
10. SPI interface
The synchronous serial port interface (SPI) is used for flash/debug the module only. It can not be
used for any user functionality. Please always design test points for this interface on the PCB in
case that the module is needed to re-flash or flash-in-field in manufacture.
11. PCM interface
PCM is a standard method used to digitize audio (particularly voice) for transmission over digital
communication channels. Through its PCM interface, the module has hardware support for
continual transmission and reception of PCM data, thus reducing processor overhead for
applications. The module offers a bi-directional digital audio interface that routes directly into
the baseband layer of the on-chip firmware. It does not pass through the HCI protocol layer.
Hardware on the module allows the data to be sent to and received from a SCO connection. Up
to three SCO connections can be supported by the PCM interface at any one time.
The module can operate as the PCM interface master generating an output clock of 128, 256 or
512kHz. When configured as PCM interface slave, it can operate with an input clock up to
2048kHz. The module is compatible with a variety of clock formats, including Long Frame Sync,
Short Frame Sync and GCI timing environments.
Shanghai Ehong Technologies Inc
Bluetooth Transmit Data Module
It supports 13-bit or 16-bit linear, 8-bit µ-law or A-law companied sample formats at 8k
samples/s and can receive and transmit on any selection of three of the first four slots following
PCM_SYNC.
The module interfaces directly to PCM audio devices including the following:
 Qualcomm MSM 3000 series and MSM 5000 series CDMA baseband devices
 OKI MSM7705 four channels A-law and µ-law CODEC
 Motorola MC145481 8-bit A-law and µ-law CODEC
 Motorola MC145483 13-bit linear CODEC
 STW 5093 and 5094 14-bit linear CODECs
 The module is also compatible with the Motorola SSI™ interface.
12. PCM Interface Master
When PCM is configured as a master, the module generates PCM_CLK and PCM_SYNC.
Figure 3: Configured PCM as a Master
When PCM is configured as the slave, the module accepts PCM_CLK rates up to 2048kHz.
Shanghai Ehong Technologies Inc
Bluetooth Transmit Data Module
13. USB
This is a full speed (12M bits/s) USB interface for communicating with other compatible digital
devices. The module acts as a USB peripheral, responding to request from a master host
controller, such as a PC.
The USB interface is capable of driving a USB cable directly. No external USB transceiver is
required. The device operates as a USB peripheral, responding to requests from a master host
controller such as a PC. Both the OHCI and the UHCI standards are supported. The set of USB
endpoints implemented can behave as specified in the USB section of the Bluetooth specification
V3.0 or alternatively can appear as a set of endpoints appropriate to USB audio devices
such as speakers.
The module has an internal USB pull-up resistor. This pulls the USB_DP pin weakly high when
module is ready to enumerate. It signals to the USB master that it is a full speed (12Mbit/s) USB
device.
Shanghai Ehong Technologies Inc
"Attention ‐ Limited Modular Approval
This RF Module is strictly limited to integration into battery-poerated host devices. Integration
into devices that are directly or indirectly connected to AC lines may be added via Class II
Permissive Change."
(OEM) Integrator has to assure compliance of the entire end‐product incl. the integrated RF
Module. Additional measurements (15B) and/or equipment authorizations(e.g Verification) may
need to be addressed depending on co‐location or simultaenous transmission issues if applicable.
Integrator is reminded to assure that these installation instructionswill not be made available to
the end‐user of the final host device.
With the documented max output power this RF Module meets the FCC SAR Exemption ‐ so it
comply with any applicable RF exposure requirements in its final configuration.
The RF Module is powered by DC ,the antenna is PCB antenna and the antenna gain is 0 dBi
The final host device, into which this RF Module is integrated" has to be labelledwith an auxilliary
lable stating the FCC ID of the RF Module, such as"Contains FCC ID: 2ACCRMA41"
This device complies with part 15 of the FCC rules. 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.
"Changes or modifications to this unit not expressly
approved by the party
responsible for compliance could void the user’s authority to operate the equipment."

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Title                           : Datasheet
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