SOYO BT24G03 User manual
User’s Manual of 3rd
Generation Bluetooth Module
Product Name： 3rd Generation Bluetooth Module
Model： SOYO-BT24G03
Date： 2014-09-0
Edition： Version1.0
Soyo Technology Development Co. Ltd.
All rights reserved
Soyo Technology Co. Bluetooth Module SOYO-BT2 G03
Content
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Soyo Technology Co. Bluetooth Module SOYO-BT2 G03
1.Introduction
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2.Applications
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3. Functions
3.1 Framework
3.2 Functions Description
1）Support MP3/WMA/WAV/SBC
2）Bluetooth Stereo Transmission, BT call
3）FM Ra io Tuner
4）Micro SD Controller, USB(Slave)
5）Stereo Analog Auxiliary Line Input
6）UART Serial Interface, Self-Customize AT Communications Protocols
7）Internal Integrate Power Management Circuits
8）I2S an I2C Controller
9）Micro SD Program Up ating
10) ADC Serial Keypa s+ Power on Reset Control, an Har ware Power on
11) Multiple I/O Ports for a itional applications
Soyo Technology Co. Bluetooth Module SOYO-BT2 G03
12) USB Soun A apter
4. Specifications
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5. Pins Description
5.1 ins Distribution
Soyo Technology Co. Bluetooth Module SOYO-BT2 G03
5.2 ins Functions Declaration
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6. Key Function Description
6.1.1 Module ower up （Starting up at 3.7-4.2V or USB
power up）
6.1.2 WRKEY
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Soyo Technology Co. Bluetooth Module SOYO-BT2 G03
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6.1.3 Mode Key
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At Bluetooth mo e if no Bluetooth evice is connecte within 5 minutes, it shut
off automatically to save the battery. Press PWRKEY to restart if nee e .
6.1.4 rev / Vol-( revious music/ revious broadcast/Volume
down)
6.1.4.1 Previous music at the micro SD an Bluetooth mo e
6.1.4.2 Previous broa cast at the FM mo e
6.1.4.3 Invali at LINE IN mo e
6.1.4.4 Hol ing own for over 2 secon s, volume ecreases. There will be
“ u u” in icating voice when minimum volume. (Apply to all mo es)
6.1.5 Next/Vol+(Next music/Next broadcast/Volume up)
6.1.5.1 Next music at the micro SD an Bluetooth mo e
6.1.5.2 Next broa cast at the FM mo e
6.1.5.3 Invali at LINE IN mo e
6.1.5.4 Hol ing own for over 2 secon s, volume increases. There will be
“ u u” in icating voice when maximum volume. (Apply to all mo es)
6.1.6 lay/ ause( lay/ ause、Accept、Dial、Hang up)
6.1.6.1 Play/Pause、Accept、Dial、Hang up at Bluetooth mo e. After pairing
complete , hol own for over 3 secon s or press twice consecutively to
ial last number. Han ling the call, press to accept; hol own for over 3
secon s to reject. Press in the call to hang up.
Play/Pause at micro SD mo e.
6.1.6.3 FM Mo e
Hol own for over 3 secon s to auto-search. (Starting from the lowest
at FM frequency range, green LED flashing) It auto-save the broa casts
an continue. The first-save broa casts will be playe after auto-
searching. You can press PLAY/PAUSE Key to control FM ra io to pause
an start again. Auto-search broa casts when first time at FM mo e after
Device programming.
6.1.6.4 Play/Pause at Line In mo e.
6.1.7 CH( airing)
6.1.7.1 Press to pair an abolish pairing.
Soyo Technology Co. Bluetooth Module SOYO-BT2 G03
6.1.8 RESET KEY(Reset)
Software reset when system halte . Press PWR Key to restart.
7. Module Diagram and Dimensional Drawing
7.1.1. Dimensional Drawing
Soyo Technology Co. Bluetooth Module SOYO-BT2 G03
7.1.2 Module Image
7.1.3 ins Drawing
. Reference
Applications
%
Soyo Technology Co. Bluetooth Module SOYO-BT2 G03
7
Soyo Technology Co. Bluetooth Module SOYO-BT2 G03
9 I/O pins
Pin No. Definition Remark
31 GPIO_7/KEYOUT3 Default line in etecting/Normal I/O,
response to interruption, compoun matrix
keypa
19 GPIO_11/KEYOUT2 Default earphone etecting/Normal I/O, not
response to interruption, compoun matrix
keypa
20 GPIO_17/KEYOUT1 Default external PA Stan by, compoun
matrix keypa
18 GPIO_21/KEYIN4 Default BT_LED output, low electrical
level vali , compoun matrix keypa
17 GPIO_8/KEYOUT4 Default LED1 output, low electrical level
vali , compoun matrix keypa
1 GPIO_3 Default IR import/Normal I/O, Response to
external interruption
2 GPIO_1/KEYIN6 Default Car etecting/Normal I/O,
Response to external interruption,
compoun matrix keypa
3 UART2_RXD/GPIO_8 Default Uart port
4 UART2_TXD/GPIO_1
3
Default Uart port
Control Instruction
LED
In icator
Charge in icator Bluetooth In icator Reserve LED In icator , Self-
efine
:
Soyo Technology Co. Bluetooth Module SOYO-BT2 G03
Off when D6 full GPIO_21 GPIO_8
CARD DATA CMD CLK DECT
D0-D3 SSD_CMD SSD_CLK GPIO_1
MUTE Earphone Mute Control Power Amplifier Mute Control
GPIO_17( Low electrical vali )
OTHER Self-Define base on ports
10. PCB LAYOUT
1）Bluetooth antenna shoul be place avoi ing metal, because metal weaken
antenna function. It is forbi en to place groun or wire un er Bluetooth antenna.
2）Metal component such as battery an chip shoul not overlap antenna. Mo ule
antenna is suppose to be place at the e ge of PCB.
3）Signals an Bluetooth evice are largely influence by the environment. For
instance, obstacles such as trees an metal absorb signals to a certain extent. An
therefore transmission istance is often influence in practice.
4）As Bluetooth mo ule fits in certain systems placing insi e cases, metal cases
shoul be avoi e .
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