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Soyo Technology Co.
20
GPIO_17/KEYOU
T1
21
GND
22
GND
23
VBAT
24
AU_RCV_P
25
AU_RCV_N
26
CHG_IN
27
KEYIN_N
28
KEYIN_P
29
KEYIN_SEN
30
GP_ADC_IN_0
31
LINE_DECT
32
LINE_IN_L
33
LINE_IN_R
34
AU_HPL
35
AU_HPR
36
AU_MIC_N
37
AU_MIC_P
38
AGND
39
FM_ANT
40
GND
41
USB_DM
42
USB_DP
43
I2S_BCK
44
I2S_IN
45
I2S_DOUT
46
I2S_LRCK
47
HST_TXD
48
HST_RXD
49
GND
50
BT_ANT
51
I2C2_SDA
52
I2C2_SCL
53
BBPLL_TEST
6. Key Function Description
Module Power up （ Starting up at 3.7-4.2V or USB
6.1.1
power up）
6.1.2 PWRKEY
Press PWR KEY to power on, get in Bluetooth mode by
default
Bluetooth Module SOYO-BT24G03
Keypad
GPIO, no External Interrupt ， Compound
Matrix Keypad
Ground
Ground
Module Power Supply 3.4-4.2V
Audio Diferential Input Positive
Audio Diferential Input Negative
Internal
Expanding）
Matrix port In
ADC Keypad
ADC Keypad
ADC Keypad(Reservation)
GPIO/Default LINE Detection ， External
Interrupt，Compound Matrix Keypad
Line In Left
Line In Right
Audio Single Track Left
Audio Single Track Right
MIC Input Negative
MIC Input Positive
Analog Ground
FM Antenna
Ground
USB DATA-
USB DATA+
Serial Clock
Audio Data Input
Audio Data Output
Flame Clock
DEBUG
DEBUG
Ground
Bluetooth Antenna
I2C Data
I2C Clock
Clock Output Testing （ For I2S Main
Clock）
and
hear
the
4
Charging （ Need
Bluetooth
Indicating
External
Voice.
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