Chengdu Ebyte Electronic Technology Co.,Ltd
E104-BT30-TB1 User Manual
Copyright ©2012–2019
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Chengdu Ebyte Electronic Technology Co.,Ltd
2-5
20
SPI-PCM
I
SPI/PCM input selection, 0=PCM/PIO interface, 1=SPI
21
LED2
O
Bluetooth status indication LED2 driver output
22
LED0
O
Bluetooth status indication LED0 driver output
23
PIO5
I/O
SPI-CLK debug load pin
24
PIO2
I/O
SPI-MOSI debug load pin
25
PIO16
I/O
Module audio output indication pin, high level is effective
26
AIO0
I/O
Analog programmable I/O pin 0 (reserved function)
27
GND
P
Ground, connect to power reference ground
28
Reserve
O
Unused
29
Reserve
O
Unused
30
Reserve
O
Unused
31
Reserve
O
Unused
32
Reserve
O
Unused
33
PIO9
I/O
Play / Pause
Key input, high level effective
34
PIO7
I/O
Key input, high level effective, long press to continuously
increase;
35
VDD-PADS
-2
P
Input and output port power 2, usually 1.8V power connection
36
1V8-SMPS
P
Module 1.8V power output, external decoupling capacitor is recommended, see
4.2 Recommended circuit for details
37
VDD-PADS
-1
P
Input and output port power supply 1, usually 1.8V power supply connection
38
PIO8
I/O
Previous song Key input, high level is effective
39
PIO6
I/O
General-purpose I / O (reserved function)
40
GND
P
Ground, connect to power reference ground
41
MIC-AN
I
Channel A line or microphone input negative
42
MIC-AP
I
Channel A line or microphone input positive
43
LINE-BN
I
Channel B line input negative
44
LINE-BP
I
Channel B line input positive
45
MIC-BIAS
I
Microphone bias
46
PIO0
I/O
Volume -
Key input, high level effective, long press to continuously
decrease;
47
SPK-LN
O
Left channel speaker output negative
48
SPK-LP
O
Left channel speaker output positive
49
SPK-RP
O
Right channel speaker output positive
50
SPK-LN
O
Left channel speaker output negative
51
PIO1
I/O
Next song Key input, high level is effective
52
PIO21
I/O
General-purpose I / O (reserved function)
Pay attention:
The function description of the above pins is only for the default program functions of our company. If you need other
functions, please contact us for customization. For the self-developed pin functions, please refer to the official user manual of
CSRA64215.
