SIM Tech SIMCom SIM521 Series, Руководство пользователя

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Smart Machine Smart Decision
SIM521x EVB User Guide 11.04.2011
21
4.11 Audio & GPIO interface
Figure 13: Audio and GPIO Interface
Table 17: Audio & GPIO interface--- J311& J313 Pin List
Pin Signal I/O Description
1 GPIO0 Input,
interrupt
Input Port with interrupt/PCM DIN.
If it is used as interrupt port, you can use
AT Command to set interrupt triggering
mechanism & polarity.
3 GPIO1 O General Purpose Output Port without
interrupt. Status Led indication.
5 GPIO2 I
General Purpose Input Port without
interrupt./PCM SYNC
7 GPIO3 O General Purpose Output Port (default
value: Low Level)/PCM CLK
9 GPIO4 I RF Control Interrupt
： Flight Mode
Switch
11 GPIO5 O General Purpose Output Port (default
value: Low Level)/PCM DOUT
13 HKADC0 I ADC interface
15 PWR_ON I Power On/off
2 MIC1_P I MIC plus
4 MIC1_M I MIC minus
6 EAR1Q_P O Positive receiver output
8 EAR1Q_N O Negative receiver output
10
HPMIC_P
I Headset MIC plus
12
HPL
O
Positive microphone output
14
HPR
O
Negative microphone output
16
GND
Ground
17
SPK_P
O Positive speaker output
18 SPK_N O Negative speaker output