SimCom SIM5300E Hardware Design page 18

Audio interfaces only for SIM5300EA (these pins of SIM5300E should be NC)
MIC_P 19
MIC_N 20
SPK_P 21
SPK_N 22
Status
STATUS 66
NETLIGHT 52
SPI interface
SPI _CLK 11
SPI_MOSI 12
SPI_MISO 13
SPI_CS 14
I2C interface
SDA 37
SCL 38
GPIOs
GPIO1 40
GPIO2 41
GPIO3 42
GPIO4 43
GPIO6 47
GPIO7 48
SIM5300E_Hardware_Design_V1.02
AI Differential audio input
AO Differential audio output
DO Power on status indication
DO Network status indication
DO
DO
SPI interface
DI
DO
IO I2C serial bus data
DO I2C serial bus clock
GPIO1
GPIO2
GPIO3
IO
GPIO4
GPIO6
GPIO7
If these pins are
unused, keep
floating.
If these pins are
unused, keep
floating.
If these pins are
unused, keep
floating.
If these pins are
unused, keep
floating.
If these pins are
unused, keep
floating.
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