Sunsea AIoT SIMCom SIM7075G User Manual page 16

SIM_DET 42
USIM_GND 47
USB*
USB_VBUS 8
USB_DP 9
USB_DM 10
UART interface
UART1_DTR 30
UART1_RXD 34
UART1_TXD 35
UART1_CTS 36
UART1_RTS 37
UART1_DCD 38
UART1_RI 39
DEBUG_RXD 22
DEBUG_TXD 23
GNSS_UART_
27
TXD
GNSS_UART_
28
RXD
I2C interface
I2C_SCL 40
I2C_SDA 41
PCM interface
PCM_CLK 4
PCM_SYNC 5
PCM_DIN 6
PCM_DOUT 7
SPI interface
SPI_MOSI 19
SPI_MISO 20
SPI_CLK 21
SPI_CS 48
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SIM card detect, the module is not
DI
support hot-swap function.
Ground for SIM Card
Valid USB detection input with
DI,PD
3.5~5.25V detection voltage
Positive line of the differential,
I/O
bi-directional USB signal.
Negative line of the differential,
I/O
bi-directional USB signal.
DI,PH DTE get ready
DI,PL Receive Data
DOH Transmit Data
DOL Clear to Send
DI,PL Request to send
DOH Carrier detects
DOH Ring Indicator
DI,PL The default function is GPIO, and
UART is only used for software
DOH secondary development. Cannot be
used as AT communication port.
DO GNSS transmit data
DI GNSS receive data
OD I2C clock output
OD I2C data input/output
DO PCM data bit clock.
DO PCM data frame sync signal.
DI PCM data input.
DO PCM data output.
Main Controller DATA output.
DO
Multiplexed by GPIO1
Main Controller DATA input.
DO
Multiplexed by GPIO2
Bus clock output,
DI
Multiplexed by GPIO3
Chip Select,
DO
Multiplexed by GPIO5
SIM7075G User Manual V1.00
Software download
interface. It is
recommended to
reserve interfaces or
test points.
If unused, keep them
open.
Debug UART, the boot
log will be output during
boot up. If unused, keep
them open.
If unused, keep them
open.
If unused, keep open,
or else pull them up
via1KΩ resistors to the
VDD_EXT.
If unused, please keep
them open.
If unused, please keep
them open.
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