Shanghai SIMCom Wireless Solutions Limited SIM7000G ユーザーズマニュアル

SIM7000 _Hardware Design _V1.00

SIM_DATA

31

I/O,PU

SIM Card data I/O, which has

been pulled up via a 10KR

resistor to SIM_VDD

internally. Do not pull it up or

down externally.

All lines of SIM
interface should be
protected against ESD.

SIM_RST

33

DO

SIM Reset

SIM_CLK

32

DO

SIM clock

SIM_VDD

30

PO

Power output for SIM card, its

output Voltage depends on SIM

card type automatically. Its

output current is up to 50mA.

SIM_DET

34

DI

SIM card detecting input

If used, keep a 10k Ω
resistor pulling up to
the VDD_EXT

USB_VBUS

24

DI,PD

Valid USB detection input with

3.5~5.25V detection voltage

USB_DP

27

I/O

Positive line of the differential,

bi-directional USB signal.

USB_DM

28

I/O

Negative line of the differential,

bi-directional USB signal.

UART interface
DTR

3

DI,PU

DTE get ready

If unused, keep them
open.

RI

4

DOH

Ring Indicator

DCD

5

DOH

Carrier detects

CTS

7

DOH

Clear to Send

RTS

8

DI,PU

Request to send

TXD

9

DOH

Transmit Data

RXD

10

DI,PU

Receive Data

I2C_SDA

37

I/O

I2C clock output

If unused, keep open,
or else pull them up
via 2.2KΩ resistors to
the VDD_EXT.

I2C_SCL

38

DO

I2C data input/output

PCM interface
PCM_CLK

11

DO

PCM data bit clock.

If unused, please keep
them open.

PCM_SYNC

12

DO

PCM data frame sync signal.

PCM_DIN

13

DI

PCM data input.

PCM_DOUT

14

DO

PCM data output.