SimCom SIM7000 Hardware Design page 19

PCM_SYNC 12
PCM_DIN 13
PCM_DOUT 14
GPIO
NETLIGHT 52
STATUS 66
GPIO0 50
GPIO1 49
GPIO2 67
GPIO3 68
GPIO4 48
RF interface
GNSS_ANT 53
RF_ANT 60
Other interface
BOOT_CFG 6
MDM_LOG_T
23
X
ADC 25
19、20、
21、 22、
26、35、
NC 36、40、
41、 42、
43、 44、
47、 51、
Note: Please reserve a test point for BOOT_CFG, VDD_EXT and MDM_LOG_TX. If
there is no USB connector, please also reserve a test point for USB_VBUS, USB_DP,
and USB_DM for Firmware upgrade.
SIM7000 _Hardware Design _V1.04
DO PCM data frame sync signal.
DI PCM data input.
DO PCM data output.
LED control output as network
DO
status indication.
Operating status output.
High level: Power on and
DO
firmware ready
Low level: Power off
Default: GPIO
IO Optional: UART3_TXD in
DAM application
Default: GPIO
IO Optional: UART3_RXD in
DAM application
IO GPIO
IO GPIO
IO GPIO
AI GNSS antenna soldering pad
AIO MAIN antenna soldering pad
If it needs to enter into forced
USB download mode, it must
be pulling up this pin to
DI,PD
VDD_EXT before press the
PWRKEY.
If it needs to boot up normally,
please keep this pin open.
Module log output for SW
DO
debug. (only used for platform)
Analog-digital converter input.
AI
voltage range: 0～VBAT.
No connection.
Smart Machine Smart Decision
them open.
If unused, keep them
open.
Reserve a test points
for it. Keep it open.
DO NOT PULL UP
DURING NORMAL
POWER UP!
Reserve a test point for
it.
If unused, keep them
open.
Keep it open
2018-1-31