CLM920_RC3(RV3 RE3)LCC Series CAT1 Module Hardware Manual
Shanghai YUGE Information Technology Co., Ltd.
- 20 -
transmission
when not in use
USIM interface
Pin Definition
IO
Functional description
Remarks
13
SIM_PRESENCE DI
USIM card hot swap detection
Internal 10K
resistor pull-up
14
USIM_VDD
PO
USIM card power supply
1.8V or 3V
15
USIM_DATA
IO
USIM card data signal cable
16
USIM_CLK
DO
USIM card clock signal line
17
USIM_RST
DO
USIM card reset signal cable
Module power on and off
Pin
Definition
IO
Functional description
Remarks
20
RESET_N
DI
Module reset signal, internal
10K pull-up
1.8V voltage domain
21
PWRKEY
DI
Switch signal
Default low level
boot
PCM interface
Pin
Definition
IO
Functional description
Remarks
24
PCM_IN
DI
PCM receive data
1.8V voltage domain
25
PCM_OUT
DO
PCM send data
1.8V voltage domain
26
PCM_SYNC
IO
PCM frame synchronization
signal
1.8V voltage domain
27
PCM_CLK
IO
PCM clock pulse
1.8V voltage domain
SDIO interface
Pin
Definition
IO
Functional description
Remarks
23
SD_DET
DI
SD card detection
28
SDC_DATA3
DI
SD card SDIO bus DATA3
1.8V / 2.8V voltage
domain
29
SDC_DATA2
IO
SD card SDIO bus DATA2
1.8V / 2.8V voltage
domain
30
SDC_DATA1
IO
SD card SDIO bus DATA1
1.8V / 2.8V voltage
domain
31
SDC_DATA0
IO
SD card SDIO bus DATA0
1.8V / 2.8V voltage
