System Connector Interface Pinout
2.3.2
Pin
Signal
1
Reserved
2
VREF
3
Reserved
4
VRTC
5
GND
6
GND
7
AFMS
8
GND
9
AGND
10
ATMS
11
Reserved
12
MODULE_PWR_EN_B
13
Reserved
14
Reserved
15
HW_SD
16
Reserved
17
PCMCLK
18
PCMSYNC
19
PCMULD
20
PCMDLD
21
GND
22
GND
23
DCD / VPPFLASH
24
Reserved
1
Default function if GPS option on board
2
Default function if RTC option on board
CM52 Integrators' Manual
WI_DEV_CM52_UGD_001-001
Page 19 of 53
Description
Logic Voltage
2
Supply pin for RTC
Chassis Ground
Chassis Ground
Analog Audio from Wireless CPU
Chassis Ground
Analog Reference
®
Analog Audio to Wireless CPU
®
Switches the Wireless CPU
on/off
(hardware-wise), active low
Hardware shutdown
PCM Clock output
PCM Frame sync
PCM Voice input to Wireless CPU
PCM Voice output from Wireless CPU
Chassis Ground
Chassis Ground
Data Carrier Detect & Flash programming
voltage input
This document is the sole and exclusive property of WAVECOM. Not to be distributed or divulged without prior written agreement.
Ce document est la propriété exclusive de WAVECOM. Il ne peut être communiqué ou divulgué à des tiers sans son autorisation préalable
Dir
Pin Type
O
Reference
I
Power
Ground
Ground
®
O
Audio
Ground
Audio
I
Audio
I
I/O
O
CMOS
O
CMOS
®
I
CMOS
®
O
CMOS
Ground
Ground
O / I
CMOS /
Power
O
CM52 Integrators' Manual
Alternate
Dir
Pin
Function
Type
1
TIMEMARK
O
CMOS
1
GPS Fix
O
CMOS
1
GPS VRTC
I
Supply
1
UART3_RX
I
CMOS
1
UART3_TX
O
CMOS
RINGER
O
CMOS
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