User guide

CM52 Integrators’ Manual
CM52 Integrators’ Manual
WI_DEV_CM52_UGD_001-001
Page 19 of 53
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
2.3.2 System Connector Interface Pinout
Pin Signal Description Dir Pin Type Alternate
Function
Dir Pin
Type
1 Reserved TIMEMARK
1
O CMOS
2 VREF Logic Voltage O Reference
3 Reserved GPS Fix
1
O CMOS
4 VRTC Supply pin for RTC
2
I Power GPS VRTC
1
I Supply
5 GND Chassis Ground Ground
6 GND Chassis Ground Ground
7 AFMS Analog Audio from Wireless CPU
®
O Audio
8 GND Chassis Ground Ground
9 AGND Analog Reference Audio
10 ATMS Analog Audio to Wireless CPU
®
I Audio
11 Reserved UART3_RX
1
I CMOS
12 MODULE_PWR_EN_B Switches the Wireless CPU
®
on/off
(hardware-wise), active low
I
13 Reserved UART3_TX
1
O CMOS
14 Reserved
15 HW_SD Hardware shutdown I/O
16 Reserved
17 PCMCLK PCM Clock output O CMOS
18 PCMSYNC PCM Frame sync O CMOS
19 PCMULD PCM Voice input to Wireless CPU
®
I CMOS
20 PCMDLD PCM Voice output from Wireless CPU
®
O CMOS
21 GND Chassis Ground Ground
22 GND Chassis Ground Ground
23 DCD / VPPFLASH Data Carrier Detect & Flash programming
voltage input
O / I CMOS /
Power
24 Reserved O RINGER O CMOS
1
Default function if GPS option on board
2
Default function if RTC option on board