Table Of Contents - Wavecom GR64 Application Note

1 Introduction ............................................................................................ 4
1.1 LOGIC INTERFACE VOLTAGE.......................................................................................... 4
2 GPIO vs. Alternate I/O Functions ............................................................. 5
2.1 DEFAULT SETTINGS ....................................................................................................... 5
2.2 AT*GPIO OR ALTERNATE FUNCTION SELECTION ............................................................ 5
3 Using GPIO.............................................................................................. 6
3.1 USING GPIO FOR CONTROL ........................................................................................... 6
3.2 USING GPIO FOR MONITORING ...................................................................................... 7
4 Using Alternate I/O functions.................................................................. 8
4.1 UART 1 MODEM CONTROL ............................................................................................ 8
4.2 ACTIVITY INDICATION................................................................................................... 9
4.3 SD/MMC SUPPORT ........................................................................................................ 9
4.4 I2C SUPPORT .............................................................................................................. 10
Appendix A -- I/O Pins by GR/GS64 Device Type........................................ 11
APPLICATION NOTE
GR/GS64 General Purpose and
Alternate Function I/O
Page: 3/13

Table of Contents

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