Sierra Wireless AirLink FXT Series Guia do Utilizador descarregar pdf (Página 41)

WA_DEV_FEX20_UGD_002 Rev 004 March 08, 2011 41

Fastrack Xtend User Guide

Interfaces

5.1.2.1.1. RS232 Implementation

The following subsections describe how the RS232 serial link can be implemented to suit different

designs.

5.1.2.1.1.1. 5-wire Serial Interface RS232 Implementation

The signals used in this interface are as follows:

 CT103/TXD

 CT104/RXD

 CT105/RTS

 CT106/CTS

 CT108-2/DTR

Note: The CT108-2/DTR signal must be managed following the V24 protocol signaling if the Sleep Idle

Mode and Serial Port Auto Shut Down feature are to be used.

Figure 17. V24 Serial Link Implementation for a 5-wire UART

5.1.2.1.1.2. 4-wire Serial Interface RS232 Implementation

The signals used in this interface are as follows:

 CT103/TXD

 CT104/RXD

 CT105/RTS

 CT106/CTS

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