Specifications

Rev. 1.43

User's Guide

3.9. Four multi-protocols serial ports P7,P8,P9, P10

These four serial ports are provided for user applications

These four ports are available in the front panel on four HD-15 connectors with:

Port SCC1: connector P7

Port SCC2: connector P8

Port SCC3: connector P9

Port SCC4: connector P10

All signals on these connectors are in full-duplex mode.

For Half-duplex mode, please connect externally RX and TX.

Figure 15: Communication ports pinout

Pin Signal Direction Description for RS-232 option Description for RS-422/485/V.35 option

1 GND --- Shield Shield

2 TxD+ Out Transmit Data Transmit Data+

3 TxD- Out n.u. Transmit Data-

4 TxC+ Out Transmit Clock Transmit Clock +

5 TxC- Out n.u. Transmit Clock -

6 RTS Out Request To Send Request To Send

7 GND --- Ground Ground

8 CTS In Clear To Send Clear To Send

9 DTR Out Data Terminal Ready Data Terminal Ready

10 DCD In Data Carrier Detect Data Carrier Detect

11 RxC- In n.u. Receive Clock -

12 RxC+ In Receive Clock Receive Clock +

13 RxD- In n.u. Receive Data-

14 RxD+ In Receive Data Receive Data+

15 DSR Out Data Set Ready: pulled-up Data Set Ready: pulled-up

 This connector accepts standard HD-15 SubD type plug.

Note: In RS-232 mode, all 'n.u.' pins are physically connected to the corresponding RS-485 function,

thus, the RS-232 device must not use or connect these pins.

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