Introduction; Asynchronous Serial Ports; Table C-1. Mvme1600-001/Mvme1600-011 Serial Ports - Motorola MVME1603 Installation And Use Manual

Introduction

As described in previous chapters of this manual, the
MVME1603/MVME1604 serial communications interface has four ports.
Two of them are combined synchronous/asynchronous ports; the other two
are asynchronous only. Between the MVME1600-001 and MVME1600-
011 base boards, some differences exist in the implementation of the four
ports. The differences are summarized in the following table.
MVME1600-001
MVME1600-011

Asynchronous Serial Ports

The MVME1603/MVME1604 uses a PC87303 ISASIO chip from
National Semiconductor to implement the two asynchronous serial ports
(in addition to the disk drive controller, parallel I/O, and keyboard/mouse
interface).
CSerial Interconnections

Table C-1. MVME1600-001/MVME1600-011 Serial Ports

Base Board
2 asynchronous ports (EIA-232-D DTE) via P2 and
MVME760 transition module
2 synchronous/asynchronous ports (EIA-232-D or EIA-
530 DCE/DTE) via P2 and MVME760 transition module
2 asynchronous ports (EIA-232-D DCE/DTE) via P2 and
MVME712M transition module
2 synchronous/asynchronous ports (EIA-232-D
DCE/DTE) via P2 and MVME712M or via front panel.
Front panel I/O (DTE only) gives full sync/async
functionality on both ports; MVME712M I/O makes port
3 async only.
Serial Interface
C
C-1