Description
- Eight Independently Programmable RS-232C or RS-422A Serial Ports
- 10 MHz 68000 CPU
- Xycom’s Intelligent I/O Kernel
- Xycom’s InterProcessor Communications Protocol
- On-Board Firmware for Record or Character I/O
- Programmable Baud Rates From 50 to 19.2K Baud
The Xycom XCME-428 Intelligent Asynchronous Serial Communication Module provides VMEbus Systems with eight serial ports, compatibly with RS-232C, RS-422A or TTL lines. The XVME-428 contains Xycom’s 68000 based intelligent I/O kernel. This kernel, along with the on-board firmware, performs many of the time consuming tasks associated with serial I/O relieving the host processor of the burden of executing the tasks.
The Xycom Automation XVME-400 and XVME-401Quad Serial 1/0 Modules are single-high, single-wideVMEbus modules that provide a VMEbus system withfour serial communication channels. The XVME-400and XVME-401 differ only in their communicationinterface: the XVME-400 provides four RS-232C serialports, while the XVME-401 provides fourRS-422ARS-485 serial ports.
Both modules contain two Z8530 Serial Communica-tion Controller (SCC) chips which provide a variety ofcommunication modes, including asynchronous, byte-synchronous, and bit-oriented protocols. Each channelis independently programmable and has its own baudrate generator and modem signal controls.The VMEbus interface directly maps the Z8530 SCCchips into the short //O address space, starting on ajumper-selected 1 Kbyte boundary. The modules canalso be jumpered to generate an interrupt on any oftheseven VMEbus interrupt levels. The two Z8530 SCCchips can generate a total of 16 different interruptvectors.
For applications not allowing //O to be routed out thefront panel, the XVME-490 and XVME-49l offer thesame functionality as the XVME-400 and XVME-401In a 6U form factor, the lO is routed via the VMEbusP2 connector on the back of the board.
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