HONEYWELL 90088-A-9001模块，90088-A-9001中文PDF说明书在线阅读

如果BBRAM中的数据丢失，请使用背板标签上的数字将其恢复到连接器P2。以太网收发器接口位于MVME172LX主机上板，工业标准连接器位于其前面板上82596CA的支持功能由MC2chip提供。提到82596CA用户指南和MVME172 VME嵌入式控制器程序员参考指南有关详细的编程信息。SCSI接口MVME172LX通过行业标准SCSI总线。

HONEYWELL 90088-A-9001模块这些子系统可能包括硬件和软盘驱动器、流式磁带驱动器和其他大容量存储设备。SCSI接口使用NCR 53C710 SCSI I/O实现控制器。53C710的支持功能由MC2chip提供。提到NCR 53C710用户指南和MVME172 VME中的MC2chip嵌入式控制器程序员参考指南编程信息。SCSI终止SCSI总线必须在两端正确终止，这一点很重要。MVME172LX主板为SCSI总线提供终端。这个SCSI终端由标头J12上的跳线启用/禁用。如果SCSI总线结束于MVME172LX，必须在总线之间安装跳线J12针脚1和2。MVME172LX前面板监视器上的保险丝LED（DS2的一部分）除了LAN电源和工业功率；当所有保险丝断开时，保险丝LED亮起操作的保险丝是固态设备，在短路时复位远离的。由于SCSI总线上的任何设备都可以提供TERMPWR，因此保险丝LED不能直接指示保险丝的状况。当地资源MVME172LX包含许多用于本地处理器的资源。这些包括滴答计时器、软件可编程硬件中断和看门狗计时器和本地总线超时。可编程滴答定时器中提供了四个分辨率为1µs的32位可编程滴答计时器MC2chip和两个32位可编程滴答定时器在可选VMEchip2。滴答定时器可编程为生成处理器的周期性中断。参考VMEchip2和MC2chip《MVME172 VME嵌入式控制器程序员参考》编程信息指南

If the data in the BBRAM is lost, use the number on the label on backplane

connector P2 to restore it.

The Ethernet transceiver interface is located on the MVME172LX main

board, and the industry standard connector is located on its front panel

Support functions for the 82596CA are provided by the MC2chip. Refer to

the 82596CA user’s guide and to the MC2chip description in the

MVME172 VME Embedded Controller Programmer’s Reference Guide

for detailed programming information.

SCSI Interface

The MVME172LX supports mass storage subsystems through the

industry-standard SCSI bus. These subsystems may include hard and

floppy disk drives, streaming tape drives, and other mass storage devices.

The SCSI interface is implemented using the NCR 53C710 SCSI I/O

controller. Support functions for the 53C710 are provided by the MC2chip. Refer to

the NCR 53C710 user’s guide and to the MC2chip in the MVME172 VME

Embedded Controller Programmer’s Reference Guide for detailed

programming information.

SCSI Termination

It is important that the SCSI bus be properly terminated at both ends.

The MVME172LX main board provides terminators for the SCSI bus. The

SCSI terminators are enabled/disabled by a jumper on header J12. If the

SCSI bus ends at the MVME172LX, a jumper must be installed between

J12 pins 1 and 2.

The FUSES LED (part of DS2) on the MVME172LX front panel monitors

the SCSI bus TERMPWR signal in addition to LAN power and

IndustryPack power; the FUSES LED illuminates when all fuses are

operational. The fuses are solid-state devices that reset when the short is

removed.

Because any device on the SCSI bus can provide TERMPWR, the FUSES

LED does not directly indicate the condition of the fuse.

Local Resources

The MVME172LX includes many resources for the local processor. These

include tick timers, software-programmable hardware interrupts, a

watchdog timer, and a local bus timeout.

Programmable Tick Timers

Four 32-bit programmable tick timers with 1µs resolution are provided in

the MC2chip and two 32-bit programmable tick timers are provided in the

optional VMEchip2. The tick timers may be programmed to generate

periodic interrupts to the processor. Refer to the VMEchip2 and MC2chip

in the MVME172 VME Embedded Controller Programmer’s Reference

Guide for detailed programming information