HONEYWELL 05704-A-014工控备件

要从模块中卸下电池，请小心地从插座安装新电池之前，请确保电池针脚清洁。笔记检查电池极性，然后将电池压入插座。当电池在插座中，无需焊接。EPROM和闪存MVME172LX可订购2MB闪存和两个EPROM插槽准备好安装EPROM闪存是单个Intel 28F016SA设备以2Mb x 8配置组织。EPROM位置是标准的JEDEC 32针DIP插座，可容纳三个可选跳线密度（256 Kb x 8；512 Kb x 8；1 Mb x8）。

HONEYWELL 05704-A-014工控备件跳线设置（GPI4，引脚J21上的9-10），允许从闪存中提取重置代码（已安装GPI4）或来自EPROM（已卸下GPI4）。电池备份RAM和时钟MVME172LX上使用了M48T58 RAM和时钟芯片。这个芯片提供时钟、振荡器、晶体、电源故障检测、，内存写保护、8KB RAM和一个28针电池包裹时钟提供秒、分、时、日、日、月、，以及BCD 24小时格式的年份。28、29（闰年）和自动生成30天月。系统不会产生中断时钟虽然M48T58是一个8位设备，但MC2chip支持对M48T58的8位、16位和32位访问。参考至MVME172 VME嵌入式控制器中的MC2chip有关详细信息，请参阅《程序员参考指南》和M48T58数据表编程和电池寿命信息。VMEbus接口和VMEchip2VMEchip2 ASIC提供本地总线到VMEbus接口VMEbus到本地总线接口，以及本地VMEbus。VMEchip2还提供VMEbus系统控制器功能。请参阅MVME172中的VMEchip2说明VME嵌入式控制器程序员参考指南编程信息。注意，未使用VMEchip2中的中止开关逻辑。GPIVMEchip2的输入位于$FFF40088位7-0，不包括习惯于中止开关中断集成在MC2chip ASIC中位置$FFF42043。GPI输入集成到MC2chip中位于位置$FFF4202C位23-16的ASIC。输入/输出接口MVME172LX为许多系统应用提供板载输入/输出。输入/输出功能包括串行端口和可选的IP接口模块、LAN以太网收发器和SCSI大容量存储设备

To remove the battery from the module, carefully pull the battery from the

socket.

Before installing a new battery, ensure that the battery pins are clean. Note

the battery polarity and press the battery into the socket. When the battery

is in the socket, no soldering is required.

EPROM and Flash Memory

The MVME172LX may be ordered with 2MB of Flash memory and two

EPROM sockets ready for the installation of the EPROMs, which may be

ordered separately. Flash memory is a single Intel 28F016SA device

organized in a 2Mb x 8 configuration. The EPROM locations are standard

JEDEC 32-pin DIP sockets that accommodate three jumper-selectable

densities (256 Kb x 8; 512 Kb x 8; 1 Mb x8). A jumper setting (GPI4, pins

9-10 on J21), allows reset code to be fetched either from Flash memory

(GPI4 installed) or from EPROMs (GPI4 removed).Battery Backed Up RAM and Clock

An M48T58 RAM and clock chip is used on the MVME172LX. This chip

provides a time-of-day clock, oscillator, crystal, power fail detection,

memory write protection, 8KB of RAM, and a battery in one 28-pin

package. The clock provides seconds, minutes, hours, day, date, month,

and year in BCD 24-hour format. Corrections for 28-, 29- (leap year), and

30-day months are automatically made. No interrupts are generated by the

clock. Although the M48T58 is an 8-bit device, the interface provided by

the MC2chip supports 8-, 16-, and 32-bit accesses to the M48T58. Refer

to the MC2chip in the MVME172 VME Embedded Controller

Programmer’s Reference Guide and to the M48T58 data sheet for detailed

programming and battery life information.

VMEbus Interface and VMEchip2

The VMEchip2 ASIC provides the local-bus-to-VMEbus interface, the

VMEbus-to-local-bus interface, and the DMA controller functions of the

local VMEbus. The VMEchip2 also provides the VMEbus system

controller functions. Refer to the VMEchip2 description in the MVME172

VME Embedded Controller Programmer’s Reference Guide for detailed

programming information. Note that the Abort switch logic in the VMEchip2 is not used. The GPI

inputs to the VMEchip2 which are located at $FFF40088 bits 7-0 are not

used. The Abort switch interrupt is integrated into the MC2chip ASIC at

location $FFF42043. The GPI inputs are integrated into the MC2chip

ASIC at location $FFF4202C bits 23-16.

I/O Interfaces

The MVME172LX provides onboard I/O for many system applications.

The I/O functions include serial ports and optional interfaces for IP

modules, LAN Ethernet transceivers, and SCSI mass storage devices