MVME177-015
VMEbus接口
可选的VMEchip2 ASIC是MVME162的VMEbus接口。
（此选项是出厂版本，不能添加到字段中。）VMEchip2
功能包括：
❏ 两个可编程32位时钟
❏ 可编程看门狗定时器
❏ 用于主接口和从接口的可编程地图解码器
❏ VMEbus与本地总线DMA控制器之间的连接
❏ VMEbus与本地总线之间的非DMA编程访问接口
❏ VMEbus中断器
❏ VMEbus系统控制器
❏ VMEbus中断处理程序
❏ VMEbus请求程序
处理器到VMEbus的传输可以是D8、D16或D32。VMEchip2 DMA
但是，到VMEbus的传输可以是D16、D32、D16/BLT、D32/BLT或
D64/MBLT。
无VMEbus接口选项
如果需要，MVME162可以在没有
VMEbus接口（即，没有可选的VMEchip2）。联系您当地的
摩托罗拉销售办事处提供订购信息。
MCchip公司
内存控制器（MCchip）ASIC提供四个32位可编程
时钟和LAN芯片、SCSI芯片、串行端口芯片、，
BBRAM、PROM/闪存、SRAM、DRAM、复位控制、看门狗定时器、访问
定时器和中断逻辑。
闪存和EPROM
MVME162配备1MB闪存和EPROM插槽
准备安装EPROM，可单独订购。
闪存是以1Mbit x 8配置组织的单个设备
或以256Kbit x 8配置组织的四个设备。EPROM位置
是一种标准的JEDEC 32针PLCC，具有4 Mbit密度（128 Kbit x 8；
一般信息
1-8 MVME162嵌入式控制器用户手册
1.
256 Kbit x 8；512 Kbit x 8；1 Mbit x 8）组织为512Kbit x 8设备。A.
跳线允许从闪存或从
EPROM。

VMEbus Interface The optional VMEchip2 ASIC is the VMEbus interface for the MVME162. (This option is a factory build and cannot be added in the field.) VMEchip2 features include: ❏ Two programmable 32-bit tick timers ❏ A programmable watchdog timer ❏ Programmable map decoders for the master and slave interfaces ❏ A VMEbus to/from local bus DMA controller ❏ A VMEbus to/from local bus non-DMA programmed access interface ❏ A VMEbus interrupter ❏ A VMEbus system controller ❏ A VMEbus interrupt handler ❏ A VMEbus requester Processor-to-VMEbus transfers can be D8, D16, or D32. VMEchip2 DMA transfers to the VMEbus, however, can be D16, D32, D16/BLT, D32/BLT, or D64/MBLT. No-VMEbus-Interface Option If desired, the MVME162 can function as an embedded controller without a VMEbus interface (i.e., without the optional VMEchip2). Contact your local Motorola sales office for ordering information. MCchip The Memory Controller (MCchip) ASIC provides four 32-bit programmable tick timers and an interface to the LAN chip, SCSI chip, serial port chip, BBRAM, PROM/Flash, SRAM, DRAM, reset control, watchdog timers, access timers, and interrupter logic. Flash Memory and EPROM The MVME162 is equipped with 1MB of Flash memory and an EPROM socket ready for the installation of the EPROM, which may be ordered separately. Flash memory is either a single device organized in a 1Mbit x 8 configuration or four devices organized in a 256Kbit x 8 configuration. The EPROM location is a standard JEDEC 32-pin PLCC capable of four Mbit densities (128 Kbit x 8; General Information 1-8 MVME162 Embedded Controller User’s Manual 1 256 Kbit x 8; 512 Kbit x 8; 1 Mbit x 8) organized as a 512Kbit x 8 device. A jumper allows reset code to be fetched either from Flash memory or from the EPROM.