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MVME177-004
VMEbus接口
可選的VMEchip2 ASIC是MVME162的VMEbus接口。
（此選項是出廠版本，不能添加到字段中。）VMEchip2
功能包括：
? 兩個可編程32位時鐘
? 可編程看門狗定時器
? 用于主接口和從接口的可編程地圖解碼器
? VMEbus與本地總線DMA控制器之間的連接
? VMEbus與本地總線之間的非DMA編程訪問接口
? VMEbus中斷器
? VMEbus系統(tǒng)控制器
? VMEbus中斷處理程序
? VMEbus請求程序
處理器到VMEbus的傳輸可以是D8、D16或D32。VMEchip2 DMA
但是，到VMEbus的傳輸可以是D16、D32、D16/BLT、D32/BLT或
D64/MBLT。
無VMEbus接口選項
如果需要，MVME162可以在沒有
VMEbus接口（即，沒有可選的VMEchip2）。聯(lián)系您當(dāng)?shù)氐?br />摩托羅拉銷售辦事處提供訂購信息。
MCchip公司
內(nèi)存控制器（MCchip）ASIC提供四個32位可編程
時鐘和LAN芯片、SCSI芯片、串行端口芯片、，
BBRAM、PROM/閃存、SRAM、DRAM、復(fù)位控制、看門狗定時器、訪問
定時器和中斷邏輯。
閃存和EPROM
MVME162配備1MB閃存和EPROM插槽
準(zhǔn)備安裝EPROM，可單獨(dú)訂購。
閃存是以1Mbit x 8配置組織的單個設(shè)備
或以256Kbit x 8配置組織的四個設(shè)備。EPROM位置
是一種標(biāo)準(zhǔn)的JEDEC 32針PLCC，具有4 Mbit密度（128 Kbit x 8；
一般信息
1-8 MVME162嵌入式控制器用戶手冊
1.
256 Kbit x 8；512 Kbit x 8；1 Mbit x 8）組織為512Kbit x 8設(shè)備。A.
跳線允許從閃存或從
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.
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