IS200SRTDH2ACB燃機(jī)通用模塊，GE中文使用說(shuō)明
SCSI接口MVME162通過(guò)工業(yè)標(biāo)準(zhǔn)SCSI總線支持大容量存儲(chǔ)子系統(tǒng)。這些子系統(tǒng)可能包括硬盤(pán)和軟盤(pán)驅(qū)動(dòng)器、流式磁帶驅(qū)動(dòng)器和其他大容量存儲(chǔ)設(shè)備。SCSI接口使用NCR 53C710 SCSI輸入/輸出控制器實(shí)現(xiàn)。NCR 53C710的支持功能由MCchip提供。提到NCR 53C710用戶(hù)指南和MVME162嵌入式控制器詳細(xì)編程信息的程序員參考指南。
IS200SRTDH2ACB燃機(jī)通用模塊提到MVME712-12、MVME712-13、MVME712A、MVME712AM和MVME712B轉(zhuǎn)換模塊和LCP2適配器板用戶(hù)手冊(cè)或MVME712M轉(zhuǎn)換模塊和P2適配器板引腳用戶(hù)手冊(cè)轉(zhuǎn)換模塊SCSI連接器的分配。SCSI終止配置系統(tǒng)的個(gè)人必須確保SCSI總線兩端正確終止。MVME162為P2適配器上的SCSI總線終端提供插槽板或LCP2適配器板。如果SCSI總線終止于適配器板，然后，終端電阻器必須安裝在適配器板上+5V電源向SCSI總線提供TERMPWR信號(hào)和端接電阻器通過(guò)適配器板上的保險(xiǎn)絲。當(dāng)?shù)刭Y源MVME162包括許多用于本地處理器的資源。其中包括滴答定時(shí)器、軟件可編程硬件中斷、看門(mén)狗定時(shí)器、，和本地總線超時(shí)?？删幊痰未鸲〞r(shí)器系統(tǒng)中提供了四個(gè)分辨率為1μs的32位可編程滴答計(jì)時(shí)器可選配置中提供了MCchip和兩個(gè)32位可編程滴答計(jì)時(shí)器VMEchip2。滴答定時(shí)器可編程為生成周期性中斷處理器。請(qǐng)參閱MCchip和VMEchip2說(shuō)明在MVME162嵌入式控制器程序員參考指南中編程信息?？撮T(mén)狗定時(shí)器MCchip和可選VMEchip2中都提供了看門(mén)狗定時(shí)器。計(jì)時(shí)器獨(dú)立但并行運(yùn)行。當(dāng)看門(mén)狗定時(shí)器如果啟用，則必須在編程時(shí)間內(nèi)通過(guò)軟件重置，或他們將暫停。看門(mén)狗定時(shí)器可以編程生成系統(tǒng)復(fù)位信號(hào)、本地復(fù)位信號(hào)或板故障信號(hào)（如果超時(shí)）。參考嵌入MVME162中的VMEchip2和MCchip描述詳細(xì)編程信息的控制器程序員參考指南。
SCSI Interface
The MVME162 supports mass storage subsystems through the industrystandard 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 NCR 53C710 are provided by the MCchip. Refer to
the NCR 53C710 user’s guide and to the MVME162 Embedded Controller
Programmer’s Reference Guide for detailed programming information. Refer to
the MVME712-12, MVME712-13, MVME712A, MVME712AM, and
MVME712B Transition Modules and LCP2 Adapter Board User’s Manual or to the
MVME712M Transition Module and P2 Adapter Board User’s Manual for the pin
assignments of the transition module SCSI connectors.
SCSI Termination
The individual configuring the system must ensure that the SCSI bus is
properly terminated at both ends.
The MVME162 provides sockets for SCSI bus terminators on the P2 adapter
board or the LCP2 adapter board. If the SCSI bus ends at the adapter board,
then termination resistors must be installed on the adapter board. +5V power
to the SCSI bus TERMPWR signal and termination resistors is provided
through a fuse located on the adapter board.
Local Resources
The MVME162 includes many resources for the local processor. These include
tick timers, software programmable hardware interrupts, watchdog timer,
and local bus timeout.Programmable Tick Timers
Four 32-bit programmable tick timers with 1 μs resolution are provided in the
MCchip and two 32-bit programmable tick timers are provided in the optional
VMEchip2. The tick timers can be programmed to generate periodic
interrupts to the processor. Refer to the MCchip and VMEchip2 descriptions
in the MVME162 Embedded Controller Programmer’s Reference Guide for detailed
programming information.
Watchdog Timer
A watchdog timer is provided in both the MCchip and the optional VMEchip2.
The timers operate independently but in parallel. When the watchdog timers
are enabled, they must be reset by software within the programmed time or
they will time out. The watchdog timers can be programmed to generate a
SYSRESET signal, local reset signal, or board fail signal if they time out. Refer
to the VMEchip2 and MCchip descriptions in the MVME162 Embedded
Controller Programmer’s Reference Guide for detailed programming information.
