HONEYWELL 90088-A-9001模塊，90088-A-9001中文PDF說(shuō)明書(shū)在線(xiàn)閱讀
如果BBRAM中的數據丟失，請使用背板標簽上的數字將其恢復到連接器P2。以太網(wǎng)收發(fā)器接口位于MVME172LX主機上板，工業(yè)標準連接器位于其前面板上82596CA的支持功能由MC2chip提供。提到82596CA用戶(hù)指南和MVME172 VME嵌入式控制器程序員參考指南有關(guān)詳細的編程信息。SCSI接口MVME172LX通過(guò)行業(yè)標準SCSI總線(xiàn)。
HONEYWELL 90088-A-9001模塊這些子系統可能包括硬件和軟盤(pán)驅動(dòng)器、流式磁帶驅動(dòng)器和其他大容量存儲設備。SCSI接口使用NCR 53C710 SCSI I/O實(shí)現控制器。53C710的支持功能由MC2chip提供。提到NCR 53C710用戶(hù)指南和MVME172 VME中的MC2chip嵌入式控制器程序員參考指南編程信息。SCSI終止SCSI總線(xiàn)必須在兩端正確終止，這一點(diǎn)很重要。MVME172LX主板為SCSI總線(xiàn)提供終端。這個(gè)SCSI終端由標頭J12上的跳線(xiàn)啟用/禁用。如果SCSI總線(xiàn)結束于MVME172LX，必須在總線(xiàn)之間安裝跳線(xiàn)J12針腳1和2。MVME172LX前面板監視器上的保險絲LED（DS2的一部分）除了LAN電源和工業(yè)功率；當所有保險絲斷開(kāi)時(shí)，保險絲LED亮起操作的保險絲是固態(tài)設備，在短路時(shí)復位遠離的。由于SCSI總線(xiàn)上的任何設備都可以提供TERMPWR，因此保險絲LED不能直接指示保險絲的狀況。當地資源MVME172LX包含許多用于本地處理器的資源。這些包括滴答計時(shí)器、軟件可編程硬件中斷和看門(mén)狗計時(shí)器和本地總線(xiàn)超時(shí)?？删幊痰未鸲〞r(shí)器中提供了四個(gè)分辨率為1μs的32位可編程滴答計時(shí)器MC2chip和兩個(gè)32位可編程滴答定時(shí)器在可選VMEchip2。滴答定時(shí)器可編程為生成處理器的周期性中斷。參考VMEchip2和MC2chip《MVME172 VME嵌入式控制器程序員參考》編程信息指南
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
