DT602轉(zhuǎn)速計,ABB產(chǎn)品顏色
一般說明MVME2603/2604是一種配備VME模塊的單板計算機使用PowerPC系列微處理器。MVME2603配備PowerPC 603微處理器；MVME2604具有PowerPC 604。256KB二級緩存（二級二級緩存）可作為所有版本上的選項。如功能部分所示，MVME2603/2604提供了許多計算機系統(tǒng)中需要的標準特性，如同步異步串行端口、并行端口、引導ROM和DRAM、SCSI、，以太網(wǎng)，支持外部磁盤驅(qū)動器以及鍵盤和鼠標支持單槽VME包。
DT602轉(zhuǎn)速計其靈活的夾層該架構(gòu)允許相對輕松地升級內(nèi)存和功能。MVME2603/2604系列的一個關(guān)鍵特性是PCI（外圍設備組件互連）總線。除了車載本地總線外圍設備，PCI總線支持行業(yè)標準的夾層接口，IEEE P1386.1 PMC（PCI夾層卡）。PMC模塊提供通過FDDI（光纖）進行輸入/輸出擴展的各種可能性分布式數(shù)據(jù)接口），ATM（異步傳輸模式），圖形、以太網(wǎng)或SCSI端口?；逯С諴MC前端面板輸入/輸出。還可以通過PMC進行額外擴展承載板。SCSI接口MVME2603/2604 VME模塊支持大容量存儲子系統(tǒng)通過行業(yè)標準SCSI總線。這些子系統(tǒng)可能包括硬盤和軟盤驅(qū)動器、流式磁帶驅(qū)動器和其他大容量存儲設備。SCSI接口使用Symbios 53C825A實現(xiàn)SCSI輸入/輸出控制器，時鐘速度為40 MHz。SCSI輸入/輸出控制器直接連接到PCI本地總線。MVME2603/2604通過P2連接器將其SCSI線路路由到MVME712M過渡模塊（如第頁圖1-21所示1-47). SCSI控制線路具有過濾網(wǎng)絡，以將影響降至最低P2處的VMEbus信號噪聲。
SCSI總線在支持VME64擴展的系統(tǒng)中寬16位（即配備5排160針VME背板連接器的設備）。
SCSI總線在不支持擴大請參閱附錄D中列出的MVME712M用戶手冊，SCSI連接器引腳分配的相關(guān)文檔用于過渡模塊。請參閱Symbios 53C825A數(shù)據(jù)手冊有關(guān)詳細的編程信息，請參見附錄D，相關(guān)文檔
General Description
The MVME2603/2604 is a VME module single board computer equipped
with a PowerPC Series microprocessor. The MVME2603 is equipped with
a PowerPC 603 microprocessor; the MVME2604 has a PowerPC 604.
256KB L2 cache (level 2 secondary cache memory) is available as an
option on all versions.
As shown in the Features section, The MVME2603/2604 offers many
standard features desirable in a computer system—such as synchronous
and asynchronous serial ports, parallel port, boot ROM and DRAM, SCSI,
Ethernet, support for an external disk drive, and keyboard and mouse
support—in a single-slot VME package. Its flexible mezzanine
architecture allows relatively easy upgrades in memory and functionality.
A key feature of the MVME2603/2604 family is the PCI (Peripheral
Component Interconnect) bus. In addition to the on-board local bus
peripherals, the PCI bus supports an industry-standard mezzanine
interface, IEEE P1386.1 PMC (PCI Mezzanine Card). PMC modules offer
a variety of possibilities for I/O expansion through FDDI (Fiber
Distributed Data Interface), ATM (Asynchronous Transfer Mode),
graphics, Ethernet, or SCSI ports. The base board supports PMC front
panel I/O. There is also provision for additional expansion via a PMC
carrier board.SCSI Interface
The MVME2603/2604 VME module 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 Symbios 53C825A
SCSI I/O controller at a clock speed of 40 MHz. The SCSI I/O controller
connects directly to the PCI local bus.
The MVME2603/2604 routes its SCSI lines through the P2 connector to
the MVME712M transition module (as illustrated in Figure 1-21 on page
1-47). The SCSI control lines have filter networks to minimize the effects
of VMEbus signal noise at P2.
The SCSI bus is 16-bits wide in systems that support the VME64 extension
(that is, those equipped with 5-row, 160-pin VME backplane connectors).
The SCSI bus is 8-bits wide in VME systems that do not support the
extension. Refer to the MVME712M User’s Manual, listed in Appendix D,
Related Documentation, for the pin assignments of the SCSI connectors
used on the transition module. Refer to the Symbios 53C825A data manual
for detailed programming information, also listed in Appendix D, Related
Documentation.
