RELIANCE DSA-MTR-60D數字量控制板卡
1.產(chǎn) 品 介 紹
品牌：RELIANCE
型號說(shuō)明：RELIANCE DSA-MTR-60D數字量控制板卡
優(yōu)勢：供應進(jìn)口原裝正品，專(zhuān)業(yè)停產(chǎn)配件。
公司主營(yíng)特點(diǎn)：主營(yíng)產(chǎn)品各種模塊/卡件，控制器，觸摸屏，伺服驅動(dòng)器。
2.產(chǎn) 品 詳 情 資 料：
數據總線(xiàn)結構RELIANCE DSA-MTR-60D嵌入式控制器上的本地數據總線(xiàn)是基于MC68040總線(xiàn)的32位同步總線(xiàn)，支持突發(fā)傳輸和窺探。各種本地總線(xiàn)主設備和從設備使用本地總線(xiàn)進(jìn)行通信。本地總線(xiàn)由優(yōu)先級類(lèi)型仲裁器仲裁。本地總線(xiàn)主機的優(yōu)先級從高到低依次為：82596CA LAN、Industry Pack DMA、53C710 SCSI、VMEbus和MPU。一般來(lái)說(shuō)，任何主機都可以訪(fǎng)問(wèn)任何從機；然而，RELIANCE DSA-MTR-60D并非所有組合都能通過(guò)常識測試。請參閱《MVME162FX嵌入式控制器程序員參考指南》和每個(gè)設備的用戶(hù)指南，以確定其端口大小、數據總線(xiàn)連接以及訪(fǎng)問(wèn)設備時(shí)適用的任何限制。MC68040或MC68LC040 MPU在MVME162FX嵌入式控制器上使用MC680400或MC68LC 040處理器。MC68040具有片上指令和數據緩存、可選的高驅動(dòng)器I/O緩沖區和浮點(diǎn)處理器。兩個(gè)處理器之間的主要區別在于MC68040具有浮點(diǎn)協(xié)處理器。MC68040支持多主應用程序中的高速緩存一致性，具有專(zhuān)用的片上總線(xiàn)窺探邏輯。有關(guān)更多信息，請參閱MC68040微處理器用戶(hù)手冊。RELIANCE DSA-MTR-60D
Data Bus Structure The local data bus on the RELIANCE DSA-MTR-60DEmbedded Controller is a 32-bit synchronous bus based on the MC68040 bus, and which supports burst transfers and snooping. The various local bus master and slave devices use the local bus to communicate. The local bus is arbitrated by a priority type arbiter. The priority of the local bus masters from highest to lowest is: 82596CA LAN, Industry Pack DMA, 53C710 SCSI, VMEbus, and MPU. Generally speaking, any master can access any slave; however, not all combinations pass the common sense test. Refer to the MVME162FX Embedded Controller Programmer’s RELIANCE DSA-MTR-60DReference Guide and to the user’s guide for each device to determine its port size, data bus connection, and any restrictions that apply when accessing the device. MC68040 or MC68LC040 MPU The MC68040 or MC68LC040 processor is used on the MVME162FX Embedded Controller. The MC68040 has on-chip instruction and data caches, optional high drive I/O buffers, and a floating point processor. The major difference between the two processors is that the MC68040 has a floating point coprocessor. The MC68040 supports cache coherency in multi-master applications with dedicated on-chip bus snooping logic. Refer to the MC68040 Microprocessor User’s Manual for more information.RELIANCE DSA-MTR-60D
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