EMERSON VE4036P2控制器
VMEbus桥除了其PC/AT功能之外，VMIVME-7750具有以下VMEbus功能：•完整的六行地址修改器（AM代码）可编程性•VME数据接口，具有独立的硬件字节/字交换，用于主和从访问•支持VME64多路MBLT 64位VMEbus块传输•用户配置中断器•用户配置的中断处理器•系统控制器模式，具有可编程VMEbus仲裁器（支持PRI、SGL和RRS模式）•VMEbus BERR总线错误计时器（软件可编程）•从VMEbus到本地RAM和邮箱寄存器的从属访问•全功能可编程VMEbus请求器（支持ROR、RWD和BCAP模式）•系统控制器自动检测•通过五个单独的保护模式内存窗口完成VMEbus主访问VMIVME-7750支持主配置和从配置中的字节、字和长字的高吞吐量DMA传输。如果不需要Endian转换，VMIC提供了一种特殊的“绕过”模式，可用于进一步提高吞吐量（不适用于字节传输）。
VMEbus Bridge
In addition to its PC/AT functions, the VMIVME-7750 has the following VMEbus
features:
• Complete six-line Address Modifier (AM-Code) programmability
• VME data interface with separate hardware byte/word swapping for master
and slave accesses
• Support for VME64 multiplexed MBLT 64-bit VMEbus block transfers
• User-configured interrupter
• User-configured interrupt handler
• System Controller mode with programmable VMEbus arbiter
(PRI, SGL and RRS modes are supported)
• VMEbus BERR bus error timer (software programmable)
• Slave access from the VMEbus to local RAM and mailbox registers
• Full-featured programmable VMEbus requester
(ROR, RWD and BCAP modes are supported)
• System Controller auto detection
• Complete VMEbus master access through five separate Protected-mode
memory windows
The VMIVME-7750 supports High Throughput DMA transfers of bytes, words and
longwords in both Master and Slave configurations.
If Endian conversion is not needed, VMIC offers a special “Bypass” mode that can be
used to further enhance throughput (not available for byte transfers).
