IS200ISBEH2A工控模块卡件
该电缆通常可从ATA-100驱动器制造商处获得。50 2 VMIVME-7750产品手册以太网控制器双网络功能由外部Intel 82559ER以太网控制器和Intel ICH2芯片内部MAC提供。两个以太网控制器都是基于PCI的，并且是软件可配置的。VMIVME-7750支持双10BaseT和100BaseTx以太网。10BaseT基于10BaseT标准的网络使用非屏蔽双绞线，通过允许使用现有电话线路和连接器，为网络提供了经济的解决方案。RJ-45连接器用于10BaseT标准。10BaseT的最大长度为100米。100BaseTxVMIVME-7750还支持100BaseTx以太网。基于100BaseTx标准的网络使用非屏蔽双绞线和RJ-45连接器。100BaseTx的最大长度为100米。LANWorks VMIVME-7750支持使用LANWorks以太网BIOS在LAN1或LAN2上启动。有关远程以太网引导的更多信息，请参阅附录D。51视频图形适配器2视频图形适配器VMIVME-7750上的SVGA端口由带有4兆字节视频DRAM的Intel图形和内存控制器集线器（GMCH）芯片控制。GMCH的硬件和BIOS兼容行业EGA和SVGA标准，支持VESA高分辨率和扩展视频模式。表3-5显示了GMCH视频控制器支持的图形视频模式。并非所有SVGA监视器都支持分辨率和刷新率超过640 x 480（85 Hz）。不要试图将显示器驱动到超出其能力的分辨率或刷新率。表2-7支持的图形视频分辨率屏幕分辨率最大颜色最大刷新率（Hz）640 x 480 16 M 85 800 x 600 16 M 85 1024 x 768 16 M 85 1280 x 1024 16 M 85 1600 x 900 64 K 85 1600 x 1200 256 75 52 2 VMIVME-7750产品手册通用串行总线VMIVME-7720在前面板上提供双通用串行总线（USB）连接。车载USB控制器完全支持标准USB接口。USB主机控制器通过处理和调度数据结构在系统存储器和USB之间移动数据。控制器执行计划列表，并向系统报告状态。注意：VMIVME-7750的默认CMOS设置禁用USB功能。这为实时系统提供了更多的中断和更少的中断延迟。如果启用了USB，用户必须知道中断共享和延迟将受到影响。53章嵌入式PC/RTOS功能内容VMEbus Bridge VMIVME-7750具有超出典型台式计算机系统的额外功能。该单元提供四个软件控制的通用计时器以及一个可编程看门狗计时器，用于同步和控制嵌入式应用程序中的多个事件。VMIVME-7750还提供了可启动的闪存系统和32 KB的非易失性SRAM。此外，VMIVME-7750支持嵌入式智能VME网桥，以允许与最苛刻的VME应用程序兼容。这些特性使该装置成为嵌入式应用的理想选择，特别是在无法使用标准硬盘驱动器和软盘驱动器的情况下。VMIVME-7750还通过集成这些功能的专用电路来支持I2C。3 54 3 VMIVME-7750产品手册VMEbus Bridge除了其PC/AT功能外，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）。
This cable is typically available from the ATA-100 drive manufacturer. 50 2 VMIVME-7750 Product Manual Ethernet Controllers The dual network capability is provided by an external Intel 82559ER Ethernet Controller and a MAC internal to the Intel ICH2 chip. Both Ethernet controllers are PCI-based and are software configurable. The VMIVME-7750 supports dual 10BaseT and 100BaseTx Ethernet. 10BaseT A network based on the 10BaseT standard uses unshielded twisted-pair cables, providing an economical solution to networking by allowing the use of existing telephone wiring and connectors. The RJ-45 connector is used with the 10BaseT standard. 10BaseT has a maximum length of 100 meters. 100BaseTx The VMIVME-7750 also supports the 100BaseTx Ethernet. A network based on a 100BaseTx standard uses unshielded twisted-pair cables and a RJ-45 connector. The 100BaseTx has a maximum length of 100 meters. LANWorks The VMIVME-7750 supports booting on either LAN1 or LAN2 using LANWorks Ethernet BIOS. Refer to Appendix D for more information on remote Ethernet booting. 51 Video Graphics Adapter 2 Video Graphics Adapter The SVGA port on the VMIVME-7750 is controlled by the Intel Graphic and Memory Controller Hub (GMCH) chip with 4 Mbyte video DRAM. The GMCH is hardware and BIOS compatible with the industry EGA and SVGA standards supporting both VESA high-resolution and extended video modes. Table 3-5 shows the graphics video modes supported by the GMCH video controller. Not all SVGA monitors support resolutions and refresh rates beyond 640 x 480 at 85 Hz. Do not attempt to drive a monitor to a resolution or refresh rate beyond its capability. Table 2-7 Supported Graphics Video Resolutions Screen Resolution Maximum Colors Maximum Refresh Rates (Hz) 640 x 480 16 M 85 800 x 600 16 M 85 1024 x 768 16 M 85 1280 x 1024 16 M 85 1600 x 900 64 K 85 1600 x 1200 256 75 52 2 VMIVME-7750 Product Manual Universal Serial Bus The VMIVME-7750 provides a dual Universal Serial Bus (USB) connection on the front panel. The on-board USB controllers completely support the standard USB interface. The USB Host Controller moves data between system memory and the USB by processing and scheduling data structures. The controller executes the scheduled lists, and reports status back to the system. NOTE: Default CMOS settings of the VMIVME-7750 have USB functions disabled. This allows more interrupts and less Interrupt Latency for Real Time system. If USB is enabled, the user must be aware that Interrupt Sharing and Latency will be effected. 53 CHAPTER Embedded PC/RTOS Features Contents VMEbus Bridge VMIVME-7750 features additional capabilities beyond those of a typical desktop computer system. The unit provides four software-controlled, general-purpose timers along with a programmable Watchdog Timer for synchronizing and controlling multiple events in embedded applications. The VMIVME-7750 also provides a bootable Flash Disk system and 32 Kbyte of non-volatile SRAM. Also, the VMIVME-7750 supports an embedded intelligent VME bridge to allow compatibility with the most demanding VME applications. These features make the unit ideal for embedded applications, particularly where standard hard drives and floppy disk drives cannot be used. The VMIVME-7750 also supports I 2C by integrating specialized circuitry for these functions. 3 54 3 VMIVME-7750 Product Manual 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).
