VMIVME-7807 GE VMIVME-7807.COM1可通过前面板使用
串行端口：上有四个16550兼容的串行端口
VMIVME-7807.COM1可通过前面板使用
RJ45连接器。COM2、COM3（TTL）和COM4（TTL）可配置
用于RS-232/422，路由到后部I/O P2连接器。
键盘和鼠标端口：VMIVME-7807具有组合PS/2
键盘和鼠标连接器。包括一根Y形适配器电缆。
闪存：VMIVME-7807提供高达2 GB的容量
可通过辅助IDE端口访问CompactFlash内存
VMIVME-7807 BIOS包括一个选项，允许板从
闪存。
定时器：VMIVME-7807为用户提供两个16位定时器
以及两个32位定时器（除了系统定时器之外）。这些计时器
映射在存储器空间中并且是完全软件可编程的。
看门狗定时器：VMIVME-7807提供了一个可通过软件编程的看门狗定时器。看门狗计时器在下启用
软件控制。一旦看门狗定时器启用，软件必须
在指定的计时器周期内访问计时器，否则超时
发生用户可配置的开关允许超时导致重置。
独立于开关，软件可以使看门狗定时器
导致不可滑动中断（NMI）或VMEbus SYSFAIL。
非易失性SRAM:VMIVME-7807提供32 KB的
非易失性SRAM。当
电源被中断或从装置中断开。
PMC扩展站点：VMIVME-7807有一个IEEE 1386.1 PCI
夹层卡（PMC）扩展站点。这种扩展功能允许
为PMC应用程序提供的外围设备的添加。PMC现场
是PCI-X，66MHz。
GE Fanuc嵌入式系统的PMC237CM1/V扩展卡：
PMC237CM1/V扩展卡是一个6U的外形尺寸板，它增加了三个
PMC插槽或两个PMC插槽和一个PCMCIA/CardBus插槽。
注意：VMIVME-7807将抑制PCI-X 66 MHz/64位
当使用传统的33MHz/32位PMC卡时，总线。
通用串行总线（USB）：VMIVME-7807提供四个USB
2.0连接。两个USB端口在前面板上可用，
而另外两个路由到后部I/O。高速USB 2.0
GE Fanuc Automation，Inc.，阿拉巴马州亨茨维尔市南纪念公园路12090号，邮编：35803-3308 3
VMIVME-7807型
允许高达480Mbyte/s的数据传输。这个速度快40倍
而不是USB 1.0。USB 2.0与USB 1.0向后兼容。
IDE接口：VMIVME-7807上的IDE接口支持
ATA-33、ATA-66和ATA-100驱动器，并自动确定
基于所使用的驱动器类型的正确操作模式。为了
在ATA-100模式下正常工作，一种特殊的80导体电缆
必须使用，而不是标准的40导体电缆。这根电缆是
通常可从ATA-100驱动器制造商处获得。
热管理：VMIVME-7807采用无源散热器
其依赖于设备机架内的强制空气冷却
指定的流速。请参阅环境规范
更多信息。
VMEbus接口：VMIVME-7807 VMEbus界面基于
Universe II高性能PCI到VMEbus接口
新桥/苔原。
系统控制器：VMEbus系统控制器功能允许
板作为插槽1控制器运行，或者在
另一块板充当系统控制器。系统控制器
可以被编程为提供以下仲裁模式：
轮调（RRS）
单层（SGL）
优先级（PRI）
系统控制器提供SYSCLK驱动程序，IACK*菊花链
驱动程序和VMEbus访问超时定时器。系统控制器也
如果在指定的时间内没有看到BBSY*，则提供仲裁超时
在发出BGOUT*信号之后的时段。此周期可编程用于
16或256µs。
VMEbus请求器：微处理器可以请求并获得控制
使用以下任一VME总线请求线路（BR3*至BR0*）的总线
软件控制。请求者可以被编程为在以下任何一种情况下操作
以下模式：
请求发布（ROR）
完成后释放（RWD）
VME总线捕获和保持（VCAP）
邮箱：VMEbus接口提供四个32位邮箱，
可从微处理器和VME总线访问
提供处理器间通信。邮箱有能力
以在被VME总线访问时中断微处理器。
中断处理程序：中断处理程序监视，并且可以
编程为响应任何或所有VMEbus IRQ*线路。全部正常
进程VME总线相关中断可以映射到PCI INTA#或
SERR#中断。其中包括：
邮箱中断
VME总线中断
VME总线中断器IACK周期（VMIVME-7807的确认
VME总线发出的中断）
所有错误处理VMEbus相关中断都可以映射到PCI
INTA#或SERR#。注：PCI SERR#启动SBC NMI。其中包括：
ACFAIL*中断
BERR*中断
SYSFAIL*中断
中断处理程序有一个对应的STATUS/ID寄存器
IRQ*中断。一旦处理程序接收到IRQ*，它就会请求
VME总线，一旦获得批准
Serial Ports:Four 16550-compatible serial ports are featured on the
VMIVME-7807.COM1 is available through the front panel using an
RJ45 connector.COM2,COM3(TTL)and COM4(TTL)are configurable
for RS-232/422 routed out the rear I/O P2 connector.
Keyboard and Mouse Ports:The VMIVME-7807 has a combined PS/2
keyboard and mouse connector.A Y-adapter cable is included.
Flash Memory:The VMIVME-7807 provides up to 2 Gbyte
CompactFlash memory accessible through the secondary IDE port.The
VMIVME-7807 BIOS includes an option to allow the board to boot from
the Flash memory.
Timers:The VMIVME-7807 provides the user with two 16-bit timers
and two 32-bit timers(in addition to system timers).These timers are
mapped in memory space,and are completely software programmable.
Watchdog Timer:The VMIVME-7807 provides a softwareprogrammable watchdog timer.The watchdog timer is enabled under
software control.Once the watchdog timer is enabled,software must
access the timer within the specified timer period or a timeout will
occur.A user configurable switch allows the timeout to cause a reset.
Independent of the switch,software can enable the watchdog timer to
cause a nonmaskable interrupt(NMI)or a VMEbus SYSFAIL.
Nonvolatile SRAM:The VMIVME-7807 provides 32 Kbyte of
nonvolatile SRAM.The contents of the SRAM are preserved when
power is interrupted or removed from the unit.
PMC Expansion Site:The VMIVME-7807 has one IEEE 1386.1 PCI
mezzanine card(PMC)expansion site.This expansion capability allows
the addition of peripherals offered for PMC applications.The PMC site
is PCI-X,66 MHz.
GE Fanuc Embedded Systems’PMC237CM1/V Expander Card:The
PMC237CM1/V expander card is a 6U form factor board that adds three
PMC slots or two PMC slots and one PCMCIA/CardBus socket.
NOTE:The VMIVME-7807 will throttle back the PCI-X 66 MHz/64-bit
bus when using legacy 33 MHz/32-bit PMC cards.
Universal Serial Bus(USB):The VMIVME-7807 provides four USB
2.0 connections.Two of the USB ports are available on the front panel,
while the other two are routed to the rear I/O.High speed USB 2.0
GE Fanuc Automation,Inc.12090 South Memorial Parkway,Huntsville,Alabama 35803-3308 3
VMIVME-7807
allows data transfers of up to 480 Mbyte/s.This rate is 40 times faster
than USB 1.0.USB 2.0 is backward compatible with USB 1.0.
IDE Interface:The IDE interface on the VMIVME-7807 supports
ATA-33,ATA-66 and ATA-100 drives and automatically determines the
proper operating mode based on the type of drive used.In order to
properly function in the ATA-100 mode,a special 80-conductor cable
must be used instead of the standard 40-conductor cable.This cable is
typically available from the ATA-100 drive manufacturer.
Thermal Management:The VMIVME-7807 utilizes a passive heat sink
that relies on forced air cooling within the equipment rack at the
specified flow rate.Please refer to the environmental specifications for
more information.
VMEbus Interface:The VMIVME-7807 VMEbus interface is based on
the Universe II high performance PCI-to-VMEbus interface from
Newbridge/Tundra.
System Controller:The VMEbus system controller capabilities allow
the board to operate as a slot 1 controller,or it may be disabled when
another board is acting as the system controller.The system controller
may be programmed to provide the following modes of arbitration:
Round Robin(RRS)
Single Level(SGL)
Priority(PRI)
The system controller provides a SYSCLK driver,IACK*daisy-chain
driver,and a VMEbus access timeout timer.The system controller also
provides an arbitration timeout if BBSY*is not seen within a specified
period after a BGOUT*signal is issued.This period is programmable for
16 or 256µs.
VMEbus Requester:The microprocessor can request and gain control
of the bus using any of the VMEbus request lines(BR3*to BR0*)under
software control.The requester can be programmed to operate in any of
the following modes:
Release-On-Request(ROR)
Release-When-Done(RWD)
VMEbus Capture and Hold(VCAP)
Mailboxes:The VMEbus interface provides four 32-bit mailboxes,
which are accessible from both the microprocessor and the VMEbus
providing interprocessor communication.The mailboxes have the ability
to interrupt the microprocessor when accessed by the VMEbus.
Interrupt Handler:The interrupt handler monitors,and can be
programmed to respond to any or all VMEbus IRQ*lines.All normal
process VMEbus-related interrupts can be mapped to PCI INTA#or
SERR#interrupts.These include:
Mailbox interrupts
VMEbus interrupts
VMEbus interrupter IACK cycle(acknowledgment of VMIVME-7807
VMEbus-issued interrupts)
All error processing VMEbus-related interrupts can be mapped to PCI
INTA#or SERR#.Note:PCI SERR#initiates an SBC NMI.These include:
ACFAIL*interrupt
BERR*interrupt
SYSFAIL*interrupt
The interrupt handler has a corresponding STATUS/ID register for each
IRQ*interrupt.Once the handler receives an IRQ*,it requests the
VMEbus and,once granted,it performs an IACK cycle for that level.
Once the IACK cycle is complete and the STATUS/ID is stored in the
corresponding ID register,an appropriate interrupt status bit is set in an
internal status register and a PCI interrupt is generated.The PCI
interrupt can be mapped to PCI INTA#or SERR#.
Interrupter:Interrupts can be issued under software control on any or
all of the seven VMEbus interrupt lines(IRQ7*to IRQ1*).A common ID
register is associated with all interrupt lines.During the interrupt
acknowledge cycle,the interrupter issues the ID to the interrupt
handler.
The interrupter can be programmed to generate a PCI INTA#or SERR#
interrupt when a VMEbus interrupt handler acknowledges a softwaregenerated VMEbus interrupt.
Byte Swapping:The Intel 80x86 family of processors uses little-endian
format.To accommodate other VMEbus modules that transfer data in
big-endian format(such as the 680x0 processor family),the
VMIVME-7807 incorporates byte-swapping hardware.This provides
independent byte swapping for both the master and slave interfaces.
Both master and slave interface byte swapping are under software
control.
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