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Home >> GE >> GE VMIVME-7700 Ultra Low Voltage Intel® Celeron® VMEbus

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GE VMIVME-7700 Ultra Low Voltage Intel® Celeron® VMEbus

• Comprehensive diagnostics

• Optional disabling of local boots

• Dual-boot option lets users select network or local booting

Serial Ports: Two 16550-compatible serial ports are featured on

the VMIVME-7750 front panel. The serial channel has a 16-b

FIFO to support baud rates up to 115 Kbaud. Requires two

micro-DB-9 to

yte

standard DB-9 adapters, GE Fanuc P/N 360-

ined

oard and mouse connector. A Y-adapter cable is

E

n option to allow the

n I/O space, and are completely

e a nonmaskable interrupt (NMI)

erved when

e

O connection to

tion

d configuration

gh performance PCI-to-VME interface from

ller.

rogrammed to provide the

arbitration:

GL)

Priority (PRI)

010050-001.

Keyboard and Mouse Ports: The VMIVME-7750 has a comb

PS/2 keyb

included.

Flash Memory: The VMIVME-7750 provides up to 1 Gbyte of IDE

CompactFlash memory accessible through the secondary ID

port. The VMIVME-7750 BIOS includes a

board to boot from the Flash memory.

Timers: The VMIVME-7750 provides the user with two 16-bit

timers and two 32-bit timers (in addition to system timers).

These timers are mapped i

software programmable.

Watchdog Timer: The VMIVME-7750 provides a software programmable 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 jumper allows the timeout to

cause a reset. Independent of the jumper, software can enable

the watchdog timeout to caus

or a VMEbus SYSFAIL.

Nonvolatile SRAM: The VMIVME-7750 provides 32 Kbyte of

nonvolatile SRAM. The contents of the SRAM are pres

+5V power is interrupted or removed from the unit.

PMC Expansion Site: The VMIVME-7750 supports IEEE P1386

common mezzanine card specification with a 5V PCI mezzanin

card (PMC) expansion site. The PMC site provides for standard

I/O out the VMEbus front panel. An optional I/

the VMEbus P2 connection can be provided.

Contact GE Fanuc Embedded Systems for more informa

concerning PMC modules and compatibility.

Universal Serial Bus (USB): The VMIVME-7750 provides a front

panel dual connection hub host controller for the USB.

Supported USB features include: isochronous data transfers,

asynchronous messaging, self-identification an

of peripherals, and dynamic (hot) attachment.

VMEbus Interface: The VMIVME-7750 VMEbus interface is based

on the Universe IIB hi

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 contro

The system controller may be p

following modes of

Round Robin (RRS)

Single Level (S

The system controller provides a SYSCLK driver, IACK* daisychain 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 256 µs.

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 (BCAP)

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 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-7750 VMEbus-issued interrupts)

All error processing VMEbus-related interrupts can be mapped

to PCI INTA# or SERR#. Note: PCI SERR# initiates a 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 software-generated VMEbus interrupt.

Byte Swapping: The Intel 80x86 family of processors use littleendian format. To accommodate other VMEbus modules that

transfer data in big-endian format such as the 680x0 processor

family, the VMIVME-7750 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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