GE VMIVME-2510B 64-bit TTL Digital Input/Output Features

Functional Features

Compatibility VMEbus-compliant dual high-profile I/O connector type: Dual 64-pin connector, DIN 41612

I/O Organization: Eight I/O ports; eight bits wide.

Addressable to any address within the short supervisory or short unprivileged I/O mapping.

Addressing scheme:

Eight ports can be individually addressed on 8-bit or 16-bit boundaries.

Address DIP switches provide unlimited selection of short data I/O address mappings.

Built-in Tests

Output data can be read back in real-time or off-line mode.

Offline mode can be enabled by writing to the Control and Status Register (CSR) to set the test mode bit.

When test mode is enabled, all outputs are tri-stated (TRI-STATE).

Two test mode bits are provided so that each connector I/O (32-bit) can be tested independently if necessary.

Fault LED:

The Fault LED illuminates at power-up and system reset.

It can be extinguished under program control after successfully performing diagnostics.

I/O Circuitry:

The transceivers support high current (64 mA) outputs.

These octal bus transceivers use the SN74AS645 in the logic level TTL I/O option. The open collector option uses the SN74AS641 type transceiver.

If the open collector option is ordered, all 64 bits are output only.