VICB8001 Hytec Electronics Digital I/O and IP Carrier Board

The Newwood Solutions / Hytec Electronics VICB8001 Digital I/O and IP Carrier Board is a 6U (double height) VME board which handles 64 digital signals. The module can be configured using rear mounted transition cards (auto detectable) to work as either 64 digital inputs, 64 digital outputs or 32 digital inputs and outputs. The module features change-of-state detection and contact debounce. The on board memory of the 8001 allows for continuous tracing of the changes of state through time for sequence detection and analysis or to output a digital pattern from memory either as a single shot or as a repeated pattern. The number of output sequences per channel can be programmed up to 64k or 256k.

The unit is constructed to the VME64x standard, with EMC front panel, injector/ejector handles, guide pin and slot keying, static discharge protection, hot swap capability, geographical addressing, 5-row P1 and P2 connectors and 5-row P0 connector.

The 64 TTL signals plus 8 strobes are connect to the 8001 board according to the VME64x Abaco Systems / SBS / Greenspring pin-out for IP module carriers (to maintain compatibility).

The input states are latched and examined at a programmable rate up to 1MHz and stored in a RAM 64k or 256k deep per input. The input states are debounced at a programmable rate (including OFF) and changes detected. A VME interrupted can be generated if a change of state has occurred.

The function of the eight input/output strobes is programmable, including their use as a sample clock. There are two TTL inputs on the front panel for similar functions including history acquisition stop/start. A micro-switch in one of the handles detects insertion/removal and a hot-swap controller powers the unit smoothly up and down without disturbing the rest of the system. Host interaction during insertion/removal is in accordance with the VME64x specification.

There are two IP sites on the board addressable on an individual basis which replace part of the input path (i.e. they take over the 32 IO lines). Addressing and handling of these IP sites is programmable through base control and status registers, including address offsets and interrupt mapping.

The unit supports addressing in A16/D32/D16/D08(EO), A24/D32/D16/D08(EO) and A32/D32/D16/D08(EO) modes as well as BLT32. The registers and 'history' memory can be read at any time but BLT32 is inhibited while sampling into or out of memory is active.