IDT73720

The IDT73720/A Bus Exchanger is a high speed 16-bit bus exchange device intended for inter-bus communication in interleaved memory systems and high performance multiplexed address and data buses.

The Bus Exchanger is responsible for interfacing between the CPU A/ D bus (CPU address/data bus) and multiple memory data buses.

The 73720/A uses a three bus architecture (X, Y, Z), with control signals suitable for simple transfer between the CPU bus (X) and either memory bus Y or Z). The Bus Exchanger features independent read and write latches for each memory bus, thus supporting a variety of memory strategies. All three ports support byte enable to independently enable upper and lower bytes.