From ASICs to SOCs: A Practical Approach

Key Features

Basic OCP

• Master-slave interface with unidirectional signals

• Driven and sampled by the rising edge of the OCP clock

• Fully synchronous, no multicycle timing paths

• All signals are strictly point-to-point (except clock and reset)

• Simple request/acknowledge protocol

  Supports data transfer on every clock cycle

  Allows master or slave to control transfer rate

• Configurable data word width

• Configurable address width

• Pipelined or blocking reads

• Specific description formats for core characteristics, interfaces (signals, timing, and configuration), performance

Simple Extensions Enhance Performance

• Burst codes link related transfers into complete transaction

• Burst transactions supported:

  Sequential (defined or undefined length)

  Streaming (FIFO)

  Core-specific ...