Product Summary  



EP433/434 PowerPC to PCI Bridge


  • Fully supports PCI specification 2.1 and 2.2 protocol.
  • Designed for ASIC and PLD implementations.
  • Fully static design with edge triggered flip-flops.
  • Supports all PowerPC CPU with 603 bus interface and MPC860 interface.
  • Host bridge design includes bus master, bus target and central system functions.
  • Generates standard PCI type 0 and type 1 configuration accesses.
  • Combined bus master and target functions.
    • Master function
    • Initiate PCI memory and IO read/write
    • Automatic transfer restart on target retry and disconnect
    • Target function
    • Memory or IO read/write
    • Configuration read/write
    • Support for back-end initiated target retry, disconnect and abort
  • Supports Zero wait state and user inserted wait state burst data transfer.
  • Dual write buffer supports write data posting.
  • User controlled burst and non-burst data transfer.
  • Automatic handling of configuration register read/write access.
  • Supports user initiated target retry, disconnect, abort and delayed transaction.
  • Parity generation and parity error detection.
  • Includes all PCI specific configuration registers.
  • Supports high speed bus request and bus parking.

Differentiating Features

  • CPU type and CPU bus interface selection.
  • Bus arbiter.
  • Multiple base address registers.
  • Asynchronous clock domain.
  • Unidirectional host bridge.


PowerPC to PCI Bridge