FW322 Functional Overview
   The FW322 is a high-performance, PCI bus-based open host controller designed by Agere Systems Inc. for implementation of 1394a-2000 compliant systems and devices. Link-layer functions are handled by the FW322, utilizing the on-chip 1394a-2000 compliant link core and physical layer core. A high-performance and cost-effective solution for connecting and servicing multiple 1394 (both 1394-1995 and 1394a-2000) peripheral devices can be realized using this PHY/link OHCI device.

FW322 Functional Description
   The FW322 is comprised of four major functional sections (see Figure 1): PCI core, OHCI isochronous and asynchronous data transfer, link core, and PHY core. The following is a general description of each of the major sections.