The TI380FPAA frame-processing accelerator (FPA) provides hardware to accelerate the processing rate of frames by the network communications processor (commprocessor). It supports a 4-MHz or 6-MHz adapter local-bus operation. The CPU of a normal TI380C2x or TI380C3x adapter is responsible for frame transport between network and host, gathering of adapter and network statistics, local network management protocols, and medium-access-control (MAC) protocols. The TI380FPAA puts the performance bottlenecks of frame transport and statistics-gathering into dedicated hardware, leaving the CPU to run MAC and management protocols. It is a drop-in replacement for the TI380FPA device. The TI380FPAA is responsible for: