TI380FPAA PACKETBLASTER^TM

SPWS038 - MAY 1997

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of TexasInstruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

features

• Frame-Processing Accelerator for TI380C2x and TI380C3x
• Supports TI380C2x and TI380C3x Token-Ring Adapters
• Supports TI380C2x Ethernet^TM Adapters
• Supports 4- or 6-MHz Adapter Local Bus Operation
• Interfaces Directly to TI380C2x Network Commprocessors^TM
• Hardware Capture of Network Statistics
• Increases Adapter Frame-Processing Rate to up to 28K Frames per Second
• Single 5-V Supply
• 0.8-um CMOS Technology
• 52-Pin Plastic Leaded Chip Carrier (FN)
• Operating Temperature Range 0°C to 70°C

description

PacketBlaster and Commprocessor are trademarks of Texas Instruments Incorporated. Ethernet is a registered trademark of Xerox Corporation.

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:

• Managing all commprocessor protocol handler (PH) operations. The FPA manages all receive- and transmit-frame queues.
• Managing adapter buffers. The FPA manages all adapter memory buffers, allocating them to the appropriate queues as required.
• Managing host direct memory access (DMA) by way of the commprocessor system interface (SIF) DMA controller.
• Managing frame transfers to the host. The FPA manages queues of frames to and from the host, manages rx/tx list information, and coordinates the two.
• Gathering adapter and network statistics in dedicated hardware counters.

View more information about generic part numbers:TI380FPAA

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