8399 N/B Maintenance

￿800 / 600 / 400 / 200 MHz clock rates with “Double Data Rate”-style operation for 1600/1200/800/400 MT/s in both directions simultaneously (total 6.4GB/sec using 16-bit transfer mode)

￿Default 8-bit / 200 MHz operation on startup for high reliability with speedup to dual 16-bit, 800 MHz operation (6.4 GB/sec total bandwidth) under software control (transmit and receive may be different widths and / or speeds)

￿Full Featured Accelerated Graphics Port (AGP) 8x Controller

￿Supports 533 MHz 8x, 266 MHz 4x, and 133SecretMHzDocument2x transfer mod s for AD and SBA signaling

￿AGP v3.0 compliant with 8x transfer mode

￿Pseudo-synchronous with the host CPU bus with optimal skew control

￿Supports SideBand AddressingMiTac(SBA) mode (non-multiplexed address / data)

￿AGP pipelined Confidentialsplit-transaction long-burst transfers up to 1GB/sec

￿Eight level read request queue

￿Four level posted-write request queue

￿Thirty-two level (quadwords) read data FIFO (256 bytes)

￿Sixteen level (quadwords) write data FIFO (128 bytes)

￿Intelligent request reordering for maximum AGP bus utilization

￿Supports Flush/Fence commands

￿Graphics Address Relocation Table (GART)

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