AMD-750 Datasheet, PDF (8/12 Pages) Advanced Micro Devices – Chipset

AMD-750™ Chipset Overview
23016A—August 1999
AGP Features
The AGP features include the following:
n Bus Features
• Compliance with AGP 1.0 specification
• Synchronous 66-MHz 1x and 2x data-transfer modes
• Multiplexed and demultiplexed transfers
• Up to four pipelined grants
• Support of sideband address (SBA) bus
n Request Queue Features
• Separate read-request and write-request queues
• Reordering of high-priority requests over low-priority
requests in queue
• Concurrent issuing of requests from both the write
queue and read queue
• Selects next request to optimize bus utilization
n Transaction Queues
• Memory-to-AGP and processor-to-AGP transaction
queues
n FIFO Features
• 16-entry (64-bit) AGP-to-memory write FIFO
• 64-entry (64-bit) memory-to-AGP read FIFO
n Secondary PCI Bus Features
• Pipelined burst reads and writes
• Extensive utilization of FIFOs
n GART (graphics address remapping table) Features
• Conventional (two-level) GART scheme
• Eight-entry, fully-associative GART table cache (GTC)
• Three fully-associative GART directory caches (GDC)
• One 4-entry for PCI
• One 8-entry for the processor
• One 16-entry for AGP
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AMD-751™ System Controller