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AMD-762 Datasheet(PDF) 3 Page - Advanced Micro Devices |
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AMD-762 Datasheet(HTML) 3 Page - Advanced Micro Devices |
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3 / 122 page ![]() Table of Contents iii 24416C—December 2001 AMD-762™ System Controller Data Sheet Preliminary Information Contents Revision History xi 1 Features 1 1.1 AMD Athlon™ System Buses . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1.2 Integrated Memory Controller . . . . . . . . . . . . . . . . . . . . . . . . . 2 1.3 PCI Bus Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.4 AGP Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 1.5 Power Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2 Functional Operation 7 2.1 Processor Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2.1.1 Out of Order, Split Transaction . . . . . . . . . . . . . . . . . . . 7 2.1.2 Point-to-Point, Source Synchronized . . . . . . . . . . . . . . . 8 2.1.3 Push-Pull Compensation . . . . . . . . . . . . . . . . . . . . . . . . . 8 2.2 Memory Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 2.2.1 DRAM Refresh . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 2.2.2 DDR Data Strobes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 2.3 PCI Bus Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 2.3.1 Memory Coherency . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 2.3.2 PCI Arbitration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Legacy Mode—Single PCI Bus Southbridge . . . . . . . . . . . . . 16 Southbridge with an Integrated PCI-PCI Bus Bridge . . . . . 17 Arbitration Priority . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 2.3.3 PCI Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 2.3.4 PCI Parity/ECC Errors . . . . . . . . . . . . . . . . . . . . . . . . . . 18 2.3.5 PCI Accesses by an Initiator . . . . . . . . . . . . . . . . . . . . . 19 |
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