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FW82371 数据表(PDF) 9 Page - Intel Corporation |
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FW82371 数据表(HTML) 9 Page - Intel Corporation |
9 / 284 page 82371AB (PIIX4) 9 4/9/97 2:23 PM PIIX4aDS INTEL CONFIDENTIAL (until publication date) PRELIMINARY 8.1.1. I/O Accesses .....................................................................................................................................154 8.1.2. Memory Address Map........................................................................................................................154 8.1.3. BIOS Memory ....................................................................................................................................155 8.2. PCI Interface.............................................................................................................................................157 8.2.1. Transaction Termination ....................................................................................................................157 8.2.2. Parity Support ....................................................................................................................................157 8.2.3. PCI Arbitration....................................................................................................................................157 8.3. ISA/EIO Interface......................................................................................................................................158 8.4. DMA Controller .........................................................................................................................................158 8.4.1. DMA Transfer Modes.........................................................................................................................159 8.4.2. DMA Transfer Types .........................................................................................................................160 8.4.3. DMA Timings .....................................................................................................................................161 8.4.4. DMA Buffer for Type F Transfers ......................................................................................................161 8.4.5. DREQ and DACK# Latency Control..................................................................................................161 8.4.6. Channel Priority .................................................................................................................................162 8.4.7. Register Functionality ........................................................................................................................162 8.4.8. Address Compatibility Mode ..............................................................................................................162 8.4.9. Summary of DMA Transfer Sizes......................................................................................................163 8.4.9.1. Address Shifting When Programmed for 16-Bit I/O Count by Words.........................................163 8.4.10. Autoinitialize.....................................................................................................................................163 8.4.11. Software Commands .......................................................................................................................164 8.4.12. ISA Refresh Cycles .........................................................................................................................164 8.5. PCI DMA...................................................................................................................................................165 8.5.1. PC/PCI DMA......................................................................................................................................165 8.5.2. Distributed DMA.................................................................................................................................168 8.6. Interrupt Controller ....................................................................................................................................171 8.6.1. Programming the Interrupt Controller ................................................................................................172 8.6.2. End-of-Interrupt Operation.................................................................................................................173 8.6.3. Modes of Operation ...........................................................................................................................173 8.6.4. Cascade Mode...................................................................................................................................175 8.6.5. Edge and Level Triggered Mode........................................................................................................175 8.6.6. Interrupt Masks ..................................................................................................................................176 8.6.7. Reading the Interrupt Controller Status .............................................................................................176 8.6.8. Interrupt Steering ...............................................................................................................................177 8.7. Serial Interrupts.........................................................................................................................................178 8.7.1. Protocol..............................................................................................................................................178 8.8. Timer/Counters .........................................................................................................................................180 8.8.1. Programming the Interval Timer ........................................................................................................180 8.9. Real Time Clock .......................................................................................................................................183 8.9.1. RTC Registers and RAM ...................................................................................................................183 8.9.1.1. Control Register A.......................................................................................................................185 8.9.1.2. Control Register B.......................................................................................................................186 8.9.1.3. Control Register C ......................................................................................................................187 |
类似零件编号 - FW82371 |
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类似说明 - FW82371 |
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