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CS5530 数据表(PDF) 86 Page - National Semiconductor (TI) |
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CS5530 数据表(HTML) 86 Page - National Semiconductor (TI) |
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86 / 241 page ![]() www.national.com 86 Revision 4.1 Functional Description (Continued) 3.5.2.1 Delayed PCI Transactions If PCI delayed transactions are enabled (F0 Index 42h[5] = 1) multiple PCI cycles occur for every slower ISA cycle. Figure 3-9 shows the relationship of PCI cycles to an ISA cycle with PCI delayed transactions enabled. See Section 3.2.6 “Delayed Transactions” on page 48 for additional information. Figure 3-9. PCI to ISA Cycles with Delayed Transaction Enabled REQ# GNT# FRAME# IRDY# TRDY# STOP# IOR# BALE PCI 1 1 1 1 1-Delay 2 3 2 - IDE bus master - starts and completes 3 - End of ISA cycle ISA |
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