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Pci and external memory interface timing diagrams – Avago Technologies LSI53C1000R User Manual

Page 296

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6-14

Specifications

Version 2.2

Copyright © 2000–2003 by LSI Logic Corporation. All rights reserved.

6.4 PCI and External Memory Interface Timing Diagrams

Tables

6.17

through

6.38

and figures

6.11

through

6.34

represent signal

activity when the LSI53C1000R accesses the PCI bus. This section
includes timing diagrams for access to three groups of memory
configurations. The first group applies to Target Timing. The second
group applies to Initiator Timing. The third group applies to
External Memory Timing.

Note:

Multiple byte accesses to the external memory bus
increase the read or write cycle by 11 clocks for each
additional byte.

Timing diagrams included in this section are:

Target Timing

PCI Configuration Register Read

PCI Configuration Register Write

Operating Registers/SCRIPTS RAM Read, 32 Bits

Operating Register/SCRIPTS RAM Read, 64 Bits

Operating Register/SCRIPTS RAM Read, 32 Bits

Operating Register/SCRIPTS RAM Write, 64 Bits

Initiator Timing

Nonburst Opcode Fetch, 32-Bit Address and Data

Burst Opcode Fetch, 32-Bit Address and Data

Back to Back Read, 32-Bit Address and Data

Back to Back Write, 32-Bit Address and Data

Burst Read, 32-Bit Address and Data

Burst Read, 64-Bit Address and Data

Burst Write, 32-Bit Address and Data

Burst Write, 64-Bit Address and Data

External Memory Timing

External Memory Read

External Memory Write

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