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Figure2.2 parity checking/generation, Parity checking/generation, Figure 2.2 – Avago Technologies LSI53C896 User Manual

Page 58

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2-30

Functional Description

Version 3.3

Copyright © 1998–2003 by LSI Logic Corporation. All rights reserved.

Figure 2.2

Parity Checking/Generation

PCI Interface**

DMA FIFO*

(64 Bits x 118)

SODL Register*

SCSI Interface**

X

S

PCI Interface**

DMA FIFO*

(64 Bits x 118)

SIDL Register*

SCSI Interface**

G

X

PCI Interface**

DMA FIFO*

(64 Bits x 118)

SODL Register*

SCSI Interface**

X

S

SODR Register*

PCI Interface**

DMA FIFO*

(64 Bits x 118)

SCSI Interface**

G

X

SCSI FIFO*

(8 or 16 Bits x 31)

X

* = No parity protection

** = Parity protected

Asynchronous

SCSI Send

Asynchronous

SCSI Receive

Synchronous

SCSI Send

Synchronous

SCSI Receive

X – Check parity
G – Generate 32-bit even PCI parity
S – Generate 8-bit odd SCSI parity