Avago Technologies LSI53C896 - Manual (Page 55)

SCSI Functional Description 2-27
Version 3.3 Copyright © 1998–2003 by LSI Logic Corporation. All rights reserved.
2.2.11 Parity Options
The LSI53C896 implements a flexible parity scheme that allows control
of the parity sense, allows parity checking to be turned on or off, and has
the ability to deliberately send a byte with bad parity over the SCSI bus
to test parity error recovery procedures.
Table 2.3 defines the bits that are
involved in parity control and observation. Table 2.4 describes the parity
control function of the Enable Parity Checking and Assert SCSI Even
Parity bits in the
SCSI Control One (SCNTL1) register, bit 2. Table 2.5
describes the options available when a parity error occurs. Figure 2.2
shows where parity checking is done in the LSI53C896.