Avago Technologies LSI8751D - Manual (Page 106)

4-14 Signal Descriptions
Table 4.8 describes the Error Reporting Signals group.
Table 4.8 Error Reporting Signals
Name
Pin No.
LSI53C875,
LSI53C875J,
LSI53C875N,
LSI53C875JB Type Description
PERR/ 24/30/H2 S/T/S Parity Error may be pulsed active by an agent that detects a data
parity error. PERR/ can be used by any agent to signal data
corruptions.
SERR/ 143/186/E7 O System Error is an open drain output used to report address parity
errors. On detection of a PERR/ pulse, the central resource
generates a nonmaskable interrupt to the host CPU, which often
implies the system is unable to continue operation once error
processing completes.