Avago Technologies LSI53C895A - Manual (Page 96)

3-8 Signal Descriptions
3.3.4 Arbitration Signals
Table 3.5 describes Arbitration signals.
3.3.5 Error Reporting Signals
Table 3.6 describes the Error Reporting signals.
Table 3.5 Arbitration Signals
Name PQFP BGA Pos Type Strength Description
REQ/ 198 U1 O 8 mA PCI Request indicates to the system
arbiter that this agent desires use of
the PCI bus. This is a point-to-point
signal. Every master has its own
REQ/ signal.
GNT/ 196 T2 I N/A Grant indicates to the agent that
access to the PCI bus has been
granted. This is a point-to-point
signal. Every master has its own
GNT/ signal.
Table 3.6 Error Reporting Signals
Name PQFP BGA Pos Type Strength Description
PERR/ 28 V11 S/T/S 8 mA PCI 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 corruption.
However, on detection of a PERR/
pulse, the central resource may
generate a nonmaskable interrupt to
the host CPU, which often implies the
system is unable to continue
operation once error processing is
complete.
SERR/ 29 U11 O 8 mA PCI System Error is an open drain output
used to report address parity errors
as well as critical errors other than
parity.