
GL9701 PCI Express
TM
to PCI Bridge
2000-2006 Genesys Logic Inc. - All rights reserved.
Page 44
6.24 Offset 3ch: Interrupt Line Register
Bits
Type
Default
Description
7:0
RW
00h
Interrupt Line: U
sed to communicate interrupt line routing
information. Software will write the routing information into this
register as it initializes and configures the system.
6.25 Offset 3dh: Interrupt Pin Register
Bits
Type
Default
Description
7:0
RO
00h
Interrupt Pin:
GL9701 does not use an interrupt pin.
6.26 Offset 3eh: Bridge Control Register
Bits
Type
Default
Description
0
RW
0b
Parity Error Response Enable
–
Controls the bridge
’
s
response to uncorrectable address, attribute, and data errors on the
secondary interface.
0
–
Ignore uncorrectable address, attribute, and data
errors on the secondary interface.
1
–
Enable uncorrectable address, attribute, and data error
detection and reporting on the secondary interface.
1
RW
0b
SERR# Enable
–
Controls the forwarding of secondary interface
SERR# assertions to the primary interface. The bridge will
transmit an ERR_FATAL or ERR_NONFATAL cycle on the
primary interface when all of the following are true:
SERR# is asserted on the secondary interface
.
This bit is set or Advanced Error Reporting is supported and the
SERR# Assertion Detected Mask bit is clear in the
Secondary Uncorrectable Error Mask register.
The SERR# Enable bit is set in the Command register or the PCI
Express-specific bits are set (refer to Chapter 10 for
details) in the Device Control register of the PCI Express
Capability Structure.