GL9701 PCI ExpressTM to PCI Bridge
6.40 Offset a1h: Slot Numbering Pointer to Next ID Register
Bits
Type
Default
Description
Pointer to Next Capabilities
7:0
RO
00h
6.41 Offset a2h: Slot Numbering Expansion Slot Register
Bits
Type
Default
Description
Expansion Slots Provided – Contains the binary value of the
number of PCI expansion slots located directly on the secondary
interface of this bridge.
4:0
RO
3h
First in Chassis – If this bit is set, it indicates that this bridge is
the first in an expansion chassis. A bridge with this bit set
indicates the existence of an expansion chassis that requires a
unique chassis number.
5
RO
RO
1b
0 – This is not a parent bridge.
1 – This is a parent bridge.
Reserved
7:6
00b
6.42 Offset a3h: Slot Numbering Chassis Number Register
Bits
Type
Default
Description
Chassis Number: Contains the physical chassis number for the
slots on the bridge’s secondary interface.
7:0
RW
00h
6.43 Offset 100h: Advanced Error Reporting Enhanced Capability Header Register
Bits
15:0
Type
RO
Default
0001h
1h
Description
PCI Express Extended Capability ID
Capability Version
19:16
RO
Next Capability Offset – Next capability is Device Serial Number
31:20
RO
150h
Capability.
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