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30 Programmer’s Reference Manual
Intel
®
High Definition Audio Controller Registers (D27:F0)
1.1.35 VCCAP—Virtual Channel Enhanced Capability Header
(Intel
®
High Definition Audio Controller—D27:F0)
Address Offset: 100h–103h Attribute: RO
Default Value: 13010002h Size: 32 bits
1.1.36 PVCCAP1—Port VC Capability Register 1
(Intel
®
High Definition Audio Controller—D27:F0)
Address Offset: 104h–107h Attribute: RO
Default Value: 00000001h Size: 32 bits
Bit Description
31:20
Next Capability Offset — RO. Hardwired to 130h. Points to the next capability header that is the
Root Complex Link Declaration Enhanced Capability Header.
19:16 Capability Version — RO. Hardwired to 1h.
15:0 PCI Express* Extended Capability — RO. Hardwired to 0002h.
Bit Description
31:12 Reserved.
11:10 Port Arbitration Table Entry Size — RO. Hardwired to 0 since this is an endpoint device.
9:8 Reference Clock — RO. Hardwired to 0 since this is an endpoint device.
7 Reserved.
6:4
Low Priority Extended VC Count — RO. Hardwired to 0. Indicates that only VC0 belongs to the low
priority VC group.
3 Reserved.
2:0
Extended VC Count — RO. Hardwired to 001b. Indicates that 1 extended VC (in addition to VC0) is
supported by the Intel
®
High Definition Audio controller.