Integrated Intel
®
High Definition Audio Controller Registers
710 Datasheet
17.1.2.1 GCAP—Global Capabilities Register
(Intel
®
High Definition Audio Controller—D27:F0)
Memory Address:HDBAR + 00h Attribute: RO
Default Value: 4401h Size: 16 bits
17.1.2.2 VMIN—Minor Version Register
(Intel
®
High Definition Audio Controller—D27:F0)
Memory Address:HDBAR + 02h Attribute: RO
Default Value: 00h Size: 8 bits
17.1.2.3 VMAJ—Major Version Register
(Intel
®
High Definition Audio Controller—D27:F0)
Memory Address:HDBAR + 03h Attribute: RO
Default Value: 01h Size: 8 bits
Bit Description
15:12
Number of Output Stream Supported — R/WO. 0100b indicates that the PCH’s Intel
High Definition Audio controller supports 4 output streams.
11:8
Number of Input Stream Supported — R/WO. 0100b indicates that the PCH’s Intel
High Definition Audio controller supports 4 input streams.
7:3
Number of Bidirectional Stream Supported — RO. Hardwired to 0 indicating that
the PCH’s Intel High Definition Audio controller supports 0 bidirectional stream.
2 Reserved.
1
Number of Serial Data Out Signals — RO. Hardwired to 0 indicating that the PCH’s
Intel High Definition Audio controller supports 1 serial data output signal.
0
64-bit Address Supported — R/WO. 1b indicates that the PCH’s Intel High Definition
Audio controller supports 64-bit addressing for BDL addresses, data buffer addressees,
and command buffer addresses.
Bit Description
7:0
Minor Version — RO. Hardwired to 0 indicating that the PCH supports minor revision
number 00h of the Intel
®
High Definition Audio specification.
Bit Description
7:0
Major Version — RO. Hardwired to 01h indicating that the PCH supports major
revision number 1 of the Intel
®
High Definition Audio specification.
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