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40 Programmer’s Reference Manual
Intel
®
High Definition Audio Controller Registers (D27:F0)
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
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
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 — RO. Hardwired to 0100b indicating that the ICH7 Intel
®
High
Definition Audio controller supports 4 output streams.
11:8
Number of Input Stream Supported — RO. Hardwired to 0100b indicating that the ICH7 Intel High
Definition Audio controller supports 4 input streams.
7:3
Number of Bidirectional Stream Supported — RO. Hardwired to 0 indicating that the ICH7 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 ICH7 Intel High
Definition Audio controller supports 1 serial data output signal.
0
64-bit Address Supported — RO. Hardwired to 1b indicating that the ICH7 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 Intel
®
ICH7 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 Intel
®
ICH7 supports major revision
number 1 of the Intel
®
High Definition Audio specification.