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Programmer’s Reference Manual 7
Contents
1.2.25 RIRBWP—RIRB Write Pointer Register
(Intel
®
High Definition Audio Controller—D27:F0).................................................51
1.2.26 RINTCNT—Response Interrupt Count Register
(Intel
®
High Definition Audio Controller—D27:F0).................................................52
1.2.27 RIRBCTL—RIRB Control Register
(Intel
®
High Definition Audio Controller—D27:F0).................................................52
1.2.28 RIRBSTS—RIRB Status Register
(Intel
®
High Definition Audio Controller—D27:F0).................................................53
1.2.29 RIRBSIZE—RIRB Size Register
(Intel
®
High Definition Audio Controller—D27:F0).................................................53
1.2.30 IC—Immediate Command Register
(Intel
®
High Definition Audio Controller—D27:F0).................................................53
1.2.31 IR—Immediate Response Register
(Intel
®
High Definition Audio Controller—D27:F0).................................................54
1.2.32 IRS—Immediate Command Status Register
(Intel
®
High Definition Audio Controller—D27:F0).................................................54
1.2.33 DPLBASE—DMA Position Lower Base Address Register
(Intel
®
High Definition Audio Controller—D27:F0).................................................55
1.2.34 DPUBASE—DMA Position Upper Base Address Register
(Intel
®
High Definition Audio Controller—D27:F0).................................................55
1.2.35 SDCTL—Stream Descriptor Control Register
(Intel
®
High Definition Audio Controller—D27:F0).................................................55
1.2.36 SDSTS—Stream Descriptor Status Register
(Intel
®
High Definition Audio Controller—D27:F0).................................................57
1.2.37 SDLPIB—Stream Descriptor Link Position in Buffer
Register (Intel
®
High Definition Audio Controller—D27:F0)...................................58
1.2.38 SDCBL—Stream Descriptor Cyclic Buffer Length Register
(Intel
®
High Definition Audio Controller—D27:F0).................................................58
1.2.39 SDLVI—Stream Descriptor Last Valid Index Register
(Intel
®
High Definition Audio Controller—D27:F0).................................................59
1.2.40 SDFIFOW—Stream Descriptor FIFO Watermark Register
(Intel
®
High Definition Audio Controller—D27:F0).................................................59
1.2.41 SDFIFOS—Stream Descriptor FIFO Size Register
(Intel
®
High Definition Audio Controller—D27:F0).................................................60
1.2.42 SDFMT—Stream Descriptor Format Register
(Intel
®
High Definition Audio Controller—D27:F0).................................................61
1.2.43 SDBDPL—Stream Descriptor Buffer Descriptor List Pointer Lower Base Address
Register
(Intel
®
High Definition Audio Controller—D27:F0).................................................62
1.2.44 SDBDPU—Stream Descriptor Buffer Descriptor List Pointer
Upper Base Address Register (Intel
®
High Definition Audio Controller—D27:F0) 62
2 AC ’97 Audio Controller Registers (D30:F2) .............................................................................63
2.1 AC ’97 Audio PCI Configuration Space
(Audio—D30:F2).................................................................................................................63
2.1.1 VID—Vendor Identification Register (Audio—D30:F2) ..........................................64
2.1.2 DID—Device Identification Register (Audio—D30:F2)...........................................64
2.1.3 PCICMD—PCI Command Register (Audio—D30:F2) ...........................................65
2.1.4 PCISTS—PCI Status Register (Audio—D30:F2)...................................................66
2.1.5 RID—Revision Identification Register (Audio—D30:F2)........................................67
2.1.6 PI—Programming Interface Register (Audio—D30:F2).........................................67
2.1.7 SCC—Sub Class Code Register (Audio—D30:F2) ...............................................67