STAC9752 Datasheet, PDF (70/95 Pages) Integrated Device Technology – TWO-CHANNEL, 20-BIT, AC’97 2.3 CODECS WITH HEADPHONE DRIVE, SPDIF OUTPUT MICROPHONE & JACK SENSING

STAC9752/9753
TWO-CHANNEL, 20-BIT, AC’97 2.3 CODECS WITH HEADPHONE DRIVE, SPDIF OUTPUT MICROPHONE & JACK SENSING
Bit(s) Reset Value Name
Description
CODEC Compatibility Class (RO)
This is a CODEC vendor specific field to define software compatibility for the
CODEC. Software reads this field together with the CODEC vendor ID (reg 7C-7Eh)
to determine vendor specific programming interface compatibility. Software can rely
12-8
CL4:CL0 on vendor specific register behavior to be compatible among vendor CODECs of
the same class.
00h - Field not implemented
01h-1Fh - Vendor specific compatibility class code
Equals Vendor ID2 (Reg 7Eh) bits D7 to D0
Revision ID: (RO)
This register specifies a device specific revision identifier. The value is chosen by
7-0
RV7:RV0
the vendor. Zero is an acceptable value. This field should be viewed as a vendor
defined extension to the CODEC ID. This number changes with new CODEC
stepping of the same CODEC ID.
Equals Major Rev bits (Reg 6Ch) bits D7 to D0.
8.4.2.
PCI SVID (62h Page 01h)
Register 24h must be set to Page 01h to access this register.
Default: FFFFh
D15
D14
PVI15
PVI14
D7
D6
PVI7
PVI6
D13
PVI13
D5
PVI5
D12
PVI12
D4
PVI4
D11
PVI11
D3
PVI3
D10
PVI10
D2
PVI2
D9
PVI9
D1
PVI1
D8
PVI8
D0
PVI0
Bit(s) Reset Value Name
Description
PCI Sub System Vendor ID:
This field provides the PCI Sub System Vendor ID of the Audio or Modem Sub
15-0
PVI15:PVI0 Assembly Vendor (i.e., CNR Manufacturer, Motherboard Vendor). This is NOT the
CODEC vendor PCI Vendor ID, nor the AC'97 Controller PCI Vendor ID.
If data is not available, returns FFFFh.
Note: This register is populated by the BIOS and does not reset on RESET#.
8.4.3.
PCI SSID (64h Page 01h)
Register 24h must be set to Page 01h to access this register.
Default: FFFFh
D15
D14
D13
D12
D11
D10
D9
D8
PI15
PI14
PI13
PI12
PI11
PI10
PI9
PI8
D7
D6
D5
D4
D3
D2
D1
D0
PI7
PI6
PI5
PI4
PI3
PI2
PI1
PI0
Bit(s) Reset Value Name
Description
15-0
PCI Sub System ID:
This field provides the PCI Sub System ID of the Audio or Modem Sub Assembly
PI15:PVI0
(i.e., CNR Model, Motherboard SKU). This is NOT the CODEC vendor PCI ID, nor
the AC'97 Controller PCI ID. Information in this field must be available for AC'97
controller reads when CODEC Ready is asserted in AC-Link. If data is not
available, returns FFFFh.
Note: This register is populated by the BIOS and does not reset on RESET#.
IDT™
70
STAC9752/9753
TWO-CHANNEL, 20-BIT, AC’97 2.3 CODECS WITH HEADPHONE DRIVE, SPDIF OUTPUT MICROPHONE & JACK SENSING
REV 3.3 1206