STAC9766 IDT [Integrated Device Technology], STAC9766 Datasheet - Page 71

• Manufacturer Part Number: STAC9766
• Manufacturer: IDT [Integrated Device Technology]

IDT™
TWO-CHANNEL, 20-BIT, AC’97 2.3 CODECS WITH STEREO MICROPHONE AND MIC/JACK SENSING
STAC9766/9767
TWO-CHANNEL, 20-BIT, AC’97 2.3 CODECS WITH STEREO MICROPHONE AND MIC/JACK SENSING
8.4.4.
Bit(s) Reset Value
Bit(s) Reset Value
15-0
15-5
4-1
0
D15
D7
Function Select (66h
Register 24h must be set to Page 01h to access this register.
Default: 0000h
Note: This register is populated by the BIOS and does not reset on RESET#.
00h
0
RESERVED
D14
D6
PI15:PVI0
Reserved Reserved
FC3:FC0
Name
Name
T/R
Function Code bits:
00h - Line Out (Master Out)
01h - Head Phone Out (AUX Out)
02h - DAC 3 (C/LFE) - Not Supported
03h - SPDIF out
04h - Phone In
05h - Mic1 (Mic select = 0)
06h - Mic2 (Mic select = 1)
07h - Line In
08h - CD In
09h - Video In
0Ah - Aux In
0Bh - Mono Out
0C-0Fh - Reserved
For supported Jack and Mic Sense Functions, see Table23: page72.
The Function Code Bits are used to read Register 68h (Page 01h) and Register
6Ah (Page 01h).
Mono I/O should report relevant sense and function information on Tip, and report
not supported on Ring.
Setting the function code to unsupported values will return a 0 when accessing the
Information Valid Bit in page 01 register 68h bit 5.
Tip or Ring selection Bit.This bit sets which jack conductor the sense value is
measured from. Software will program the corresponding the Ring/Tip selector bit
together with the I/O number in bits FC[3:0].
0 - Tip (Left)
1 - Ring (Right)
PCI Sub System ID:
This field provides the PCI Sub System ID of the Audio or Modem Sub Assembly
(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.
Page 01h
D13
D5
Setting the T/R bit to 0 = Left,1 = Right
)
FC3
D12
71
D4
RESERVED
D11
FC2
D3
Description
Description
STAC9766/9767
D10
FC1
D2
FC0
D9
D1
PC AUDIO
V 7.4 12/06
T/R
D8
D0