STAC9752A Datasheet, PDF (75/106 Pages) Integrated Device Technology – AC’97 2.3 CODECS WITH STEREO MICROPHONE & UNIVERSAL JACK

STAC9752A/9753A
AC’97 2.3 CODECS WITH STEREO MICROPHONE & UNIVERSAL JACK
PC AUDIO
Bit(s) Reset Value Name
Description
15-5
Reserved Reserved
Function Code bits:
00h - Line Out (Master Out)
01h - Head Phone Out (AUX Out)
Setting the T/R bit to 0 = Left, 1 = Right
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
4-1
00h
FC3:FC0 0Ah - Aux In
0Bh - Mono Out
0C-0Fh - Reserved
For supported Jack and Mic Sense Functions, see Table22: page75.
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.
0
0
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
T/R together with the I/O number in bits FC[3:0].
0 - Tip (Left)
1 - Ring (Right)
Note: This register does not reset on RESET#.
Table 22. Supported Jack and Mic Sense Functions
Function Code
00h
01h
05h
06h
I/O
Line_Out
Headphone_Out
Mic1
Mic2
Sense Capability
Jack Sense
Jack Sense
Mic Sense
Mic Sense
7.4.5.
Function Information (68h Page 01h)
Register 24h must be set to Page 01h to access this register.
IDT™
75
AC’97 2.3 CODECS WITH STEREO MICROPHONE & UNIVERSAL JACK
STAC9752A/9753A
V 1.5 1206