STAC9758 Datasheet, PDF (99/119 Pages) Integrated Device Technology – HIGH-PERFORMANCE 6-CHANNEL AC’97 2.3 CODEC WITH UNIVERSAL JACKS

STAC9758/9759
HIGH-PERFORMANCE 6-CHANNEL AC’97 2.3 CODEC WITH UNIVERSAL JACKS™
PC AUDIO
Bit(s) Reset Value R/W
Name
Description
7
0
RW
DAC-CR INV
0 = Single bit DAC Data 5 not inverted
1 = Single bit DAC Data 5 is inverted
0 = MUTE FIX Enabled
1 = MUTE FIX Disabled
When MUTEFIX_DISABLE = 0, a volume setting of 1Fh on either
channel of Reg 02h, Reg 04h, Reg 06h, Reg 36h, or Reg 38h will
6
0
RW MUTEFIX DISABLE cause a mute on that channel. This is independent of the other
channel.
When MUTEFIX_DISABLE = 1, a setting of 1F will cause -46.5dB
attenuation on the output. With this setting only the mute bit(s) will
cause a mute.
Select slots for ADC data on ACLINK
00 = left slot 3, right slot 4
01 = left slot 7, right slot 8
10 = left slot 6, right slot 9
5:4
0
RW
ADCSLT1:0
11 = left slot 10, right slot 11
This bit field is only active when the MV bit (Reg 6Eh, Page 01,
Bit0) is zero. If the MV bit is set, then this bit field has no effect,
and the alternate ADC slot mapping registers in Reg 6Eh, Page 01
are used instead.
3
0
RW
HP_APOP DISABLE
0 = HP APOP Enabled
1 = HP APOP Disabled
Adds +10dB gain to the selected MIC input. Use in conjunction
with BOOSTEN (Reg. 0Eh;D6)
BOOSTEN MICGAINVAL
2
0
RW MIC GAIN VAL 0
0
= 0 dB
0
1
= 10 dB
1
0
= 20 dB
1
1
= 30 dB
Supply Override bit allows override of the supply detect.
1
0
RW SPLYOVR_EN 0 = no override on supply detect
1 = override supply detect with bit 0
Supply Override Value provides the analog voltage operation
0
0
RW
SPLYOVR_VAL
values.
0 = force 3.3 V operation
1 = force 5 V operation
IDT™
99
HIGH-PERFORMANCE 6-CHANNEL AC’97 2.3 CODEC WITH UNIVERSAL JACKS™
STAC9758/9759
V 1.2 1206