alc658 Realtek Semiconductor Corporation, alc658 Datasheet - Page 29

• Manufacturer Part Number: alc658
• Description: Six-channel Ac?97 2.3 Audio Codec
• Manufacturer: Realtek Semiconductor Corporation

6.2.4.
Default: 0808H
6.2.5.
Default: 0000h
This register is used to control various parts of the ALC658 multi-channel functions.
Six-Channel AC’97 2.3 Audio Codec
For LD/CD:
The default value is 0808H (unmuted).
13:12
14:13
12:8
Bit
15
14
11
10
7:5
4:0
Bit
15
9
8
7
6
5
4
3
Type
MX66 Center/LFE DAC Volume
MX6A Data Flow Control
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Type
R/W
R/W
R/W
-
-
00h
08h
1Fh
Function
S/PDIF-IN Enable
0: Disable (Default)
S/PDIF-IN Monitoring Control
0: Disable, S/PDIF-IN data is not added to PCM data sent to DAC. (Default)
1: Enable, S/PDIFI-IN data will be added to PCM data to DAC.
S/PDIF-Out Source
00:S/PDIF-Out data is from ACLINK controller. (Default)
01:S/PDIF-Out data is from 1
10: S/PDIF-Out data is from 2
11: Buffered S/PDIF-IN signal is passed through to S/PDIF-Out.
Recorded PCM Data to ACLINK (SDATA-IN Slot 3/4)
0: Recorded PCM data to host is from ADC
1: Recorded PCM data to host is from S/PDIF-IN
MIC1 & MIC2/CENTER & LFE Output Control
0: Pin-21 is MIC1, pin-22 is MIC2 (Default)
1: Pin-21 is CENTER-Out, pin-22 is LFE-Out.
Line-In/Surround Output Control
0: pin-23 and pin-24 are analog input (Line-In). (Default)
1: pin-23 and pin-24 are duplicated output of surround channel (Surround-Out)
2
0: Stereo mix. (Default)
1: Left channel is from MIC-L, right channel is from MIC-R
FRONT-MIC Control
0: Enable (Default)
MIC Record Source
0: Mono duplicated. (Default)
Analog Input Pass to Center/LFE Control
0: off (Default)
Analog Input Pass to Surround Control
0: off (Default)
Ignore V bit in sub-frame of S/PDIF-IN
Function
Mute Control 0: Normal
Reserved
LFE DAC Volume (LD[4:0]) in 1.5 dB steps
Reserved
Center DAC Volume (CD[4:0]) in 1.5 dB steps
nd
Stereo ADC Record Select
+12 dB Gain
0 dB Gain
-34.5 dB Gain
Table 38. MX66 Center/LFE DAC Volume
Table 39. MX6A Data Flow Control
1: Enable
1: on
1: on
1: Mute (-∞ dB)
st
nd
ADC.
ADC.
1: Disable
1: Stereo
25
Datasheet
ALC658
Rev. 1.3