alc203-lf Realtek Semiconductor Corporation, alc203-lf Datasheet - Page 30

• Manufacturer Part Number: alc203-lf
• Description: Two-channel Ac?97 2.3 Audio Codec
• Manufacturer: Realtek Semiconductor Corporation

6.4.3 MX7A Miscellaneous Control
Default: 0000h
6.4.4 MX7C Vendor ID1
The two registers (MX7C Vendor ID1 and MX7E Vendor ID2) contain four 8-bit ID codes. The first three codes have been
assigned by Microsoft for Plug and Play definitions. The fourth code is a Realtek assigned code identifying the ALC203. The
MX7C Vendor ID1 register contains the value 414Ch, which is the first and second characters of the Microsoft ID code. The
MX7C Vendor ID2 register contains the value 4770h, which is the third of the Microsoft ID code
Default: 414Ch
6.4.5 MX7E Vendor ID2
Default: 4770h
Two-Channel AC’97 2.3 Audio Codec
15:11
15:0
15:8
Bit
7:6
Bit
Bit
7:0
10
9
8
5
4
3
2
1
0
Type
Type
Type
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
NA
NA
R
R
R
R
Reserved
Device ID – 70h for ALC203
Pin-37 Function Selection (MONO-OUT or Vrefout3)
Vrefout Off Control
Vrefout / Vrefout2 / Vrefout3 Level Control
Reserved
Source of Jack-Detect status for MX7A.1
HP-OUT Control
MONO-OUT Control
SPDIF Output Gating
Status of Jack-Detect 1 or 2 (JDSx)
LINE-OUT Output Control
Vendor ID “AL”
Vendor ID - “G”
0: Vrefout3
1: MONO-OUT
0: Vrefout is normal on (output of buffered Vref).
1: Vrefout is off. (In High-Z).
0: 2.5V 1: 4.0V
0: MX7A.1 indicates the status of Jack-Detect 1
1: MX7A.1 indicates the status of Jack-Detect 2
1: JDSx is floating or pull high
0: Normal
1: HP-OUT is muted by H/W when MX7A.1=1
0: Normal
1: MONO-OUT is muted by H/W when MX7A.1=1
0: SPDIF output is not gated with MX7A.1
1: SPDIF output is gated with MX7A.1. (SPDIFO is forced to 0 if MX7A.1=0)
0: JDSx is pull low
0: Normal
1: LINE-OUT output is muted by H/W when MX7A.1=1
26
Function
Function
Function
ALC203 DataSheet
Rev1.6