VT1616 데이터 시트보기 (PDF) - Unspecified
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VT1616 Datasheet PDF : 40 Pages
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VT1616 6-Channel AC97 Codec with S/PDIF
Mono Output Control Register (Index 06h)
D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 Default
Mute –
–
–
–
–
–
–
–
–
– MM4 MM3 MM2 MM1 MM0 8000h
Mute
MM[4:0]
Mono Output Mute Control
“1” : Mute enabled
“0” : Mute disabled
Mono Output Volume Control
These five bits select the level of attenuation applied to the Mono Output signal. The level of
attenuation is programmable from 0dB to -46.5dB in 1.5dB increments, providing a total of 32
programmable levels. Please refer to Table 2 on page 10 for details.
Table 2. Stereo and Mono Output Attenuation
M4 M3 M2 M1 M0
0
0
0
0
0
0
1
0
0
0
0
1
2
0
0
0
1
0
3
0
0
0
1
1
4
0
0
1
0
0
5
0
0
1
0
1
..
..
..
..
..
..
..
..
..
..
..
..
28
1
1
1
0
0
29
1
1
1
0
1
30
1
1
1
1
0
31
1
1
1
1
1
Level (dB)
0.0
-1.5
-3.0
-4.5
-6.0
-7.5
..
..
-42.0
-43.5
-45.0
-46.5
PC Beep Input Volume Control Register (Index 0Ah)
D15 D14 D13 D12 D11 D10 D9 D8 D7 D6
Mute –
–
–
–
–
–
–
–
–
D5 D4 D3 D2 D1 D0 Default
– PV3 PV2 PV1 PV0 – 8000h
Mute
PV[3:0]
PC Beep Input Mute Control
“1” : Mute enabled
“0” : Mute disabled
PC Beep Input Volume Control
These four bits select the level of attenuation applied to the PC beep input signal. The level of
attenuation is programmable from 0dB to -45dB in 3dB increments, providing a total of 16
programmable levels. The beep gain is set at 0dB when PV[3:0] = 0h. Even though the default of
the input volume control is mute, as long as RESET# is active, PC Beep will be passively routed to
the line outputs.
Revision 1.5, October 11, 2002
10
Data Sheet
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