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LM4857 Datasheet, PDF (28/38 Pages) National Semiconductor (TI) – Stereo 1.2W Audio Sub-system with 3D Enhancement
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Application Information (Continued)
TABLE 5. Mixer and Output Mode Control
Mode CD3 CD2 CD1 CD0 Mono
Mono Earpiece Loudspeaker Loudspeaker Headphone
Line Out (CD4 = 0) (CD4 =
L
R
L
1)
000
00
SD
SD
SD
SD
SD
SD
1
0
0
0 1 MUTE (GM x M) 2(GM x
SD
M)
SD
MUTE
2 0 0 1 0 MUTE
SD
SD
2(GM x M) 2(GM x M)
MUTE
3 0 0 1 1 MUTE
SD
SD
2(GM x M) 2(GM x M) (GM x M)
4 0 1 0 0 MUTE
SD
SD
SD
SD
(GM x M)
5
0
1
0 1 (GM x M)
SD
SD
SD
SD
MUTE
6
0
1
1 0 MUTE (GL x L) + 2(GL x
SD
SD
MUTE
(GR x R) L) +
2(GR x
R)
7 0 1 1 1 MUTE
SD
SD
2(GL x L)
2(GR x R)
MUTE
8 1 0 0 0 MUTE
SD
SD
2(GL x L)
2(GR x R)
(GL x L)
9 1 0 0 1 MUTE
SD
SD
SD
SD
(GL x L)
10 1
0
1 0 (GL x L) +
SD
SD
SD
SD
MUTE
(GR x R)
11 1
0
1 1 MUTE (GM x M) + 2(GM x
SD
SD
MUTE
(GL x L) + M) +
(GR x R) 2(GL x
L)
+2(GR x
R)
12 1 1 0 0 MUTE
SD
13 1 1 0 1 MUTE
SD
14 1 1 1 0 MUTE
SD
15 1
1
1 1 (GM x M)
SD
+(GL x L)
+(GR x R)
M - MIN Input Level
L - LIN Input Level
R - RIN Input Level
GM - Mono Volume Control Gain
GL - Left Stereo Volume Control Gain
GR - Right Stereo Volume Control Gain
SD - Shutdown
MUTE - Mute
SD 2(GL x L) + 2(GR x R) +
MUTE
2(GM x M) 2(GM x M)
SD 2(GL x L) + 2(GR x R) + (GL x L) +
2(GM x M) 2(GM x M) (GM x M)
SD
SD
SD
(GL x L) +
(GM x M)
SD
SD
SD
MUTE
Headphone
R
SD
MUTE
MUTE
(GM x M)
(GM x M)
MUTE
MUTE
MUTE
(GR x R)
(GR x R)
MUTE
MUTE
MUTE
(GR x R) +
(GM x M)
(GR x R) +
(GM x M)
MUTE
LD5
RD5
TABLE 6. National 3D Enhancement
0
Loudspeaker National 3D Off
1
Loudspeaker National 3D On
0
Headphone National 3D Off
1
Headphone National 3D On
CD5
TABLE 7. Wake-up Time Select
0
Fast Wake-up Setting
1
Slow Wake-up Setting
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