LA7477W Ver la hoja de datos (PDF) - SANYO -> Panasonic
Número de pieza
componentes Descripción
Fabricante
LA7477W Datasheet PDF : 12 Pages
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LA7477W
Headphone, Speaker, and Line Out Output States
MODE
Bit 6
REC
0
PB
0
EE
0
POWER SAVE
*1
Headphone and speaker switches
1
Notes. *1 : These are don't care states.
Serial data
Bit 23
0
0
1
1
*1
Bit 24
0
1
0
1
*1
Headphone
ON
ON
ON
OFF
OFF
Output
Speaker
ON
ON
ON
OFF
OFF
Line out
*2
*2
*2
OFF
*2
*2 : In states other than power saving mode, this state does not depend on bits 6, 23, and 24 in the data, but rather
is controlled by bit 19 in the data.
Furthermore, the speaker output can be controlled by bits 20 and 21 in the serial data, and has the logic shown below in
each mode. However, note that the input selector goes to microphone mode if bits 20 and 21 are (1, 1).
The table below lists the speaker output control logic in each mode.
Serial data
Bit 20
Bit 21
0
0
0
1
1
0
1
1
REC
ON
ON
ON
OFF
PB
ON
ON
ON
OFF
EE
ON
ON
ON
OFF
POWER SAVE
OFF
OFF
OFF
OFF
Note than in record mode, if bits 20 and 21 are (0, 0), care is require when using this IC, since the speakers will be turned
on at the same time as the system switches to microphone mode.
Output Signal Table
Bit 15
0
1
0
1
0
1
Serial data
Bit 16
0
0
0
0
1
1
Bit 17
0
0
1
1
0
0
Line Left channel
L
L+R
L
L+R
R
L+R
Headphone Left
L
L
L
L
R
R
Output
Speaker
L+R
L+R
L
L
R
R
Headphone Right
R
R
L
L
R
R
Line Right channel
R
R
L
L
R
R
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