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參數資料
| 型號： | LA7477W |
| 廠商： | SANYO SEMICONDUCTOR CO LTD |
| 元件分類： | 消費家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP48 |
| 封裝： | 7 X 7 MM, SQFP-48 |
| 文件頁數： | 11/12頁 |
| 文件大小： | 129K |
| 代理商： | LA7477W |
LA7477W
No.5775-8/12
Headphone, Speaker, and Line Out Output States
Serial data
Output
MODE
Bit 6
Bit 23
Bit 24
Headphone
Speaker
Line out
REC
0
ON
*2
PB
0
1
ON
*2
EE
0
1
0
ON
*2
POWER SAVE
*1
1
OFF
Headphone and speaker switches
1
*1
OFF
*2
Notes.
*1 : These are don't care states.
*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
REC
PB
EE
POWER SAVE
0
ON
OFF
0
1
ON
OFF
1
0
ON
OFF
1
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
Serial data
Output
Bit 15
Bit 16
Bit 17
Line Left channel
Headphone Left
Speaker
Headphone Right
Line Right channel
0
L
L + R
R
1
0
L + R
L
L + R
R
0
1
L
1
0
1
L + R
L
0
1
0
R
1
0
L + R
R
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