參數(shù)資料
型號: BA7797
廠商: Rohm CO.,LTD.
英文描述: VCR standard audio signal processor
中文描述: 錄像機(jī)標(biāo)準(zhǔn)音頻信號處理器
文件頁數(shù): 6/8頁
文件大?。?/td> 108K
代理商: BA7797
6
Video ICs
BA7797F
Control pins
(1) REC / EE control, PB / TU / LINE control
Function
L
L
LINE
OFF
ON
LINE
OFF
L
M
TUNER
OFF
ON
TUNER
OFF
L
H
PB
OFF
ON
PB
OFF
H
L
ON
OFF
LINE
ON
H
M
ON
OFF
TUNER
ON
H
H
inhibit
REC / EE
PB / TU / LINE
PB HSW
REC HSW
LINE SW
REC AMP
LINE REC
TU REC
Mode
If REC / EE CTRL is set to "M", the REC pause state is possible (REC head switch: open, REC amplifier: off).
Control mode table
MUTE
H
MUTE
OPEN
L
MUTE
CLOSE
LINE SW
Mode
Control pins
Function
(2) Mute control
Application example
1
3
3
REC + B
LINE
ALC
P
R
R
0dB
BIAS
OSC
EQ
REC AMP
0
μ
RL
CTRL
B
M
8
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
3
μ
+
2
μ
0
μ
REC / EE
+ 28dB
V
CC
ATT
– 8dB
ATT
– 8dB
EQ CTRL
TUNER IN
PB / TU / LINE CTRL
LINE IN
MUTE CTRL
ALC LEVEL ADJ
LINE OUT
EQ CTRL
2
μ
3
μ
0
μ
0
μ
Units: R [
]
C [F]
Fig.3
+
+
+
+
+
+
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