bh7272kv ROHM Co. Ltd., bh7272kv Datasheet - Page 6

• Manufacturer Part Number: bh7272kv
• Description: Two-channel Amplifier Digital Vcrs
• Manufacturer: ROHM Co. Ltd.

•
(1) Control logic table
(2) Mute circuit
(3) AGC DET GATE circuit
6
After recording
Video ICs
AGC DET GATE
Circuit operation
REC PAUSE
MUTE 33pin
Notes
Mode
REC
PB
Notes
Notes
32pin
PB-H
46pin
H
H
H
H
H
H
L
L
L
L
L
Low: 1V or less
High: 2V or more
Low: 1V or less
High: 2V or more
33pin
32pin
H
H
REC-H
L
L
Low: 1V or less
High: 2V or more
17pin
Control signals
: Irrelevant
H
H
H
H
H
H
H
H
L
L
L
45pin
HSW
AGC detection on
AGC detection off
H
H
H
H
H
L
L
L
L
L
MUTE OFF
MUTE ON
Operation
Operation
—
—
REC GATE
18pin
H
H
H
H
L
L
L
L
REC
1
1
1
1
1
1
1
1
REC-A
1
1
1: Operating
REC-B
: Power save state
Circuit operation
1
1
PB
1
1
1
1
1
1
PB-A
BH7272KV
1
1
PB-B
1
1