BA7796FS 데이터 시트보기 (PDF) - ROHM Semiconductor

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BA7796FS

VCR standard audio signal processor

ROHM Semiconductor 

Video ICs

BA7796FS

~V BVRHAC

100k

SW3

0.1µ

100k

V V3

0.1µ

1

PB IN

2

3

4

REC OUT

1k

~ e3

Fig. 2 REC head switch AC withstanding voltage measurement circuit

•Control mode table

(1) REC / EE CTRL, PB / EE CTRL, INPUT SW CTRL

REC / EE

L

L

L

L

H

H

H

H

Control pins

PB / EE

L

L

L

H

L

L

L

H

INPUT SW

L

M

H

—

L

M

H

—

Mode

TUNER

LINE2

LINE1

PB

TU REC

L2 REC

L1 REC

inhibit

PB HSW

OFF

OFF

OFF

OFF

ON

ON

ON

—

Function

REC HSW LINE SW

ON

TUNER

ON

LINE2

ON

LINE1

ON

PB

OFF

TUNER

OFF

LINE2

OFF

LINE1

—

—

If REC / EE CTRL is set to“M”, the REC pause state is possible (REC head switch: open, REC amplifier: off).

REC AMP

OFF

OFF

OFF

OFF

ON

ON

ON

—

(2) MUTE CTRL

Control pins

MUTE

H

L

Function

Mode

LINE SW

MUTE OPEN

MUTE CLOSE

(3) EQ CTRL

Control pins

EQ

L

M

H

Mode

Function

2 MODE 3 MODE HEAD EQ PB EQ REC EQ

SP

SP

OFF

CLOSE CLOSE

—

LP

ON

OPEN CLOSE

EP

EP

ON

OPEN OPEN

7

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