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CXA2078Q

I²C Bus-Compatible Audio/Video Switch with Electronic Volume

Sony Semiconductor 

Pin

No.

Symbol

Pin

voltage

12 ADR

40 HW MUTE

—

43 LOG_4

44 LOG_3

45 LOG_2

—

46 LOG_1

CXA2078Q

Equivalent circuit

VCC = 12V

147 72k

12

40

28k

Description

HW MUTE: This pin is

active high > 2.5V.

When high, audio outputs

RTV, LTV and MONO are

muted.

ADR: Selects the I2C

address for the IC.

< 1.5V = Low Add = 90H

> 2.5V = High Add = 92H

VCC = 12V VCC = 9V

3V

43

44

45

46

4.5k 7.5k

8µA

40k

Open collector logic Pins.

Maximum current sink

= 1mA

35 TRAP

3.9V

VCC = 12V

1k

35

147

VCC = 9V

470µA

Connection to external

trap circuit.

Trap components should

be kept as close as

possible to this pin.

53

FBLK_

OUT

—

VCC = 12V

100

100µA

VCC = 9V

53

100µA

Fast Blank output set by

I2C, FBLK_IN1 or

FBLK_IN2.

High = 5.1V

Low = 1.2V

Connected to external

emitter follower.

Maximum load current

= 800µA

–7–

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