CXA2089 データシートの表示（PDF） - Sony Semiconductor

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CXA2089

S2-Compatible 5-Input 2-Output Audio/Video Switch

Sony Semiconductor 

Pin

No.

Symbol

Pin

voltage

26 (32) SCL

—

27 (33) SDA

—

28 (34) DC OUT

—

42 (48) TRAP1

3.8V

Equivalent circuit

VCC

4k

26

10k

VCC

4k

27

VCC

4k

1k

28

Q1

28k

VCC

100

42

1k

CXA2089Q/S

Description

I2C bus signal input

VILmax = 1.5V

VIHmin = 3.0V

I2C bus signal input

VILmax = 1.5V

VIHmin = 3.0V

VOLmax = 0.4V

Outputs the S2-compatible DC

superimposed onto the COUT2

output. The DC is superimposed by

connecting this pin to the COUT2

output via a capacitor.

Control is performed by the I2C bus.

When 0V is output, Q1 is ON and

the impedance is 5kΩ.

S2 protocol output DC impedance of

10 ± 3kΩ is realized by attaching

external resistance of 4.7kΩ.

DC OUT (bus) Output DC

0

4.5V

1

0V

2

1.9V

3

4.5V

Connects trap circuit for subcarrier.

35 (41) MUTE

—

37 (43) BIAS

4.5V

VCC

147 72k

35

28k

VCC VCC

VCC

20k 147

37

20k

–7–

Audio signal output mute.

Mute OFF at 1.5V or less

Mute ON at 2.5V or more

Mute OFF when open

Internal reference bias (Vcc/2).

Connects to GND via a capacitor.

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