cxa2149q Sony Electronics, cxa2149q Datasheet

cxa2149q

Manufacturer Part Number

cxa2149q

Description

I2c-bus-compatible Audio/video Switch

Manufacturer

Sony Electronics

Datasheet

1.CXA2149Q.pdf (25 pages)

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Description

featuring I

input pins that are compatible with the SCART

protocols. It offers other features such as an

electronic mute function with switching noise

reduction (zero cross detection), electronic volume

control, automatic SYNC pulse detection, and group

delay control.

Features

• 3 CVBS inputs.

• 2 CVBS outputs.

• Group delay control on TV and CVIN1.

• SYNC ID on TV and CVIN1.

• 3 Y/C inputs.

• 2 Y/C outputs.

• 6 L/R/2 inputs.

• 3 L/R/2 outputs.

• Mode inputs compatible with the SCART protocol.

• 3 Y/C mixer circuits.

• Audio muting via software control.

• External muting input.

• Audio switching noise elimination circuit.

• Volume adjustment via software control on L/R

• Wide band video amplifiers (20 MHz, –3 dB).

• Wide audio dynamic range (3 Vrms typ)

• Serial control via I

• Separate control of video and audio switches.

• High impedance maintained by I

• Configurable dual slave address 90/92.

• I

Applications

Structure

The CXA2149Q is a video and audio switch IC

channel 3.

SCL) even when power is off.

TV’s

Bipolar silicon monolithic IC

C bus 5 and 3.3 V compatible.

C-Bus-Compatible Audio/Video Switch

Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by

any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the

operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits.

C bus compatibility for TV’s. The IC has

C bus.

C lines (SDA,

—1—

Absolute Maximum Ratings

• Supply voltage

• Storage temperature

• Allowable power dissipation

Operating Conditions

• Supply voltage

• Typical supply current

• Operating temperature

CXA2149Q

64 pin QFP (Plastic)

Topr

Tstg

(Ta=25 °C unless stated)

–65 to +150

–20 to +75

9+/–0.5

900

E99946A9Y-TE

°C

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