CXA2040 데이터 시트보기 (PDF) - Sony Semiconductor

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CXA2040

I2C Bus-Compatible Video Switch

Sony Semiconductor 

CXA2040Q

I2C Bus Control Map

1) Control Register

The CXA2040Q control system is comprised of 4 bytes of control registers which control the various outputs.

The inputs which are to be output are selected by writing the respective input data into the control register.

S Slave address A DATA1 A DATA2 A DATA3 A DATA4 A P

S: START CONDITION

A: ACKNOWLEDGE

P: STOP CONDITION

• Slave address

100100X0

R/W bit

This bit is set to "0" when data is to be written into the control

registers.

Value set by the address pin

DATA1 Controls the video output 1.

DATA2 Controls the video output 2.

DATA3 Controls the video output 3.

DATA4 Controls the S terminal output.

bit7 bit6 bit5 bit4 bit3 bit2 bit1 bit0

X X video select X X X

Each register is set to "0" upon POWER ON.

• Video switch control map

bit5 bit4 bit3 Selected input signal

0 0 0 MUTE

0 0 1 CV1/YC1

0 1 0 CV2/YC2

0 1 1 CV3

1 0 0 CV4

1 0 1 CV5

1 1 0 CV6

1 1 1 CV7

Other conditions: MUTE

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