TDA8440C3 datasheet(5/12 Pages) PHILIPS

5 / 12 page

November 1985

Philips Semiconductors

Product speciﬁcation

Switch for CTV receivers

TDA8440

I2C BUS CONTROL

Detailed information on the I2C bus is available on request.

Table 2

TDA8440 I2C bus protocol.

OFF FUNCTION

With the OFF input all outputs can be switched off (mode high ohmic), depending on the value of D0.

STA

R/W

STO

STA

start condition

Fixed address bits

sub-address bit, ﬁxed via S2 input

sub-address bit, ﬁxed via S1 input

sub-address bit, ﬁxed via S0 input

R/W

read/write bit (has to be 0, only write mode allowed)

acknowledge bit (= 0) generated by the TDA8440

1 audio la is selected to audio output a

0 audio la is not selected

1 audio lla is selected to audio output a

0 audio lla is not selected

1 audio lb is selected to audio output b

0 audio lb output is not selected

1 audio llb is selected to audio output b

0 audio llb is not selected

1 video l is selected to video output

0 video l is not selected

1 video ll is selected to video output

0 video ll is not selected

1 video ampliﬁer gain is times 2

0 video ampliﬁer gain is times 1

1 OFF-input inactive

0 OFF-input active

STO

stop condition

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