TDA7529 datasheet(18/60 Pages) STMICROELECTRONICS

18 / 60 page

Function description

TDA7529

18/60

= must be "0" for reading, can be "1" or "0" for writing to the TDA7529

= determinates the direction of data transfer, reading or writing

R / W

= indicates the address to read to and/or to write from a single TDA7529

= indicates those addresses that can be used to transmit equal data to several TDA7529 frontends. A

read out has no purpose for these addresses (data collision), but must be possible without damaging

the tuner IC.

The two serial bus protocols, I2C and SPI, are as follows:

Figure 6.

I2C (sub address mode)

Figure 7.

SPI

Data auto increment mode is always active regardless of the serial bus mode chosen.

Table 7.

I2C addresses

Tuner:

Tuner 3

Tuner 2

Tuner 1

level at pin AS

2.2V – 3.5V

1.1V – 1.7V

0.0V – 0.6V

address:

1100 1xxd

1100 x1xd

1100 xx1d

MSB ... LSB

1100 000d

1100 001d

R / W

1100 010d

R / W

1100 011d

1100 100d

R / W

1100 101d

1100 110d

1100 111d

R/W

4th byte

data byte N+1

address

1st byte

2nd byte

subaddress N

3rd byte

data byte N

AC00043

R/W

4th byte

data byte N+2

1st byte

subaddress N

2nd byte

3rd byte

data byte N

data byte N+1

AC00044

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