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TDA7416

2.1 Interface Protocol

The interface protocol comprises:

-a start condition (S)

-a chip address byte (the LSB bit determines read / write transmission)

-a subaddress byte

-a sequence of data (N-bytes + acknowledge)

-a stop condition (P)

S = Start

R/W = “0” -> Receive-Mode (Chip could be programmed by µP)

“1” -> Transmission-Mode (Data could be received by µP)

ACK = Acknowledge

P = Stop

MAX CLOCK SPEED 500kbits/s

2.1.1 Auto increment

If bit I in the subaddress byte is set to “1”, the auto increment of the subaddress is enabled.

2.1.2 TRANSMITTED DATA (send mode)

SM = Soft mute activated

X = Not Used

The transmitted data is automatically updated after each ACK.

Transmission can be repeated without new chip address.

2.1.3 Reset Condition

A Power-On-Reset is invoked if the Supply-Voltage is below than 3.5V. After that, the following data is written

automatically into the registers of all subaddresses:

The programming after POR is marked bold-face / underlined in the programming tables.

CHIP ADDRESS

SUBADDRESS

DATA 1...DATA n

MSB

LSB

MSB

LSB

MSB

LSB

S 1 0 0 0 1 1 0 R/W ACK

T

AZ

I

AA

AAA

ACK

DATA

ACK

P

MSB

LSB

XX

X

X

X

X

X

SM

MSB

LSB

11

1

1

1

1

1

0