TDA7342EQ2N

Software specification

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5

Software specification

5.1

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)

ACK

= Acknowledge

S

= Start

P

= Stop

I

= Auto Increment

X

= Not used

ADDR = Open/Gnd

A = O

A = I

MAX CLOCK SPEED 500kbits/s

5.2

Auto increment

If bit I in the subaddress byte is set to "1", the autoincrement of the subaddress is enabled

S

1

0

0

0

1

0

A

R/W

ACK

I

ACK

DATA

ACK

P

MSB

LSB

MSB

LSB

MSB

LSB

CHIP ADDRESS

D06AU1650

XXX

SUBADDRESS

DATA 1 ... DATA n

Table 5.

SUBADDRESS (receive mode)

MSB

LSB

Function

X

X

X

I

A3

A2

A1

A0

0

0

0

0

Input Selector

0

0

0

1

Loudness

0

0

1

0

Volume

0

0

1

1

Bass, Treble

0

1

0

0

Speaker Attenuator LF

0

1

0

1

Speaker Attenuator LR

0

1

1

0

Speaker Attenuator RF

0

1

1

1

Speaker Attenuator RR

1

0

0

0

Mute