MSB

F6

F5

F4

F3

F2

F1

LSB

1st VOLUME

0

F6F5

F4

F3F2

F1

0

2nd VOLUME

0

F6F5

F4

F3F2

F1

1

TREBLE

10

0

F4

F3

F2

F1

F0

MIDDLE

10

1

F4

F3

F2

F1

F0

BASS

11

0

F4

F3

F2

F1

F0

MUTMUX

11

1

F4

F3

F2

F1

F0

POWER ON RESET:

1st volume = 2nd volume = Mute

Treble = Middle = Bass = -14dB

Mutmux = Active Input IN 1

FUNCTION CODES

TDA7339 ADDRESS

MSB

first byte

LSB

MSB

LSB

MSB

LSB

S

1

00

0

0

1A

0

ACK

DATA

ACK

DATA

ACK

P

Data Transferred (N-bytes + Acknowledge)

ACK = Acknowledge

S = Start

P = Stop

MAX CLOCK SPEED 100kbits/s

SOFTWARE SPECIFICATION

Chip address

1

MSB

00

00

1

A

0

LSB

A = Logic level ON pin ADDR

SOFTWARE SPECIFICATION

Interface Protocol

The interface protocol comprises:

A start condition (s)

A chip address byte, containing the TDA7339

address (the 8th bit of the byte must be 0). The

TDA7339 must always acknowledge at the end

of each transmitted byte.

A sequence of data (N-bytes + acknowledge)

A stop condition (P)

TDA7339

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