A

CHIP ADDRESS

0

DC (HEX)

1

DE (HEX)

SOFTWARE SPECIFICATION

Interface Protocol

The interface protocol comprises:

A start condition (s)

A chip address byte, containing the TDA7346

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

TDA7346 must always acknowledge at the end

of each transmitted byte.

A sequence of data (N bytes + achnowledge).

A stop condition (P)

TDA7346 ADDRESS

MSB

first byte

LSB

MSB

LSB

MSB

LSB

S

1

10

1

1

1A

0

ACK

DATA

ACK

DATA

Data Transferred (N-bytes + Acknowledge)

ACK = Acknowledge

S = Start

P = Stop

MAX CLOCK SPEED 100kbits/s

SOFTWARE SPECIFICATION

Chip address

1

MSB

1011

1

A

0

LSB

A = Logic level on pin ADDR

A = 1 if ADDR pin = open

A = 0 if ADDR pin = connected to ground

MSB

LSB

SUBADDRESS

0

0

A5

A4

A3

A2

A1

A0

INPUT ATTENUATION R

0

1

A5

A4

A3

A2

A1

A0

INPUT ATTENUATION L

1

M1

M0

SURROUND MODES

1

0

0

SIMULATED MODE

1

0

1

MUSIC MODE

1

1

0

MOVIE MODE

11111

111

OFF MODE

1

M1

M0

1

B3

B2

B1

B0

EFFECT CONTROL

1

M1

M0

0

0

0

C1

C0

PHASE SHIFTER 4 CONTROL

1

M1

M0

0

0

1

C1

C0

PHASE SHIFTER 3 CONTROL

1

M1

M0

0

1

0

D1

D0

PHASE SHIFTER 2 CONTROL

1

M1

M0

0

1

1

E1

E0

PHASE SHIFTER 1 CONTROL

Software Specification

TDA7346

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