TDA7316 datasheet(7/10 Pages) STMICROELECTRONICS

7 / 10 page

SOFTWARE SPECIFICATION

Interface Protocol

The interface protocol comprises:

A start condition (s)

A chip address byte, containing the TDA7316

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

TDA7316 must always acknowledge at the end

of each transmitted byte.

A sequence of data (N-bytes + acknowledge)

A stop condition (P)

TDA7316 ADDRESS

MSB

first byte

LSB

MSB

LSB

MSB

LSB

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 (84 or 86 Hex)

MSB

LSB

A = Logic level on pin ADDR

A = 1 if ADDR pin = open

A = 0 if ADDR pin = connected to ground

SOFTWARE SPECIFICATION (continued)

DATA BYTES (detailed description)

Volume

MSB

LSB

FUNCTION

Volume 0.375dB steps

-0.375

-0.75

-1.125

-1.5

-1.875

-2.25

-2.625

Volume -3dB steps

-3

-6

-9

-12

-15

TDA7316

7/10

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