TDA7315D 查看數據表（PDF） - STMicroelectronics

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TDA7315D

DIGITAL CONTROLLED AUDIO PROCESSOR

STMicroelectronics 

Figure 15: Typical Tone Response (with the ext.

components indicated in the test

circuit)

TDA7315

SOFTWARE SPECIFICATION

Interface Protocol

The interface protocol comprises:

A start condition (S)

A chip address byte, containing the TDA7315

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

TDA7315 must always acknowledge at the end

of each transmitted byte.

A sequence of data (N-bytes + acknowledge)

A stop condition (P)

TDA7315 ADDRESS

MSB first byte

LSB MSB

S 1 0 0 0 0 0 0 0 ACK

ACK = Acknowledge

S = Start

P = Stop

MAX CLOCK SPEED 100kbits/s

DATA

LSB MSB

ACK

DATA

Data Transferred (N-bytes + Acknowledge)

LSB

ACK P

SOFTWARE SPECIFICATION

Chip address = 80 Hex

1

0

0

0

0

0

MSB

0

0

LSB

DATA BYTES

MSB

0

0

1

0

1

0

0

1

0

1

0

1

B2

B1

B0

A2

A1

0

B1

B0

A2

A1

1

B1

B0

A2

A1

0

X

X

L

X

1

0

C3

C2

C1

1

1

C3

C2

C1

Ax = 1.25dB steps; Bx = 10dB steps; Cx = 2dB steps; X = don‘t care.

LSB

FUNCTION

A0

Volume control

A0

Speaker ATT L

A0

Speaker ATT R

X

Loudness

C0

Bass control

C0

Treble control

7/12

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