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TDA7309D Datasheet(PDF) 8 Page - STMicroelectronics

Part # TDA7309D
Description  DIGITAL CONTROLLED STEREO AUDIO PROCESSOR WITH LOUDNESS
PDF  14 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

TDA7309D Datasheet(HTML) 8 Page - STMicroelectronics

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4
SOFTWARE SPECIFICATION
4.1 Interface Protocol
The interface protocol comprises:
■ A start condition (s)
■ A chip address byte, containing the TDA7309 address (the 8th bit of the byte must be 0).
The TDA7309 must always acknowledge at the end of each transmitted byte.
■ A sequence of data (N-bytes + acknowledge)
■ A stop condition (P)
Figure 19.
ACK = Acknowledge
S = Start
P = Stop
MAX CLOCK SPEED 400kbits/s
Table 7. Chip address
Table 8. Function Codes
Table 9. Channel Abilitation Codec
MSB
LSB
001
1001
0
pin address open
001
1000
0
pin address close to ground
MSB
F6F5
F4
F3F2
F1
LSB
VOLUME
0
XXX
XXX
X
MUTE/LOUD
1
0
0
X
X
X
X
X
INPUTS
1
0
1
X
X
X
X
X
CHANNEL
1
1
0
X
X
X
X
X
MSB
F6
F5
F4
F3
F2
F1
LSB
FUNCTION
1
1
0
channel
XX
X0
0
RIGHT
XX
X0
1
LEFT
XX
X1
0
BOTH
XX
X1
1
BOTH



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