E-TDA7348D View Datasheet(PDF) - STMicroelectronics
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Description
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E-TDA7348D Datasheet PDF : 20 Pages
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Software specification
4
Software specification
TDA7348
4.1
Interface protocol
The interface protocol comprises:
● A start condition (s)
● A chip address byte, (the LSB bit determines read/write transmission)
● A subaddress byte.
● A sequence of data (N-bytes + acknowledge)
● A stop condition (P)
Chip address
Subaddress
Data 1 to data n
MSB
LSB
MSB
LSB
MSB
S 1 0 0 0 1 0 0 R/W ACK X X X I A3 A2 A1 A0 ACK
ACK = Acknowledge
S = Start
P = Stop
I = Auto Increment
X = Not used
Max clock speed 500kbits/s
DATA
LSB
ACK P
4.2
Auto increment
If bit I in the subaddress byte is set to "1", the auto-increment of the subaddress is enabled
Table 5. Subaddress (receive mode)
MSB
X
X
X
I
A3
A2
0
0
0
0
0
0
0
0
0
1
0
1
0
1
0
1
1
0
LSB
Function
A1
A0
0
0 Input selector
0
1 Loudness
1
0 Volume
1
1 Bass, Treble
0
0 Speaker attenuator LF
0
1 Speaker attenuator LR
1
0 Speaker attenuator RF
1
1 Speaker attenuator RR
0
0 Mute
12/20
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