TDA7346D ST Microelectronics, TDA7346D Datasheet - Page 7

• Manufacturer Part Number: TDA7346D
• Description: DIGITAL CONTROLLED SURROUND SOUND MATRIX
• Manufacturer: ST Microelectronics

SOFTWARE SPECIFICATION
Interface Protocol
The interface protocol comprises:
MAX CLOCK SPEED 100kbits/s
SOFTWARE SPECIFICATION
Chip address
A = Logic level on pin ADDR
A = 1 if ADDR pin = open
A = 0 if ADDR pin = connected to ground
Software Specification
ACK = Acknowledge
S = Start
P = Stop
S
MSB
MSB
1
A start condition (s)
A chip address byte, containing the TDA7346
MSB
0
0
1
1
1
1
1
1
1
1
1
1
1
1
TDA7346 ADDRESS
1
0
first byte
M1
M1
M1
M1
M1
M1
0
1
0
0
1
1
0
1
1
1
M0
M0
M0
M0
M0
M0
A5
A5
1
0
1
0
1
A
1
LSB
0
A4
A4
1
1
0
0
0
0
ACK
1
MSB
A
A3
A3
B3
1
0
0
1
1
LSB
0
DATA
Data Transferred (N-bytes + Acknowledge)
A2
A2
B2
1
0
1
0
1
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)
A
0
1
C1
C1
D1
A1
A1
B1
E1
1
LSB
ACK
LSB
A0
A0
B0
C0
C0
D0
E0
MSB
1
INPUT ATTENUATION R
INPUT ATTENUATION L
SURROUND MODES
SIMULATED MODE
MUSIC MODE
MOVIE MODE
OFF MODE
EFFECT CONTROL
PHASE SHIFTER 4 CONTROL
PHASE SHIFTER 3 CONTROL
PHASE SHIFTER 2 CONTROL
PHASE SHIFTER 1 CONTROL
CHIP ADDRESS
DATA
DC (HEX)
DE (HEX)
SUBADDRESS
TDA7346
LSB
ACK
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P