TDA7464 STMicroelectronics, TDA7464 Datasheet - Page 8

• Manufacturer Part Number: TDA7464
• Description: IC PROCESSOR AUDIO DGTL 44-TQFP
• Manufacturer: STMicroelectronics
• Type: Audio Processorr

Specifications of TDA7464

• Applications: Automotive Systems
• Mounting Type: Surface Mount
• Package / Case: 44-TQFP, 44-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

TDA7464
SOFTWARE SPECIFICATION
Interface Protocol
The interface protocol comprises:
ACK = Achnowledge
S = Start
P = Stop
A = Address
B = Auto Increment
EXAMPLES
No Incremental Bus
The TDA7464 receives a start condition, the cor-
Incremental Bus
The TDA7464 receives a start condition, the cor-
rect chip address, a subaddress with the MSB = 1
(incremental bus): now it is in a loop condition
with an autoincrease of the subaddress whereas
8/21
A start condition (S)
A chip address byte, containing the TDA7464
S
S
S
MSB
MSB
MSB
1
1
1
0
0
0
D95AU226A
CHIP ADDRESS
CHIP ADDRESS
CHIP ADDRESS
D95AU306
D95AU307
0
0
0
0
0
0
0
0
0
0
0
0
A
A
A
LSB
LSB
LSB
0
0
0
ACK
ACK
ACK
MSB
MSB
MSB
B
0
1
X
X
SUBADDRESS
SUBADDRESS
SUBADDRESS
X
X
DATA
X
X
D3
D3
D2 D1 D0
D2 D1 D0
rect chip address, a subaddress with the MSB = 0
(no incremental bus), N-data (all these data con-
cern the subaddress selected), a stop condition.
SUBADDRESS from "1XXX1010" to "1XXX1111"
of DATA are ignored.
The DATA 1 concerns thesubaddress sent, and
the DATA 2 concerns the subaddress sent plus
one in the loop etc. and, at the end, it receives the
stop condition.
address
A subaddress bytes
A sequence of data (N byte + achnowledge)
A stop condition (P)
LSB
LSB
LSB
ACK
ACK
ACK
MSB
MSB
MSB
DATA 1 to DATA n
DATA 1 to DATA n
DATA
DATA
DATA
DATA
LSB
LSB
LSB
ACK
ACK
ACK
P
P
P