TDA7467D 查看數據表（PDF） - STMicroelectronics
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TDA7467D Datasheet PDF : 11 Pages
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TDA7467
SOFTWARE SPECIFICATION
Interface Protocol
The interface protocol comprises:
s A start condition (S)
s A chip address byte
s A subaddress bytes
s A sequence of data (N byte + acknowledge)
s A stop condition (P)
CHIP ADDRESS
SUBADDRESS
DATA 1 to DATA n
MSB
LSB
MSB
S 1 0 0 0 0 0 A 0 ACK B
D96AU420mod
DATA
LSB
MSB
ACK
DATA
LSB
ACK P
ACK = Acknowledge
S = Start; P = Stop
) A = Address
t(s B = Auto Increment
duc EXAMPLES
ro No Incremental Bus
P The TDA7467 receives a start condition, the correct chip address, a subaddress with the MSB = 0 (no
te incremental bus), N-data (all these data concern the subaddress selected), a stop condition.
ole CHIP ADDRESS
SUBADDRESS
bs MSB
LSB
MSB
LSB
MSB
O S 1 0 0 0 0 0 A 0 ACK 0 X X X X X D1 D0 ACK
) - D96AU421mod
DATA
DATA
LSB
ACK P
ct(s Incremental Bus
du The TDA7467 receive a start conditions, the correct chip address, a subaddress with the MSB = 1 (incre-
ro mental bus): now it is in a loop condition with an autoincrease of the subaddress whereas SUBADDRESS
from "1XXXX1XX" to "1XXX111" of DATA are ignored.
te P The DATA 1 concern the subaddress sent, and the DATA 2 concerns the subaddress sent plus one sent
in the loop etc, and at the end it receivers the stop condition.
oleCHIP ADDRESS
SUBADDRESS
DATA 1 to DATA n
ObsMSB
LSB
MSB
LSB
MSB
LSB
S 1 0 0 0 0 0 A 0 ACK 1 X X X X X D1 D0 ACK
DATA
ACK P
D96AU422mod
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