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TDA7467 데이터시트(PDF) 6 Page - STMicroelectronics |
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TDA7467 데이터시트(HTML) 6 Page - STMicroelectronics |
6 / 11 page SOFTWARE SPECIFICATION Interface Protocol The interface protocol comprises: A start condition (S) A chip address byte A subaddress bytes A sequence of data (N byte + achnowledge) A stop condition (P) CHIP ADDRESS SUBADDRESS DATA 1 to DATA n MSB LSB MSB LSB MSB LSB S 100000 A 0 ACK B DATA ACK DATA ACK P ACK = Achnowledge S = Start P = Stop B = Auto Increment EXAMPLES No Incremental Bus The TDA7467 receives a start condition, the correct chip address, a subaddress with the MSB = 0 (no in- cremental bus), N-data (all these data concern the subaddress selected), a stop condition. Incremental Bus The TDA7467 receives a start condition, the correct chip address, a subaddress with the MSB = 1 (incre- mental bus): now it is in a loop condition with an autoincrease of the subaddress whereas SUBAD- DRESS from ”1XXXX1XX” to ”1XXX1111” of DATA are ignored. The DATA 1 concerns the subaddress sent, and the DATA 2 concerns the subaddress plus one sent in the loop etc. and at the end, it receives the stop condition. CHIP ADDRESS SUBADDRESS DATA MSB LSB MSB LSB MSB LSB S 1 0 0 0 0 0 A 0 ACK 0 X X X X X D1 D0 ACK DATA ACK P CHIP ADDRESS SUBADDRESS DATA 1 to DATA n MSB 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 TDA7467 6/11 |
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