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TDA7317 データシート(PDF) 7 Page - STMicroelectronics |
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TDA7317 データシート(HTML) 7 Page - STMicroelectronics |
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7 / 12 page ![]() SOFTWARE SPECIFICATION Interface Protocol The interface protocol comprises: A start condition (s) A chip address byte, containing the TDA7317 address (the 8th bit of the byte must be 0). The TDA7317 must always acknowledge at the end of each transmitted byte. A sequence of data (N-bytes + acknowledge) A stop condition (P) TDA7316 ADDRESS MSB first byte LSB MSB LSB MSB LSB S 1 00 0 0 1A 0 ACK DATA ACK DATA ACK P Data Transferred (N-bytes + Acknowledge) ACK = Acknowledge S = Start P = Stop MAX CLOCK SPEED 100kbits/s SOFTWARE SPECIFICATION Chip address (84 or 86 Hex) 1 MSB 00 00 1 A 0 LSB A = Logic level on pin ADDR A = 1 if ADDR pin = open A = 0 if ADDR pin = connected to ground SOFTWARE SPECIFICATION (continued) DATA BYTES (detailed description) Volume MSB LSB FUNCTION 0 X B2 B1 B0 A2 A1 A0 Volume 0.375dB steps 0 0 0 0 1 1 1 1 0 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 0 -0.375 -0.75 -1.125 -1.5 -1.875 -2.25 -2.625 0 X B2 B1 B0 A2 A1 A0 Volume -3dB steps 0 0 0 0 1 1 0 0 1 1 0 0 0 1 0 1 0 1 0 -3 -6 -9 -12 -15 TDA7317 7/12 |
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