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PCM1774 датащи(PDF) 29 Page - Texas Instruments |
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PCM1774 датащи(HTML) 29 Page - Texas Instruments |
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29 / 49 page ![]() www.ti.com PCM1774 SLAS551 – JULY 2007 Register 82 B15 B14 B13 B12 B11 B10 B9 B8 B7 B6 B5 B4 B3 B2 B1 B0 Register 82 0 IDX6 IDX5 IDX4 IDX3 IDX2 IDX1 IDX0 RSV RSV PAIR PAIL RSV RSV RSV RSV IDX[6:0]: 101 0010b (52h): Register 82 PAIR: Power Up/Down for PG2 and PG6 (Gain Amplifier for R-Channel Analog Input) PAIL: Power Up/Down for PG1 and PG5 (Gain Amplifier for L-Channel Analog Input) Default value: 0 These bits are used to control power up/down for PG2 and PG6 (gain amplifier for analog input). PAIR, PAIL = 0 Power down (default) PAIR, PAIL = 1 Power up Registers 84–86 B15 B14 B13 B12 B11 B10 B9 B8 B7 B6 B5 B4 B3 B2 B1 B0 Register 84 0 IDX6 IDX5 IDX4 IDX3 IDX2 IDX1 IDX0 RSV RSV RSV RSV RSV MSTR RSV BIT0 Register 85 0 IDX6 IDX5 IDX4 IDX3 IDX2 IDX1 IDX0 SRST LRPC NPR5 NPR4 NPR3 NPR2 NPR1 NPR0 Register 86 0 IDX6 IDX5 IDX4 IDX3 IDX2 IDX1 IDX0 MBST MSR2 MSR1 MSR0 RSV RSV RSV ZCRS IDX[6:0]: 101 0100b (54h): Register 84 IDX[6:0]: 101 0101b (55h): Register 85 IDX[6:0]: 101 0110b (56h): Register 86 MSTR: Master or Slave Selection for Audio Interface Default value: 0 This bit is used to select either master or slave mode for the audio interface. In master mode, the PCM1774 generates LRCK and BCK from the system clock. In slave mode, it receives LRCK and BCK from another device. MSTR = 0 Slave interface (default) MSTR = 1 Master interface BIT0: Bit Length Selection for Audio Interface Default value: 1 This bit is used to select the data bit length for DAC input. BIT0 = 0 Reserved BIT0 = 1 16 bits (default) SRST: System Reset Default value: 0 This bit is used to enable system reset. All circuits are reset by setting SRST = 1. After completing the reset sequence, SRST is set to 0 automatically. SRST = 0 Reset disabled (default) SRST = 1 Reset enabled 29 Submit Documentation Feedback |
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