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PCM1870 Datasheet(PDF) 30 Page - Burr-Brown (TI)

[Old version datasheet] Texas Instruments acquired Burr-Brown Corporation. Click here to check the latest version.
Part # PCM1870
Description  16-Bit Low-Power Stereo Audio ADC With Microphone Bias and Microphone Amplifier
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Manufacturer  BURR-BROWN [Burr-Brown (TI)]
Direct Link  http://www.burr-brown.com
Logo BURR-BROWN - Burr-Brown (TI)

PCM1870 Datasheet(HTML) 30 Page - Burr-Brown (TI)

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PCM1870
SLAS544 – MAY 2007
Register 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
RSV
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, PCM1870
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 data bit length for the ADC output.
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 resets to 0 automatically.
SRST = 0
Reset disabled (default)
SRST = 1
Reset enabled
NPR[5:0]: System Clock Rate Selection
Default value: 00 0000
These bits are used to select the system clock rate. See Table 8 for details.
MBST: BCK Output Configuration in Master Mode
Default value: 0
This bit is used to control the BCK output configuration in master mode. VIO (I/O cell power supply) power
consumption can be reduced by adjusting BCK edge to bit number when setting MBST = 1. This is effective in
master mode (register 69 MSTR = 1).
MBST = 0
Normal Output (default)
MBST = 1
Burst output
30
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