Datasheet

PCM1753
PCM1754
PCM1755
SLES092C – OCTOBER 2003 – REVISED FEBRUARY 2009
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22
DMF[1:0]: Sampling Frequency Selection for the De-Emphasis Function
Default value: 00
The DMF[1:0] bits are used to select the sampling frequency used for the digital de-emphasis function when
it is enabled.
DMF[1:0]
De-Emphasis Sample Rate Selection
00 44.1 kHz (default)
01 48 kHz
10 32 kHz
11 Reserved
B15 B14 B13 B12 B11 B10 B9 B8 B7 B6 B5 B4 B3 B2 B1 B0
Register 20
0 IDX6 IDX5 IDX4 IDX3 IDX2 IDX1 IDX0 RSV RSV FLT RSV RSV FMT2 FMT1 FMT0
FMT[2:0]: Audio Interface Data Format
Default value: 101
The FMT[2:0] bits are used to select the data format for the serial audio interface. The following table shows
the available format options.
FMT[2:0]
Audio Data Format Selection
000 24-bit standard format, right-justified data
001 20-bit standard format, right-justified data
010 18-bit standard format, right-justified data
011 16-bit standard format, right-justified data
100 16- to 24-bit I
2
S format
101 16- to 24-bit left-justified format (default)
110 Reserved
111 Reserved
FLT: Digital Filter Rolloff Control
Default value: 0
FLT = 0
Sharp rolloff (default)
FLT = 1 Slow rolloff
The FLT bit allows the user to select the digital filter rolloff that is best suited to the application. Two filter rolloff
selections are available, sharp and slow. The filter responses for these selections are shown in the Typical
Performance Curves section of this data sheet.
B15 B14 B13 B12 B11 B10 B9 B8 B7 B6 B5 B4 B3 B2 B1 B0
Register 22
0 IDX6 IDX5 IDX4 IDX3 IDX2 IDX1 IDX0 RSV RSV RSV RSV RSV AZRO ZREV DREV
DREV: Output Phase Select
Default value: 0
DREV = 0
Normal output (default)
DREV = 1 Inverted output
The DREV bit is the output analog signal phase control.