Datasheet

PCM1789
SBAS451A – OCTOBER 2008 – REVISED JANUARY 2009 .............................................................................................................................................. www.ti.com
DEC HEX B7 B6 B5 B4 B3 B2 B1 B0
22 16 DAMS RSV DEMP1 DEMP0 MZSEL RSV AZRO ZREV
DAMS Digital attenuation mode
This bit selects the attenuation mode.
Default value: 0.
DAMS Digital attenuation mode
0 Fine step: 0.5-dB step for 0 dB to – 63 dB range (default)
1 Wide range: 1-dB step for 0 dB to – 100 dB range
RSV Reserved
Reserved; do not use.
DEMP[1:0] Digital de-emphasis function/sampling rate control
These bits are used to disable and enable the various sampling frequencies of the digital
de-emphasis function.
Default value: 00.
DEMP Digital de-emphasis function/sampling rate control
00 Disable (default)
01 48 kHz enable
10 44.1 kHz enable
11 32 kHz enable
MZSEL AMUTEO/ZERO flag selection
This bit is used to select the function of the ZERO2 pin.
Default value: 0.
MZSEL AMUTEO/ZERO flag selection
0 The ZERO2 pin functions as ZERO2 (default).
1 The ZERO2 pin functions as AMUTEO.
AZRO Zero flag channel combination selection
This bit is used to select the zero flag channel combination for ZERO1 and ZERO2.
Default value: 0.
AZRO Zero flag combination selection
0 Combination A: ZERO1 = left channel, ZERO2 = right channel (default)
1 Combination B: ZERO1 = left channel or right channel, ZERO2 = left channel and
right channel
ZREV Zero flag polarity selection
This bit controls the polarity of the zero flag pin.
Default value: 0.
ZREV Zero flag polarity selection
0 High for zero detect (default)
1 Low for zero detect
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