Datasheet

PCM1741
14
SBAS175
Register 20 (Cont.)
FLT Digital Filter Roll-Off Control
Default Value: 0
FLT = 0 Sharp Roll-Off (default)
FLT = 1 Slow Roll-Off
The FLT bit allows the user to select the digital filter roll-off that is best suited to their application. Two
filter roll-off sections are available: Sharp or 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 used to set the output phase of V
OUT
L and V
OUT
R.
ZREV Zero Flag Polarity Select
Default Value: 0
ZREV = 0 Zero Flag Pins HIGH at a Zero Detect (default)
ZREV = 1 Zero Flag Pins LOW at a Zero Detect
The ZREV bit allows the user to select the active polarity of Zero Flag pins.
AZRO Zero Flag Function Select
Default Value: 0
AZRO = 0 L-/R-Channel Independent Zero Flag (default)
AZRO = 1 L-/R-Channel Common Zero Flag
Register22 (Cont.)
The AZRO bit allows the user to select the function of Zero Flag pins.
AZRO = 0:
Pin11: ZEROR; Zero Flag Output for R-Channel
Pin12: ZEROL; Zero Flag Output for L-Channel
AZRO = 1:
Pin11: ZEROA; Zero Flag Output for L-/R-Channel
Pin12: NA; No Assign