Burr Brown PCM1738 - 24-Bit, 192kHz Sampling.pdf - MaxDat

REGISTER 19 (Cont.)FLTDigital Filter Roll-Off ControlThis bit is Read/Write.Default Value: 0FLT = 0FLT = 1Sharp Roll-Off (default)Slow Roll-OffThe FLT bit allows the user to select the digital filter roll-off characteristics. The filter responses for theseselections are shown in the Typical Performance Curves section of this data sheet.INZDInfinite Zero Detect Mute ControlThis bit is Read/Write.Default Value: 0INZD = 0INZD = 1Infinite Zero Detect Mute Disabled (default)Infinite Zero Detect Mute EnabledThe INZD bit is used to enable or disable the Zero Detect Mute function. Setting INZD = 1 allows the analogoutputs to be set to the bipolar zero level when the PCM1738 detects zero data for both Left and Right channelsfor 1024 sampling periods (or LRCK cycles).B15 B14 B13 B12 B11 B10 B9 B8 B7 B6 B5 B4 B3 B2 B1 B0REGISTER 20 W/R 0 0 1 0 1 0 0 DSOS SRST MRST DFTH MONO CHSL OS1 OS0W/RDSOSRead/Write Mode ControlWhen W/R = 0, a Write operation is performed.When W/R = 1, a Read operation is performed.Default Value: 0Delta-Sigma Order SelectionThis bit is Read/Write.Default Value: 0DSOS = 0DSOS = 1Third-Order Modulation (default)Fifth-Order ModulationThe DSOS bit is used to change the order of delta-sigma modulation. It is possible to modify out-of-bandnoise characteristics when combined with the oversampling controls (OS0 and OS1).SRSTSystem Reset ControlThis bit is Read/Write.Default Value: 0SRST = 0SRST = 1Normal Operation (default)System Reset OperationThe SRST bit is used to reset the PCM1738 to the initial system condition.MRSTMode-Register Reset ControlThis bit is Read/Write.Default Value: 0MRST = 0MRST = 1Normal Operation (default)Mode-Register Reset OperationThe MRST bit is used to set the mode registers to their default conditions.20PCM1738SBAS174A