PCM1738E2K BURR-BROWN [Burr-Brown Corporation], PCM1738E2K Datasheet - Page 20

• Manufacturer Part Number: PCM1738E2K
• Description: 24-Bit, 192kHz Sampling, Advanced Segment, Audio-Stereo DIGITAL-TO-ANALOG CONVERTER
• Manufacturer: BURR-BROWN [Burr-Brown Corporation]

20
REGISTER 19
FLT
INZD
REGISTER 20
W/R
DSOS
SRST
MRST
Digital Filter Roll-Off Control
This bit is Read/Write.
Default Value: 0
The FLT bit allows the user to select the digital filter roll-off characteristics. The filter responses for these
selections are shown in the Typical Performance Curves section of this data sheet.
This bit is Read/Write.
Default Value: 0
Read/Write Mode Control
When W/R = 0, a Write operation is performed.
When W/R = 1, a Read operation is performed.
Default Value: 0
Delta-Sigma Order Selection
This bit is Read/Write.
Default Value: 0
The DSOS bit is used to change the order of delta-sigma modulation. It is possible to modify out-of-band
noise characteristics when combined with the oversampling controls (OS0 and OS1).
Infinite Zero Detect Mute Control
The INZD bit is used to enable or disable the Zero Detect Mute function. Setting INZD = 1 allows the analog
outputs to be set to the bipolar zero level when the PCM1738 detects zero data for both Left and Right channels
for 1024 sampling periods (or LRCK cycles).
System Reset Control
This bit is Read/Write.
Default Value: 0
The SRST bit is used to reset the PCM1738 to the initial system condition.
Mode-Register Reset Control
This bit is Read/Write.
Default Value: 0
The MRST bit is used to set the mode registers to their default conditions.
B15
W/R
FLT = 0
FLT = 1
INZD = 0
INZD = 1
DSOS = 0
DSOS = 1
SRST = 0
SRST = 1
MRST = 0
MRST = 1
(Cont.)
B14
0
B13
0
Infinite Zero Detect Mute Disabled (default)
Infinite Zero Detect Mute Enabled
Normal Operation (default)
Mode-Register Reset Operation
Sharp Roll-Off (default)
Slow Roll-Off
Third-Order Modulation (default)
Fifth-Order Modulation
Normal Operation (default)
System Reset Operation
B12
1
B11
0
B10
1
B9
0
B8
0
DSOS
B7
SRST
B6
MRST
B5
DFTH
B4
MONO
B3
CHSL
B2
PCM1738
OS1
SBAS174B
B1
OS0
B0