cs4237b Cirrus Logic, Inc., cs4237b Datasheet - Page 66

• Manufacturer Part Number: cs4237b
• Description: Crystalclear Advanced Audio System With 3d Sound
• Manufacturer: Cirrus Logic, Inc.

3D Space and Center (C2)
Default = 00000000
CTR3-CTR0
SPC3-SPC0
3D Enable (C3)
Default = 000xxxxx
res
3DSO
66
3DEN
SPC3
12
13
14
15
D7
0
1
2
3
8
D7
.
.
bit3
3DM
0
0
0
0
1
1
1
1
1
D6
.
.
SPC2
D6
3DSO
bit2
SPC1 SPC0
D5
SRS processed "Center" gain term.
The least significant bit represents
1.5 dB attenuation, with 0000=0 dB.
See Table 24. When 3DM is on, this
value is forced to 0000.
The least significant bit represents
1.5 dB attenuation, with 0000=0 dB.
See Table 24. When 3DM is on, this
value is forced to 0010.
Reserved. Must write 0. Could read
as 0 or 1.
3D Serial Output. When set, SDOUT
data comes from the DAC inputs
which includes 3D effects. Typically
used when CSPE in C4 is set and
determines the data used on the
Consumer Serial Port output pin.
0 - The output is from the ADCs.
1 - The output is from the SRS DSP.
SRS processed "Space" gain term.
D5
0
0
0
0
0
1
1
1
1
.
.
D4
D4
res
bit1
0
0
1
1
0
0
0
1
1
.
.
CTR3
D3
D3
res
bit0
0
1
0
1
0
0
1
0
1
.
.
CTR2
D2
D2
res
Table 24. SRS 3D Sound Control
CTR1
D1
D1
res
Space (SPC3-SPC0)
CTR0
D0
D0
res
-12.0 dB
-18.0 dB
-19.5 dB
-21.0 dB
-22.5 dB
-4.5 dB
-1.5 dB
-3.0 dB
0.0 dB
-
-
3DM
3DEN
Consumer Serial Port Enable (C4)
Default = 0000xxxx
V
U
CSBR
CSPE
CSPE
D7
CSBR
D6
3D Mono Enable. When set, the SRS
Mono-to-Stereo DSP is enabled.
(3DEN must also be enabled). This
allows a mono signal to be SRS
processed into a pseudo stereo im-
age.
SRS 3D Sound DSP.
The Validity bit in a sub-frame of
digital audio data.
The User bit in a sub-frame of digital
audio data.
Channel Status Block Reset. When
set, resets the channel status block
boundary.
set, the serial port output format, on
SDOUT, converts to the consumer
standard for digital audio transmis-
sion, compatible with the consumer
portion of IEC-958. An older version
of the standard is also called
S/PDIF. Note that the serial port is
still enabled using the SPE bit in
WSS I16. For more information on
the consumer digital audio transmis-
sion format see Crystal’s Application
Note 22 titled Overview of Digital
Audio Interface Data Structures .
3D Enable. Must be set to enable the
Consumer Serial Port Enable. When
D5
U
D4
V
Center (CTR3-CTR0)
D3
res
-12.0 dB
-18.0 dB
-19.5 dB
-21.0 dB
-22.5 dB
-1.5 dB
-3.0 dB
-4.5 dB
0.0 dB
-
-
D2
res
CS4237B
D1
res
DS213PP4
D0
res