CS4237B Datasheet, PDF (50/114 Pages) Cirrus Logic – CrystalClear Advanced Audio System with 3D Sound

DSP SERIAL PORT
DSP Audio Data Serial Port
SRC
Atten. X8L ^{Loopback Atten.}
X9R ^{I13L & (R)}
X10 Stereo Enable
Mute X8L _X10R
X9R ^{Loopback enable I13}
Mute I6L
I7R
Digital Mixer
DSP
NOTE: The symbol
shows the active bit(s) for the
register function specified
16-bit
A/D
Analog Input
Mixer
Gain I0L
I1R
Atten.
X4L
X5R
Mute
X11L
X11R
16 bit
D/A
Master Digital
Volume
Gain X14L
X15R
20dB X2L
Gain X3R
Mute X2L, X3R
Mute I2L, I3R
Mute I2L, I3R
Mute I4L, I5R
Mute I18L, I19R
*
Mute I18L, I19R
*
Mute X2L, X3R
Mute I2L, I3R
Mute I4L, I5R
Gain X2L
X3R
Gain I2L
I3R
Gain I4L
I5R
Gain I18L
* I19R
Output
Loopback
I0L, I1R
Atten. I6L
I7R
Mute X6L
* X7R
SRC
Atten. X6L
* X7R
FM Synthesizer enable
X4
Mute X16L
* X17R
Gain X16L
* X17R
Mute X14L
X15R
* I18/I19 can be remapped to control
X6/X7 and X16/X17. If remapping is
enabled, X0/X1 control LINE inputs
Wavetable Serial Port
C8
Analog
Output
Mixer
Mute I26L
X4R
Atten. I26
Mute I18L, I19R
*
Master
Volume
Mute
I26L
X5R
Mono Bypass
Atten.
-9db
Mute I26
WAVETABLE SERIAL PORT
MIN
UP/DOWN/MUTE
Figure 4. MODE 3 Mixer (assumes IFM or WTEN is set)
MIC
AUX1
(LINE IN)
AUX 2
(CDROM)
LINE
(Syn.)
LINE
OUT
MONO
OUT