CS4239 Datasheet, PDF (47/98 Pages) Cirrus Logic – CrystalClear™ Portable ISA Audio System

Wavetable Enable
C8
CS9236 or CS4610 SERIAL PORT
DSP Port Enable
I16
Mute X2L, X3R
20dB Gain
X2
Gain
X2
Analog Input
Mixer
Atten.
ADC1
Σ X4L
X5R
* Mute I2L, I3R
Mute I4L, I5R
* Gain I2L
I3R
Gain I4L
I5R
DSPD1 Enable
X18
Loop Enable
X18
Mute I18L
I19R
Mute
X11L
X11R
Mute X2L, X3R
* Mute I2L, I3R
Loopback
Enable
I0L, I1R
MIC
AUX1
(LINE IN)
AUX 2
(CDROM)
Mute X16L Mute X8L
X17R
X9R
Atten. I6L
I7R
Gain I18L
I19R
DAC1
DAC2
Mute I6L
I7R
Mute I18L
I19R
Mute I4L, I5R
Atten.
Σ X27L
X29R
Gain I27L Mute I27L
I29R
I29R
LINE
OUT
ZVPort Enable
X18
Σ
Mute X6L
X7R
FM Syn. Enable
X4
Analog Output
Mixer
Mute I26L
X4R
Atten. I26
* I2/I3 can be
remapped to be
controlled through
I18/I19.
ZVPORT
Figure 4. Mixer Block Diagram
MIN UP/DOWN/MUTE