cs4237b Cirrus Logic, Inc., cs4237b Datasheet - Page 62

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

E
CTRLbase+1, Default = 10000000
CLK
DOUT
DIN/EEN
IMH*
62
ADC1,0
2
ICH
D7
PROM Interface
D6
ISH
ADC1
D5
This bit is used to generate the clock
for the Plug and Play E
EEN must be set to 1 to make this
bit operational.
This bit is used to output serial data
to the Plug and Play E
must be set to 1 to make this bit op-
erational.
When read (DIN), this bit reflects
the XD0 pin, which should be serial
data output from the Plug and Play
E
1 for this bit to function.
When written (EEN), enables the
E
onto the peripheral port pins. Writing:
0 - E
1 - E
Interrupt polarity - Modem. When set,
the MINT pin is an active high sig-
nal. When low, MINT is an active
low signal.
These two bits are used to control
an additional A/D mux and enable
for an analog loopback path. These
two mixing paths provide Karaoke
support. These bits are provided for
backwards compatibility. New soft-
ware should use the MIC volume
control in MODE 3 registers X2/X3
to support MIC mix to the output
mixer. See Figure 6.
00 - Normal. A/D input from the input
01 - Codec Input mux is mixed into
2
2
PROM. EEN and DOUT must be
PROM interface: CLK and DOUT
mux.
output mixer. A/D input is from
the input mux. This facilitates the
Mic mixed to output, but only Mic
recorded.
ADC0
2
2
D4
PROM interface disabled
PROM interface enabled
IMH
D3
EEN
DIN/
D2
2
2
PROM. EEN
PROM.
DOUT
D1
CLK
D0
ISH*
ICH*
* Note: These bits can be initialized through the
Figure 6. MODE 2 Mixer Addition
10 - Codec Input mux is mixed into
11 - reserved.
Interrupt polarity - External Synthe-
sizer. When set, the SINT pin is an
active high signal. When low, SINT
is an active low signal.
Interrupt polarity - CDROM. When set,
the CDINT pin is an active high sig-
nal. When low, CDINT is an active
low signal.
Hardware Configuration data.
output mixer. A/D input is from
line outputs. This facilitates the Mic
mixed to output, and the output
recorded by the ADCs.
CS4237B
DS213PP4