cs4237b Cirrus Logic, Inc., cs4237b Datasheet - Page 46

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

res
The PI, CI, and TI bits are reset by writing a "0"
to the particular interrupt bit or by writing any
value to the Status register (R2).
Compatibility ID (I25)
Default = 00000011
CID4-CID0
All Chips:
V2-V0
Mono Input and Output Control (I26)
Default = 101x0000
MIA3-MIA0
46
MIM
D7
D7
V2
MOM
D6
D6
V1
MBY
D5
D5
V0
Reserved. Must write 0. Could read
as 0 or 1.
Chip Identification. Distinguishes
between this chip and previous
codec chips that support this register
set. This register is fixed to indicate
code compatibility with the CS4236.
X25 or C1 should be used to further
differentiate between parts that are
compatible with the CS4236.
00011 - CS4236, CS4237B
00010 - CS4232/CS4232A
00000 - CS4231/CS4231A
Version number. As enhancements
are made to the part, the version
number is changed so software can
distinguish between the different ver-
sions.
000 - Compatible with the CS4236
These bits are fixed for compatibility
with the CS4236. Register X25 or
C1 may be used to differentiate be-
tween the CS4236 and newer chips.
Mono Input Attenuation. When MIM
is 0, these bits set the level of MIN
CID4
D4
D4
res
CID3
MIA3
D3
D3
CID2
MIA2
D2
D2
CID1
MIA1
D1
D1
CID0
MIA0
D0
D0
res
MBY
MOM
MIM
summed into the mixer. MIA0 is the
least significant bit and represents
3 dB attenuation, with 0000 = 0 dB.
See Table 7.
Reserved. Must write 0. Could read
as 0 or 1.
Mono Bypass. MBY connects MIN
directly to MOUT with an attenuation
of 9 dB. When MBY = 1, MIM
should be set to 1.
0 - MIN not connected directly to
1 - MIN connected directly to MOUT.
Mono Output Mute. In MODE 3, MOM
will mute the left Line Out to the
mono mix output, MOUT. The right
Line Out mute, MOMR, is in X5. In
MODE 2, MOM mutes left and right
Line Out to MOUT. This mute is inde-
pendent of the line output mute.
0 - no mute
1 - mute
Mono Input Mute. In MODE 3, MIM
mutes the MIN analog input to the
left output mixer channel. MIMR in
X4 mutes MIN analog input to the
right output mixer channel. In
MODE 2, MIM mutes both left and
MOUT.
CS4237B
DS213PP4