cs4239 Cirrus Logic, Inc., cs4239 Datasheet - Page 61

• Manufacturer Part Number: cs4239
• Description: Crystalclear? Ortable Isa Audio System Logic
• Manufacturer: Cirrus Logic, Inc.

Version / Chip ID (C1)
Default = 11011110
CID4-CID0
V2-V0
3D Space Control (C2)
Default = 0000xxxx
SPC3-SPC0
DS253PP2
SPC3
D7
D7
V2
SPC2
D6
V1
D6
D5
V0
SPC1
D5
Chip Identification. Distinguishes
between this chip and other codec
chips that support this register set.
This register is identical to the WSS
X25 register.
11110 - CS4239
Version number. As enhancements
are made, the version number is
changed so software can distinguish
between the different versions of the
same chip.
100 - Revision A
101 - Revision B
110 - Revision C
Control’s the "width" of the sound ex-
pansion with increasing numbers
giving decreasing space affects. The
least sigificant bit represents 1.5 dB
of attenuation, with 0000 = 0 dB (full
space affect).
Space control for 3D sound.
CID4
D4
SPC0
D4
CID3
D3
D3
rbc
CID2
D2
D2
rbc
CID1
D1
D1
rbc
CID0
D0
D0
rbc
3D Enable (C3)
Default = xxxexxxx
3DEN
Reserved (C4)
Default = xxxxxxxx
rbc
Reserved (C5)
Default = xxxxxxxx
rbc
Reserved (C6)
Default = xxxxxxxx
rbc
Reserved (C7)
Default = xxxxxxxx
res
D7
D7
D7
D7
D7
rbc
rbc
rbc
rbc
res
CrystalClear Portable ISA Audio System
D6
D6
D6
D6
D6
rbc
rbc
rbc
rbc
res
Enable 3D Sound. When set,
3D sound expansion is enabled on
the analog outputs with the amount
of 3D enhancement controlled
through C2.
Reserved, backwards compatible.
Reserved, backwards compatible.
Reserved, backwards compatible.
Reserved. Must write 0. Could read
as 0 or 1.
D5
D5
D5
D5
D5
rbc
rbc
rbc
rbc
res
3DEN
TM
D4
D4
D4
D4
D4
rbc
rbc
rbc
res
D3
D3
D3
D3
D3
res
res
rbc
rbc
res
D2
D2
D2
D2
D2
res
res
rbc
rbc
res
D1
D1
D1
D1
D1
res
res
rbc
rbc
res
CS4239
D0
D0
D0
D0
D0
res
res
rbc
rbc
res
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