CS4237B Datasheet, PDF (56/114 Pages) Cirrus Logic – CrystalClear Advanced Audio System with 3D Sound

CS4237B
Left Wavetable Serial Port Volume (X16)
Default = 00000000
D7 D6 D5 D4 D3 D2 D1 D0
LWM res LWG5 LWG4 LWG3 LWG2 LWG1 LWG0
This Wavetable volume register can also be control-
led through I18 when WTEN=1 (C8 or Global Config.
byte) & WTRMD=0 (X4).
LWG5-LWG0
Left Wavetable Serial Port Gain.
Least significant bit represents
1.5 dB, with 01000 = 0 dB.
See Table 6.
res
Reserved. Must write 0. Could read
as 0 or 1.
LWM
Left Wavetable Serial Port Mute.
When set, the Left Wavetable Serial
Input to the digital mixer is muted.
Right Wavetable Serial Port Volume (X17)
Default = 00000000
D7 D6 D5 D4 D3 D2 D1 D0
RWM res RWG5 RWG4 RWG3 RWG2 RWG1 RWG0
This Wavetable volume register can also be control-
led through I19 when WTEN=1 (C8 or Global Config.
byte) & WTRMD=0 (X4).
RWG5-RWG0
Right Wavetable Serial Port Gain.
Least significant bit represents
1.5 dB, with 01000 = 0 dB.
See Table 6.
res
Reserved. Must write 0. Could read
as 0 or 1.
RWM
Right Wavetable Serial Port Mute.
When set, the Right Wavetable Se-
rial Input to the digital mixer is
muted.
Chip Version and ID (X25)
Default = 11001000
D7 D6 D5 D4 D3 D2 D1 D0
V2 V1 V0 CID4 CID3 CID2 CID1 CID0
This register was added to Revision C silicon. In revi-
sion B, this register read 0x00.
CID5-CID0
Chip Identification. Distinguishes
between this chip and other codec
chips that support this register set.
This register is identical to C1 and
replaces the ID register in I25.
00000 - CS4237B, Revision B
01000 - CS4237B
V2-V0
Version Number. As enhancements
are made, the version number is
changed so software can distinguish
between the different versions of the
same chip.
000 - Revision B
110 - Revision C/D
111 - Revision E
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