CS4239-JQ CIRRUS [Cirrus Logic], CS4239-JQ Datasheet - Page 51

• Manufacturer Part Number: CS4239-JQ
• Manufacturer: CIRRUS [Cirrus Logic]

PAE
FM Volume Scaling (X19)
Default = xeeexxxx
FMS2-FMS0
Reserved (X20)
Default = xxxxxxxx
res
Reserved (X21)
Default = xxxxxxxx
res
Reserved (X22)
Default = xxxxxxxx
res
DS253PP2
D7
res
D7
D7
D7
res
res
res
FMS2
D6
D6
D6
D6
res
res
res
FMS1 FMS0
D5
D5
D5
D5
res
res
res
ity when AUX1 analog inputs are
substituted for LINE analog inputs
which are no longer available.
Processor Access Enable. When set,
I20/21 provide access to the Proces-
sor identically to CTRLbase+5/+6
respectively.
FM Volume Scaling relative to wave-
table digital input. These bits are
provided for backwards compatibility
with previous chips. These bits are
initialized through Hardware Configu-
ration data.
010 - 0 dB
011 - +6 dB
100 - -12 dB
101 - -6 dB
110 - +12 dB
111 - +18 dB
Reserved. Could read as 0 or 1.
Reserved. Could read as 0 or 1.
Reserved. Could read as 0 or 1.
D4
D4
D4
D4
res
res
res
D3
res
D3
D3
D3
res
res
res
D2
res
D2
D2
D2
res
res
res
D1
res
D1
D1
D1
res
res
res
D0
D0
D0
D0
res
res
res
res
3D Space Control (X23)
Default = 0000xxxx
This register and C2 access the same data.
SPC3-SPC0
CS9236 Wavetable Control (X24)
Default = 0exxee00
This register and C8 access the same data.
BRES
DMCLK
VCEN
WTEN
VCIE
SPC3
D7
D7
VCF1
D6
SPC2
CrystalClear Portable ISA Audio System
D6
D5
res
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).
BRESET pin is forced low. Typically
used for power management of pe-
ripheral devices.
Disable MCLK. When set, the MCLK
pin of the CS9236 Wavetable Syn-
thesizer serial interface is forced low
providing a power savings mode.
the UP, DOWN, and MUTE pins be-
come active and provide hardware
master volume control for the line
outputs. Note that this bit can be in-
itialized at power-up through
Hardware Configuration data, Misc.
Configuration Byte.
Wavetable Serial Port Enable. When,
set, the CS9236 Single-Chip Wave-
table Music Synthesizer serial port
pins are enabled. WTEN can be in-
itialized in the E
Configuration data, Global Configura-
tion byte.
Space control for 3D sound.
Force BRESET low. When set, the
Volume Control Enable. When set,
SPC1
D5
D4
res
TM
SPC0
D4
WTEN
D3
2
PROM Hardware
D3
res
VCEN DMCLK BRES
D2
D2 D1
res
D1
CS4239
res
D0
D0
res
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