cs4237b Cirrus Logic, Inc., cs4237b Datasheet - Page 54

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

LSPM
Serial
Right DSP Serial Port Volume (X9)
Default = 0x000000
RSPA4-RSPA0 Right DSP Serial Port Attenuation.
res
RSPM
Serial
Right Loopback Monitor Volume (X10)
Default = 0x111111
RLBA5-RLBA0 Right Channel Loopback Attenuation.
res
54
SLBE
RSPM
Port
Port
D7
D7
D6
res
D6
res RSPA5 RSPA4 RSPA3 RSPA2 RSPA1 RSPA0
0 to -94.5 dB
0 to -94.5 dB
LSPA5-A0
RSPA5-A0
RLBA5 RLBA4 RLBA3 RLBA2 RLBA1 RLBA0
D5
D5
Left DSP Serial Port Mute. When set
to 1, the Left DSP Serial Port input
(SDIN) to the digital mixer is muted.
The least significant bit represents
1.5 dB, with 000000 = 0 dB.
See Table 6.
Reserved. Must write 0. Could read
as 0 or 1.
Right DSP Serial Port Mute. When
set to 1, the Right DSP Serial Port
input (SDIN) to the digital mixer is
muted.
These bits determine the attenuation
of the loopback from the right ADC
to the right digital mixer. LBE in I13
must be set to enable loopback. The
least significant bit represents -1.5
dB, with 000000 = 0 dB. See Table 6.
Reserved. Must write 0. Could read
as 0 or 1.
D4
D4
D3
D3
RSPM
LSPM
D2
D2
To Digital Mixer
Summer
To Digital Mixer
Summer
D1
D1
D0
D0
SLBE
DAC Mute and IFSE Enable (X11)
Default = 110xxxxx
res
IFSE
RDMIM
LDMIM
Independent ADC Fs (X12)
Default = xxxxxxxx
SRAD7-SRAD0 Sample Rate frequency select for
SRAD7 SRAD6 SRAD5 SRAD4 SRAD3 SRAD2 SRAD1 SRAD0
LDMIM
D7
D7
RDMIM
D6
D6
1, control over the Left and Right
loopback volume is separated.
RLBA5-RLBA0 (X10) control the
Right channel, and LBA5-LBA0 (I13)
control the Left channel.
When set to 0, LBA5-LBA0 (I13) con-
trol both channels.
Reserved. Must write 0. Could read
as 0 or 1.
When set to 1, the extended
registers X12 and X13 are used to
set the sample rate, and registers I8,
I10 (OSM1,0), and I22 are ignored.
X12 and X13 cannot be modified un-
less this bit is set to 1.
Right Digital Master Input Mixer Mute.
When set to 1, the output from the
Right DAC is Muted to the Right in-
put mixer. See Figure 4.
Left Digital Master Input Mixer Mute.
When set to 1, the output from the
Left DAC is Muted to the Left input
mixer. See Figure 4.
the A/D converter. This register is
only in effect (and can only be writ-
ten) while IFSE=1 in X11.
See Table 14.
Stereo LoopBack Enable. When set to
Independent Sample Freq. Enable.
D5
IFSE
D5
D4
D4
res
D3
D3
res
D2
D2
res
CS4237B
D1
DS213PP4
D1
res
D0
D0
res