CS43130 Datasheet, PDF (110/137 Pages) Cirrus Logic – 130-dB, 32-Bit High-Performance DAC with Integrated Headphone Driver

CS43130
7.5 Headphone and PCM Registers
Bits
Name
Description
6 PHCOMP_ Low-latency and phase-compensated filter selection
LOWLATB _{0 (Default) Low-latency is selected.}
1 Phase-compensated filter is selected.
5
NOS
Nonoversampling emulation mode on. When enabled, FILTER_SLOW_FASTB and PHCOMP_LOWLATB are ignored.
0 (Default) NOS emulation mode is off.
1 NOS emulation mode is on.
4:2
—
Reserved
1 HIGH_PASS High-pass filter enable.
0 High-pass filter is disabled.
1 (Default) High-pass filter is selected.
0 DEEMP_ON Deemphasis filter on.
0 (Default) Deemphasis for 44.1 kHz is disabled.
1 Deemphasis for 44.1 kHz is enabled.
7.5.3 PCM Volume B
Address 0x90001
R/W
7
6
5
4
3
2
1
0
PCM_VOLUME_B
Default
0
1
1
1
1
0
0
0
Bits
Name
Description
7:0
PCM_ Digital volume control registers for PCM channel B. It allows independent control of the signal level in 1/2 dB increments
VOLUME_B from 0 to –127 dB. Volume settings are decoded as shown below. The volume changes are dictated by the PCM_SZC
bits. The same rule applies to PCM_VOLUME_A setting.
0000 0000 0 dB
0000 0001 –0.5 dB
...
01111000 –60 dB (Default)
...
1111 1110 –127 dB
1111 1111 Digital mute
7.5.4 PCM Volume A
R/W
7
6
5
4
3
2
PCM_VOLUME_A
Default
0
1
1
1
1
0
Bits
Name
Description
7:0
PCM_ Digital volume control registers for channel A. See PCM_VOLUME_B for description.
VOLUME_A
Address 0x90002
1
0
0
0
7.5.5 PCM Path Signal Control 1
R/W
7
PCM_RAMP_
DOWN
6
PCM_VOL_
BEQA
5
4
PCM_SZC
Default
1
0
1
0
Address 0x90003
3
PCM_AMUTE
1
2
PCM_
AMUTEBEQA
0
1
0
PCM_MUTE_A PCM_MUTE_B
0
0
Bits
Name
Description
7 PCM_RAMP_ Soft volume ramp-down before filter mode change. A mute is performed before filter mode change and an unmute is
DOWN performed after executing the filter mode change.
0 Immediate mute is performed prior to executing a filter mode change
1 (Default) This mute and unmute is controlled by PCM_SZC.
6 PCM_VOL_ PCM_VOLUME_B equals PCM_VOLUME_A.
BEQA
0 (Default) Volume setting of both channels are controlled independently.
1 Volume setting of both channels are controlled by PCM_VOLUME_A. PCM_VOLUME_B is ignored.
5:4 PCM_SZC Soft ramp and zero cross control.
00 Immediate change
01 In PCM mode, zero cross change
10 (Default) Soft ramp
11 In PCM mode, soft ramp and zero crossings
110
DS1073F1