Hp Control Register; Class H Register; Mixer - Cirrus Logic CS42L42 Manual

7.13 HP Control Register

7.13.1 HP Control
R/W
7
Default 0
Bits Name
7:4 — Reserved
3 ANA_MUTE_ Analog mute Channel B. See
B
0 Unmuted
1 (Default) Muted
2 ANA_MUTE_ Analog mute Channel A. See
A
0 Unmuted
1 (Default) Muted
1 FULL_ Full-scale volume. Determines the maximum volume for the headphone output.
0 (Default) 0 dB
SCALE_VOL
1 –6 dB. This setting is recommended if the load is approximately 15 .
0 — Reserved

7.14 Class H Register

7.14.1 Class H Control
R/W
7
Default 0
Bits Name
7:3 — Reserved
2:0 ADPTPWR Adaptive power adjustment. Configures how power to HP output amplifiers adapts to the output signal level.
gives detailed descriptions of supported settings.
000 Reserved
001 Fixed, Mode 0—VP_CP Mode (±2.5V)
010 Fixed, Mode 1—VCP Mode (±VCP)
011 Fixed, Mode 2 —VCP/2 Mode (±VCP/2)

7.15 Mixer

7.15.1 Mixer Channel A Input Volume
R/W
7
—
Default
0
Bits Name
7:6 — Reserved
5:0 MIXER_ Input attenuation. Sets the attenuation level to be applied to various stereo digital inputs. See
CHA_ can be muted or attenuated from –62 to 0 dB in 1-dB steps.
VOL
00 0000 0 dB
00 0001 –1.0 dB ...
DS1083F2
6 5
—
0 0
Section 4.4
Section 4.4
6 5
—
0 0
6 5
0 1
11 1110 –62.0 dB
11 1111 (Default) Mute. If the SRC is enabled, the ASP outputs nonzero data until ASP_DAO_PDN
is either toggled or set.
4 3
ANA_MUTE_B ANA_MUTE_A FULL_SCALE_VOL
0 1
Description
for details.
for details.
4 3
0 0
Description
100 Fixed, Mode 3 —VCP/3 Mode (±VCP/3)
101–110 Reserved
111 (Default) Adapt to signal. The output signal dynamically determines
the voltage level.
4 3
MIXER_CHA_VOL
1 1
Description
CS42L42
7.13 HP Control Register
Address 0x2001
2 1
1 0
See Section 4.4 for details.
Address 0x2101
2 1
ADPTPWR
1 1
Address 0x2301
2 1
1 1
Section 4.2 for details. Each input
0
—
1
0
1
Section 4.4
0
1
155