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CS43131 Datasheet(PDF) 68 Page - Cirrus Logic

Part # CS43131
Description  130-dB, 32-Bit High-Performance DAC with Integrated Headphone Driver and Impedance Detection
PDF  156 Pages
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Manufacturer  CIRRUS [Cirrus Logic]
Direct Link  http://www.cirrus.com
Logo CIRRUS - Cirrus Logic

CS43131 Datasheet(HTML) 68 Page - Cirrus Logic

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68
DS1155F1
CS43131
5.8 Power-Down Sequence in External VCPFILT Mode
5.8.2
DSD Pop-Free Power-Down Sequence in External VCPFILT Mode
7 Power down ASP
Power Down Control. 0x20000
data(0x20000)
OR (0x40)
PDN_XSP
PDN_ASP
PDN_DSDIF
PDN_HP
PDN_XTAL
PDN_PLL
PDN_CLKOUT
Reserved
x
1
x
x
x
x
x
x
Turn off ASP
8 Unmute both channels
PCM Path Signal Control 1. 0x90003
data(0x90003)
AND (0xFC)
PCM_RAMP_DOWN
PCM_VOL_BEQA
PCM_SZC
PCM_AMUTE
PCM_AMUTEBEQA
PCM_MUTE_A
PCM_MUTE_B
x
x
xx
x
x
0
0
Channel A is unmuted
Channel B is unmuted
9 Restore default settings
0x80046
0x10010
0x20
0x00
STEP
TASK
REGISTER/BIT FIELDS
VALUE
DESCRIPTION
1
Pop-free power-down settings
0x10010
0x80046
0x99
0x21
2
Mute both channels
DSD Processor Path Signal Control 1.
0x70002
data(0x70002)
OR (0x03)
DSD_RAMP_UP
DSD_VOL_BEQA
DSD_SZC
Reserved
DSD_AMUTE
DSD_AMUTE_BEQA
DSD_MUTE_A
DSD_MUTE_B
x
x
x
x
x
x
1
1
Channel A is muted
Channel B is muted
3
Wait 150 ms for mute to occur
4
Enable PDN_DONE interrupt
Interrupt Mask 1. 0xF0010
data(0xF0010)
AND (0xFE)
DAC_OVFL_INT_MASK
HPDETECT_PLUG_INT_MASK
HPDETECT_UNPLUG_INT_MASK
XTAL_READY_INT_MASK
XTAL_ERROR_INT_MASK
PLL_READY_INT_MASK
PLL_ERROR_INT_MASK
PDN_DONE_INT_MASK
x
x
x
x
x
x
x
0
Enable PDN_DONE interrupt
5
Power down amplifier
Power Down Control. 0x20000
data(0x20000)
OR (0x10)
PDN_XSP
PDN_ASP
PDN_DSDIF
PDN_HP
PDN_XTAL
PDN_PLL
PDN_CLKOUT
Reserved
x
x
x
1
x
x
x
x
Turn off HP
6
Wait for interrupt. Check for PDN_DONE_INT = 1 in Interrupt Status 1 register (0xF0000).
7
Power down XSP/ASP/DSDIF interfaces Power Down Control. 0x20000
data(0x20000)
OR (0xE0)
PDN_XSP
PDN_ASP
PDN_DSDIF
PDN_HP
PDN_XTAL
PDN_PLL
PDN_CLKOUT
Reserved
1
1
1
x
x
x
x
x



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