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CS43131 Datasheet(PDF) 66 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) 66 Page - Cirrus Logic

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66
DS1155F1
CS43131
5.7 Headphone Power-Up Sequence
5.7 Headphone Power-Up Sequence
An example of the power-up sequence for PCM and DSD are shown in Ex. 5-5 and Ex. 5-6, respectively. Follow the stated
sequence every time to power up the headphone output.
5.7.1
PCM Power-Up Sequence
2
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
3
Wait for interrupt. Check for PDN_DONE_INT = 1 in Interrupt Status 1 register (0xF0000).
4
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
Example 5-5. PCM Power-Up Sequence
STEP
TASK
REGISTER/BIT FIELDS
VALUE
DESCRIPTION
1 Pop-free power-up settings
0x10010
0x99
0x80032
0x20
2 Power on appropriate interface.Power Down Control. 0x20000
data (0x20000)
AND (0xBF)
PDN_XSP
PDN_ASP
PDN_DSDIF
PDN_HP
PDN_XTAL
PDN_PLL
PDN_CLKOUT
Reserved
x
0
x
x
x
x
x
0
Power up ASP
3 Power on amplifier
Power Down Control. 0x20000
data (0x20000)
AND (0xEF)
PDN_XSP
PDN_ASP
PDN_DSDIF
PDN_HP
PDN_XTAL
PDN_PLL
PDN_CLKOUT
Reserved
x
x
x
0
x
x
x
0
Power up HP
4 Wait for 12 ms
5 Restore default settings
0x80032
0x00
0x10010
0x00
Example 5-4. DSD Power Down Sequence (Cont.)
STEP
TASK
REGISTER/BIT FIELDS
VALUE
DESCRIPTION



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