CS43130 Datasheet, PDF (62/137 Pages) Cirrus Logic – 130-dB, 32-Bit High-Performance DAC with Integrated Headphone Driver

CS43130
5.9 Headphone Power-Up Sequence
5.9 Headphone Power-Up Sequence
An example of the power-up sequence for PCM and DSD are shown in Ex. 5-9 and Ex. 5-10, respectively. Follow the
stated sequence every time to power up the headphone output.
5.9.1 PCM Power-Up Sequence
Example 5-9. PCM Power-Up Sequence
STEP
TASK
REGISTER/BIT FIELDS
1 Run PCM power-up initialization sequence in Ex. 5-7.
2 Power up ASP
Power Down Control. 0x20000
3 Pop-free startup
4 Power on amplifier
PDN_XSP
PDN_ASP
PDN_DSDIF
PDN_HP
PDN_XTAL
PDN_PLL
PDN_CLKOUT
Reserved
0x1002C
Power Down Control. 0x20000
PDN_XSP
PDN_ASP
PDN_DSDIF
PDN_HP
PDN_XTAL
PDN_PLL
PDN_CLKOUT
Reserved
5 Wait for 10 ms
6 Restore defaults
0xC0006
0xC0002
0xC0009
7 Audio output will be active. Wait for 1000 ms.
8 Restore defaults
0x1002C
0x10010
VALUE
DESCRIPTION
data (0x20000)
AND (0xBF)
x
0
Power up ASP
x
x
x
x
x
x
0x0A
data (0x20000)
AND (0xEF)
x
x
x
0
Power up HP
x
x
x
x
0x0C
0x10
0x20
0x00
0x00
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