52
DS1113F1
CS4399
5.9 Audio Output Power-Up Sequence
5.8.2
DSD Power-Up Initialization
5.9 Audio Output Power-Up Sequence
An example of the power-up sequence for PCM and DSD are shown in
, respectively. Follow the stated
sequence every time to power up the audio output.
5.9.1
PCM Power-Up Sequence
Example 5-4. DSD Power-Up Initialization
S
TEP
T
ASK
R
EGISTER
/B
IT
F
IELDS
V
ALUE
D
ESCRIPTION
1 DSD Power-Up Initialization
0x10010
0x99
0x10025
0x01
0x1002E
0x00
0xC0006
0x01
0xC0002
0x12
0xC0009
0x00
0xC0003
0x1E
0xC0005
0x20
Example 5-5. PCM Power-Up Sequence
S
TEP
T
ASK
R
EGISTER
/B
IT
F
IELDS
V
ALUE
D
ESCRIPTION
1 Run PCM power-up initialization sequence in
.
2 Power up ASP
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
x
Power up ASP
3 Pop-free startup
0x1002C
0x0A
4 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
x
Power up DAC output
5 Wait for 10 ms
6 Restore defaults
0xC0006
0x0C
0xC0002
0x10
0xC0009
0x20
7 Audio output will be active. Wait for 1000 ms.
8 Restore defaults
0x1002C
0x00
0x10010
0x00