DS1113F1
53
CS4399
5.9 Audio Output Power-Up Sequence
5.9.2
DSD Power-Up Sequence
Example 5-6. DSD Power-Up Sequence
S
TEP
T
ASK
R
EGISTER
/B
IT
F
IELDS
V
ALUE
D
ESCRIPTION
1 Run DSD power-up initialization sequence in
2 Power on appropriate interface.Power Down Control. 0x20000
data (0x20000)
AND (0xHH)
For DoP on XSP, HH = 7F.
For DoP on ASP, HH = BF.
For DSD interface, HH = DF.
PDN_XSP
PDN_ASP
PDN_DSDIF
PDN_HP
PDN_XTAL
PDN_PLL
PDN_CLKOUT
Reserved
B
B
B
x
x
x
x
x
XSP interface enable
ASP interface enable
DSD interface enable
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
0
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