wm8918 Wolfson Microelectronics plc, wm8918 Datasheet - Page 120
wm8918
Manufacturer Part Number
wm8918
Description
Ultra Low Power Dac For Portable Audio Applications
Manufacturer
Wolfson Microelectronics plc
Datasheet
1.WM8918.pdf
(175 pages)
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10 (0Ah)
11 (0Bh)
12 (0Ch)
13 (0Dh)
14 (0Eh)
15 (0Fh)
16 (10h)
17 (11h)
18 (12h)
19 (13h)
20 (14h)
21 (15h)
22 (16h)
23 (17h)
24 (18h)
WM8918
Table 81 Start-up Sequence
w
8 (08h)
9 (09h)
WSEQ
INDEX
R255 (FFh)
R255 (FFh)
R255 (FFh)
R255 (FFh)
R255 (FFh)
REGISTER
ADDRESS
R90 (5Ah)
R94 (5Eh)
R90 (5Ah)
R94 (5Eh)
R90 (5Ah)
R94 (5Eh)
R90 (5Ah)
R94 (5Eh)
R98 (62h)
R67 (43h)
R68 (44h)
R4 (04h)
WIDTH
8 bits
8 bits
8 bits
8 bits
4 bits
8 bits
8 bits
8 bits
8 bits
8 bits
1 bit
1 bit
1 bit
1 bit
1 bit
1 bit
1 bit
START
Bit 0
Bit 4
Bit 0
Bit 0
Bit 0
Bit 0
Bit 0
Bit 0
Bit 0
Bit 0
Bit 0
Bit 0
Bit 0
Bit 0
Bit 0
Bit 0
Bit 0
DATA
0Fh
F0h
FFh
FFh
00h
00h
01h
00h
11h
11h
33h
33h
00h
77h
77h
00h
00h
DELAY
Ch
0h
0h
6h
0h
0h
0h
0h
0h
0h
0h
0h
0h
0h
0h
0h
0h
EOS
0b
0b
0b
0b
0b
0b
0b
0b
0b
0b
0b
0b
0b
0b
1b
0b
0b
DACR_ENA = 1
(delay = 2.5ms)
Dummy Write for expansion
(delay = 0.5625ms)
(delay = 0.5625ms)
CP_ENA = 1
(delay = 4.5ms)
Dummy Write for expansion
(delay = 0.5625ms)
HPL_ENA = 1
HPR_ENA = 1
(delay = 0.5625ms)
LINEOUTL_ENA = 1
LINEOUTR_ENA = 1
(delay = 0.5625ms)
HPL_ENA_DLY = 1
HPR_ENA_DLY = 1
(delay = 0.5625ms)
LINEOUTL_ENA_DLY = 1
LINEOUTR_ENA_DLY = 1
(delay = 0.5625ms)
DCS_ENA_CHAN_0 = 1
DCS_ENA_CHAN_1 = 1
DCS_ENA_CHAN_2 = 1
DCS_ENA_CHAN_3 = 1
(delay = 0.5625ms)
DCS_TRIG_STARTUP_0 = 1
DCS_TRIG_STARTUP_1 = 1
DCS_TRIG_STARTUP_2 = 1
DCS_TRIG_STARTUP_3 = 1
(delay = 256.5ms)
Dummy Write for expansion
(delay = 0.5625ms)
HPL_ENA_OUTP = 1
HPR_ENA_OUTP = 1
(delay = 0.5625ms)
LINEOUTL_ENA_OUTP = 1
LINEOUTR_ENA_OUTP = 1
(delay = 0.5625ms)
HPL_RMV_SHORT = 1
HPR_RMV_SHORT = 1
(delay = 0.5625ms)
LINEOUTL_RMV_SHORT = 1
LINEOUTR_RMV_SHORT = 1
End of Sequence
Spare
Spare
DESCRIPTION
PD, Rev 4.0, September 2010
Production Data
120
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