wm8918 Wolfson Microelectronics plc, wm8918 Datasheet - Page 121

• Manufacturer Part Number: wm8918
• Description: Ultra Low Power Dac For Portable Audio Applications
• Manufacturer: Wolfson Microelectronics plc

26 (1Ah)
27 (1Bh)
28 (1Ch)
29 (1Dh)
30 (1Eh)
25 (19h)
31 (1Fh)
32 (20h)
33 (21h)
34 (22h)
35 (23h)
36 (24h)
37 (25h)
38 (26h)
Production Data
w
WSEQ
INDEX
REGISTER
ADDRESS
R94 (5Eh)
R90 (5Ah)
R90 (5Ah)
R94 (5Eh)
R14 (0Eh)
R15 (0Fh)
R67 (43h)
R98 (62h)
R18 (12h)
R22 (16h)
R4 (04h)
R5 (05h)
R5 (05h)
R5 (05h)
WIDTH
8 bits
8 bits
8 bits
8 bits
4 bits
2 bits
2 bits
2 bits
8 bits
1 bit
1 bit
1 bit
1 bit
1 bit
SHUTDOWN SEQUENCE
The Shutdown sequence is initiated by writing 0119h to Register R111 (6Fh). This single operation
starts the Control Write Sequencer at Index Address 25 (19h) and executes the sequence defined in
Table 82.
For typical clocking configurations with MCLK=12.288MHz, this sequence takes approximately
350ms to run.
START
Bit 0
Bit 0
Bit 0
Bit 0
Bit 0
Bit 0
Bit 2
Bit 1
Bit 0
Bit 0
Bit 0
Bit 0
Bit 0
Bit 0
DATA
77h
77h
00h
00h
00h
00h
00h
00h
00h
00h
00h
00h
00h
00h
DELAY
Ch
0h
0h
0h
0h
0h
0h
0h
0h
0h
0h
0h
9h
0h
EOS
0b
0b
0b
0b
0b
0b
0b
0b
0b
0b
0b
0b
0b
0b
LINEOUTL_RMV_SHORT = 0
LINEOUTR_RMV_SHORT = 0
(delay = 0.5625ms)
HPL_RMV_SHORT = 0
HPR_RMV_SHORT = 0
(delay = 0.5625ms)
HPL_ENA_OUTP = 0
HPL_ENA_DLY = 0
HPL_ENA = 0
HPR_ENA_OUTP = 0
HPR_ENA_DLY = 0
HPR_ENA = 0
(delay = 0.5625ms)
LINEOUTL_ENA_OUTP = 0
LINEOUTL_ENA_DLY = 0
LINEOUTL_ENA = 0
LINEOUTR_ENA_OUTP = 0
LINEOUTR_ENA_DLY = 0
LINEOUTR_ENA = 0
(delay = 0.5625ms)
DCS_ENA_CHAN_0 = 0
DCS_ENA_CHAN_1 = 0
DCS_ENA_CHAN_2 = 0
DCS_ENA_CHAN_3 = 0
(delay = 0.5625ms)
CP_ENA = 0
(delay = 0.5625ms)
DACL_ENA = 0
DACR_ENA = 0
(delay = 0.5625ms)
CLK_DSP_ENA = 0
(delay = 0.5625ms)
HPL_PGA_ENA = 0
HPR_PGA_ENA = 0
(delay = 0.5625ms)
LINEOUTL_PGA_ENA = 0
LINEOUTR_PGA_ENA = 0
(delay = 0.5625ms)
BIAS_ENA = 0
(delay = 0.5625ms)
VMID_ENA = 0
(delay = 256.5ms)
VMID_ENA = 0
(delay = 32.5ms)
VMID_BUF_ENA = 0
VMID_RES[1:0] = 00
DESCRIPTION
PD, Rev 4.0, September 2010
WM8918
121