wm8918 Wolfson Microelectronics plc, wm8918 Datasheet - Page 156
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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WM8918
Register 5Eh Analogue Lineout 0
Register 62h Charge Pump 0
Register 68h Class W 0
Register 6Ch Write Sequencer 0
w
Sequencer 0
R108 (6Ch)
REGISTER
REGISTER
REGISTER
REGISTER
R104 (68h)
ADDRESS
ADDRESS
ADDRESS
ADDRESS
Class W 0
R98 (62h)
Pump 0
Charge
Write
BIT
BIT
BIT
BIT
4:0
1
0
0
0
8
LINEOUTR_EN
LINEOUTR_EN
CP_DYN_PWR
WSEQ_WRITE
WSEQ_ENA
_INDEX[4:0]
CP_ENA
LABEL
LABEL
LABEL
LABEL
A_DLY
A
DEFAULT
DEFAULT
DEFAULT
DEFAULT
0_0000
0
0
0
0
0
1 = Enabled
For normal operation, this bit should be set to 1 after
the DC offset cancellation has been scheduled.
Enables LINEOUTR intermediate stage
0 = Disabled
1 = Enabled
For normal operation, this bit should be set to 1 after
the output signal path has been configured, and before
DC offset cancellation is scheduled. This bit should be
set with at least 20us delay after LINEOUTR_ENA.
Enables LINEOUTR input stage
0 = Disabled
1 = Enabled
For normal operation, this bit should be set as the first
step of the LINEOUTR Enable sequence.
Enable charge-pump digits
0 = disable
1 = enable
Enable dynamic charge pump power control
0 = Charge pump controlled by volume register settings
(Class G)
1 = Charge pump controlled by real-time audio level
(Class W)
Class W is recommended for lowest power
consumption.
Write Sequencer Enable.
0 = Disabled
1 = Enabled
Sequence Write Index. This is the memory location to
which any updates to R109 and R110 will be copied.
0 to 31 = RAM addresses
DESCRIPTION
DESCRIPTION
DESCRIPTION
DESCRIPTION
PD, Rev 4.0, September 2010
REFER TO
REFER TO
REFER TO
REFER TO
Production Data
156
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