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WM8903 Datasheet(PDF) 161 Page - Wolfson Microelectronics plc

Part # WM8903
Description  Ultra Low Power CODEC for Portable Audio Applications
PDF  178 Pages
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Manufacturer  WOLFSON [Wolfson Microelectronics plc]
Direct Link  http://www.wolfsonmicro.com
Logo WOLFSON - Wolfson Microelectronics plc

WM8903 Datasheet(HTML) 161 Page - Wolfson Microelectronics plc

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Production Data
WM8903
w
PD, Rev 4.5, June 2012
161
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
R104 (68h)
Class W 0
0
CP_DYN_PWR
0
Enable dynamic charge pump power control
0 = charge pump controlled by volume register
settings
1 = charge pump controlled by real-time audio level
Register 68h Class W 0
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
R108 (6Ch)
Write
Sequencer 0
8
WSMD_CLK_ENA
0
Write Sequencer / Mic Detect Clock Enable.
0 = Disabled
1 = Enabled
4:0
WSEQ_WRITE_INDEX
[4:0]
0_0000
Sequence Write Index. This is the memory
location to which any updates to R109 and
R110 will be copied.
0 to 31 = RAM addresses
Register 6Ch Write Sequencer 0
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
R109 (6Dh)
Write
Sequencer 1
14:12
WSEQ_DATA_WIDTH
[2:0]
000
Width of the data block written in this
sequence step.
000 = 1 bit
001 = 2 bits
010 = 3 bits
011 = 4 bits
100 = 5 bits
101 = 6 bits
110 = 7 bits
111 = 8 bits
11:8
WSEQ_DATA_START
[3:0]
0000
Bit position of the LSB of the data block
written in this sequence step.
0000 = Bit 0
…
1111 = Bit 15
7:0
WSEQ_ADDR [7:0]
0000_0000 Control Register Address to be written to in
this sequence step.
Register 6Dh Write Sequencer 1
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
R110 (6Eh)
Write
Sequencer 2
14
WSEQ_EOS
0
End of Sequence flag. This bit indicates whether
the Control Write Sequencer should stop after
executing this step.
0 = Not end of sequence
1 = End of sequence (Stop the sequencer after this
step).
11:8
WSEQ_DELAY
[3:0]
0000
Time delay after executing this step.
Total delay time per step (including execution)=
62.5µs × (2^WSEQ_DELAY + 8)



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