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WM8903 Datasheet(PDF) 170 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) 170 Page - Wolfson Microelectronics plc

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WM8903
Production Data
w
PD, Rev 4.5, June 2012
170
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
101 = FVCO / 6
110 = FVCO / 7
111 = FVCO / 8
Recommended that this register is not changed from
default.
5:3
FLL_OUTDIV
[2:0]
000
FOUT clock divider
000 = 2
001 = 4
010 = 8
011 = 16
100 = 32
101 = 64
110 = 128
111 = 256
(FOUT = FVCO / FLL_OUTDIV)
2:0
FLL_FRATIO
[2:0]
000
FVCO clock divider
000 = divide by 1
001 = divide by 2
010 = divide by 4
011 = divide by 8
1XX = divide by 16
000 recommended for FREF > 1MHz
100 recommended for FREF < 64kHz
Register 81h FLL Control 2
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
R130 (82h)
FLL Control
3
15:0
FLL_K [15:0]
0000_0000
_0000_000
0
Fractional multiply for FREF
(MSB = 0.5)
Register 82h FLL Control 3
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
R131 (83h)
FLL Control
4
9:0
FLL_N [9:0]
00_0000_0
000
Integer multiply for FREF
(LSB = 1)
Register 83h FLL Control 4
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
R164 (A4h)
Clock Rate
Test 4
9
ADC_DIG_MIC
0
Enables Digital Microphone mode.
0 = Audio DSP input is from ADC
1 = Audio DSP input is from digital microphone
interface
Register A4h Clock Rate Test 4



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