wm8918 Wolfson Microelectronics plc, wm8918 Datasheet - Page 101
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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Production Data
w
R116 (74h)
FLL Control 1
R117 (75h)
FLL Control 2
REGISTER
ADDRESS
13:8
BIT
6:4
2
1
0
FLL_CTRL_RAT
FLL_OSC_ENA
FLL_FRACN_E
FLL_OUTDIV
FLL_ENA
LABEL
E [2:0]
[5:0]
NA
DEFAULT
00_0000
000
0
0
0
FLL Fractional enable
0 = Integer Mode
1 = Fractional Mode
Fractional Mode
(FLL_FRACN_ENA=1) is
recommended in all cases
FLL Oscillator enable
0 = Disabled
1 = Enabled
FLL_OSC_ENA must be enabled
before enabling FLL_ENA.
Note that this field is required for free-
running FLL modes only.
FLL Enable
0 = Disabled
1 = Enabled
FLL_OSC_ENA must be enabled
before enabling FLL_ENA.
FLL FOUT clock divider
00_0000 = Reserved
00_0001 = Reserved
00_0010 = Reserved
00_0011 = 4
00_0100 = 5
00_0101 = 6
…
11_1110 = 63
11_1111 = 64
(FOUT = FVCO / FLL_OUTDIV)
Frequency of the FLL control block
000 = FVCO / 1 (Recommended
value)
001 = FVCO / 2
010 = FVCO / 3
011 = FVCO / 4
100 = FVCO / 5
101 = FVCO / 6
110 = FVCO / 7
111 = FVCO / 8
Recommended that these are not
changed from default.
PD, Rev 4.0, September 2010
DESCRIPTION
WM8918
101
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