wm8918 Wolfson Microelectronics plc, wm8918 Datasheet - Page 159

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

Production Data
Register 75h FLL Control 2
Register 76h FLL Control 3
Register 77h FLL Control 4
w
FLL Control
FLL Control
REGISTER
REGISTER
REGISTER
R118 (76h)
R119 (77h)
ADDRESS
ADDRESS
ADDRESS
3
4
15:0
14:5
BIT
BIT
BIT
2:0
3:0
FLL_FRATIO[2
FLL_GAIN[3:0]
FLL_K[15:0]
FLL_N[9:0]
LABEL
LABEL
LABEL
:0]
0000_0000
_0000_000
01_0111_0
DEFAULT
DEFAULT
DEFAULT
0000
111
111
0
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.
FVCO clock divider
000 = 1
001 = 2
010 = 4
011 = 8
1XX = 16
000 recommended for FREF > 1MHz
100 recommended for FREF < 64kHz
Fractional multiply for FREF
(MSB = 0.5)
Integer multiply for FREF
(LSB = 1)
FLL Gain applied to error
0000 = x 1 (Recommended value)
0001 = x 2
0010 = x 4
0011 = x 8
0100 = x 16
0101 = x 32
0110 = x 64
0111 = x 128
1000 = x 256
Recommended that these are not changed from
default.
DESCRIPTION
DESCRIPTION
DESCRIPTION
PD, Rev 4.0, September 2010
REFER TO
REFER TO
REFER TO
WM8918
159