wm8918 Wolfson Microelectronics plc, wm8918 Datasheet - Page 105

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

Production Data
Table 68 Example FLL Settings
w
32.768 kHz
32.768 kHz
32.768 kHz
48 kHz
12.000 MHz
12.000 MHz
12.288 MHz
12.288 MHz
13.000 MHz
13.000 MHz
19.200 MHz
19.200 MHz
F
REF
12.288 MHz
12.288 MHz
12.288 MHz
11.288576
MHz
11.2896
MHz
12.288 MHz
11.289597
MHz
11.2896
MHz
12.287990
MHz
11.289606
MHz
12.287988
MHz
11.289588
MHz
F
OUT
EXAMPLE FLL SETTINGS
Table 68 provides example FLL settings for generating common SYSCLK frequencies from a variety
of low and high frequency reference inputs.
Divide by 1
(0h)
Divide by 1
(0h)
Divide by 1
(0h)
Divide by 1
(0h)
Divide by 1
(0h)
Divide by 1
(0h)
Divide by 1
(0h)
Divide by 1
(0h)
Divide by 1
(0h)
Divide by 1
(0h)
Divide by 2
(1h)
Divide by 2
(1h)
FLL_CLK_
REF_DIV
98.304
MHz
90.308608
MHz
90.3168
MHz
98.304
MHz
98.3040
MHz
90.3168
MHz
98.304
MHz
90.3168
MHz
98.3040
MHz
90.3168
MHz
98.3039
MHz
90.3168
MHz
F
VCO
187
(0BBh)
344
(158h)
344
(158h)
256
(100h)
8
(008h)
7
(007h)
8
(008h)
7
(007h)
7
(007h)
6
(006h)
5
(005h)
4
(004h)
FLL_N
0.5
(8000h)
0.5
(8000h)
0.53125
(8800h)
0
(0000h)
0.192
(3127h)
0.526398
(86C2h)
0
(0000h)
0.35
(599Ah)
0.56184
(8FD5h)
0.94745
(F28Ch)
0.119995
(1EB8h)
0.703995
(B439h)
FLL_K
16
(4h)
8
(3h)
8
(3h)
8
(3h)
1
(0h)
1
(0h)
1
(0h)
1
(0h)
1
(0h)
1
(0h)
1
(0h)
1
(0h)
FRATIO
PD, Rev 4.0, September 2010
FLL_
8
(7h)
8
(7h)
8
(7h)
8
(7h)
8
(7h)
8
(7h)
8
(7h)
8
(7h)
8
(7h)
8
(7h)
8
(7h)
8
(7h)
OUTDIV
FLL_
WM8918
1
1
1
0
1
1
0
1
1
1
1
1
FRACN
_ENA
FLL_
105