Production Data
WM8352
12.4.2 EXAMPLE FLL SETTINGS
Table 18 provides example FLL settings for generating common SYSCLK frequencies from a variety
of low and high frequency reference inputs.
FREF
FOUT
12.288
FVCO
FLL_N
FLL_K
FLL_
RATIO
FLL_
OUTDIV
FLL_FRAC
FLL_REF_
FREQ
32.000
kHz
98.304
438
0.857143
(DB6Eh)
7
8
7
8
8
7
1
1
1
3
1
1
1
1
1
2h
1
1
MHz
MHz
(1B6h)
(divide by
8)
32.000
kHz
11.2896
MHz
90.3168
MHz
352
0.8
2h
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
(160h)
(CCCCh)
(divide by
8)
32.768
kHz
12.288
MHz
98.304
MHz
428
0.571429
(9249 h)
2h
(1ACh)
(divide by
8)
32.768
kHz
11.288576
MHz
90.308608
MHz
344
0.500000
(8000 h)
2h
(158h)
(divide by
8)
32.768
kHz
11.2896
MHz
90.3168
MHz
344
0.53125
(8800h)
2h
(158h)
(divide by
8)
48
12.288
MHz
98.304
MHz
292
0.571429
(9249 h)
2h
kHz
(124h)
(divide by
8)
11.3636
MHz
12.368544
MHz
98.948354
MHz
8
0.707483
(B51Dh)
2h
(008h)
(divide by
8)
12.000
MHz
12.288
MHz
98.3040
MHz
8
0.192
2h
(008h)
(3127h)
(divide by
8)
12.000
MHz
11.289597
MHz
90.3168
MHz
7
0.526398
(86C2h)
2h
(007h)
(divide by
8)
12.288
MHz
12.288
MHz
98.304
MHz
2
0.666667
(AAABh)
2h
(002h)
(divide by
8)
12.288
MHz
11.2896
MHz
90.3168
MHz
7
0.35
2h
(007h)
(599Ah)
(divide by
8)
13.000
MHz
12.287990
MHz
98.3040
MHz
7
0.56184
(8FD5h)
2h
(007h)
(divide by
8)
13.000
MHz
11.289606
MHz
90.3168
MHz
6
0.94745
(F28Ch)
2h
(006h)
(divide by
8)
19.200
MHz
12.287988
MHz
98.3040
MHz
5
0.119995
(1EB8h)
2h
(005h)
(divide by
8)
19.200
MHz
11.289588
MHz
90.3168
MHz
4
0.703995
(B439h)
2h
(004h)
(divide by
8)
Table 18 Example FLL Settings
PD, February 2011, Rev 4.4
59
w
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
