WM5102 Datasheet, PDF (250/334 Pages) Wolfson Microelectronics plc – Audio Hub CODEC with Voice Processor DSP

WM5102
Production Data
EXAMPLE FLL SETTINGS
Table 108 provides example FLL settings for generating 49.152MHz or 24.576MHz SYSCLK from a
variety of low and high frequency reference inputs.
FSOURCE
32.000 kHz
FOUT (MHz)
FREF
N.K
FRATIO FVCO (MHz) OUTDIV FLLn_N
FLLn_
FLLn_
Divider
THETA
LAMBDA
49.152
1
192
16
98.304
2
0C0h
32.000 kHz
24.576
1
192
16
98.304
4
0C0h
32.768 kHz
49.152
1
187.5
16
98.304
2
0BBh
0001h
0002h
32.768 kHz
24.576
1
187.5
16
98.304
4
0BBh
0001h
0002h
48 kHz
49.152
1
128
16
98.304
2
080h
48 kHz
24.576
1
128
16
98.304
4
080h
128 kHz
49.152
1
96
8
98.304
2
060h
128 kHz
24.576
1
96
8
98.304
4
060h
512 kHz
49.152
1
96
2
98.304
2
060h
512 kHz
24.576
1
96
2
98.304
4
060h
1.536 MHz
49.152
1
64
1
98.304
2
040h
1.536 MHz
24.576
1
64
1
98.304
4
040h
3.072 MHz
49.152
1
32
1
98.304
2
020h
3.072 MHz
24.576
1
32
1
98.304
4
020h
11.2896 MHz 49.152
1
8.7075
1
98.304
2
008h
0068h
0093h
11.2896 MHz 24.576
1
8.7075
1
98.304
4
008h
0068h
0093h
12.000 MHz 49.152
1
8.192
1
98.304
2
008h
0018h
007Dh
12.000 MHz 24.576
1
8.192
1
98.304
4
008h
0018h
007Dh
12.288 MHz 49.152
1
8
1
98.304
2
008h
12.288 MHz 24.576
1
8
1
98.304
4
008h
13.000 MHz 49.152
1
7.5618
1
98.304
2
007h
0391h
0659h
13.000 MHz 24.576
1
7.5618
1
98.304
4
007h
0391h
0659h
19.200 MHz 49.152
2
10.24
1
98.304
2
00Ah
0006h
0019h
19.200 MHz 24.576
2
10.24
1
98.304
4
00Ah
0006h
0019h
24 MHz
49.152
2
8.192
1
98.304
2
008h
0018h
007Dh
24 MHz
24.576
2
8.192
1
98.304
4
008h
0018h
007Dh
26 MHz
49.152
2
7.5618
1
98.304
2
007h
0391h
0659h
26 MHz
24.576
2
7.5618
1
98.304
4
007h
0391h
0659h
27 MHz
49.152
2
7.2818
1
98.304
2
007h
013Dh
0465h
27 MHz
24.576
2
7.2818
1
98.304
4
007h
013Dh
F_OUT = (F_SOURCE / F_REF Divider) * N.K * FRATIO / OUTDIV
The values of N and K are contained in the FLLn_N, FLLn_THETA and FLLn_LAMBDA registers as shown above.
See Table 104 and Table 105 for the coding of the FLLn_REFCLK_DIV, FLLn_FRATIO and FLLn_OUTDIV registers.
Table 108 Example FLL Settings
0465h
w
PD, June 2014, Rev 4.2
250