Datasheet

FS98O22
Rev. 1.6 45/146
Table 5-14 shows the relation between clock signals and the register flags. Please see Table 5-14)
Table 5-14 register and the beeper clock selection table
M0_CK M1_CK M3_CK S_BEEP MCK CLK beep clock
1 0 0 1 32768 32768
4096
1 0 1 1 16384 16384
4096
1 1 0 1 32768 8192
4096
1 1 1 1 16384 4096
4096
0 0 0 0 1000000 1000000
4000
0 0 1 0 1000000 1000000
4000
0 0 0 1 1000000 1000000
2666.6667
0 0 1 1 1000000 1000000
2666.6667
0 1 0 0 1000000 250000
1000
0 1 1 0 1000000 250000
1000
0 1 0 1 1000000 250000
666.6667
0 1 1 1 1000000 250000
666.6667
1 0 0 0 32768 32768
131.072
1 0 1 0 16384 16384
65.536
1 1 0 0 32768 8192
32.768
1 1 1 0 16384 4096
16.384
5.5. Voltage Doubler Operation Frequency
FS98O22 embeds a switching voltage regulator. Users can use M0_CK and S_PCK register flags to decide the
operation frequency as in Table 5-15 and Table 5-16.
Table 5-15 MCK selection table
M3_CK M0_CK
MCK
X 0 ICK
0 1 ECK
1 1 ECK/2
Table 5-16 Voltage Doubler operation frequency selection table
M0_CK S_PCK
V
oltage Doubler Operation Frequency
0 0 MCK/200
0 1 MCK/100
1 X ECK/32 (1024 HZ)
FORTUNE'
Properties
For Reference Only