M30245 Group
Figure 2.8.15. Setting example of frequency synthesizer division
RESET
FSE
LS
USBC5
USBC7
Figure 2.8.16. Setup timing of frequency synthesizer after hardware reset
Rev.2.00 Oct 16, 2006
REJ09B0340-0200
FSP
f(X
)
IN
1/1
12MHz
(FF
)
16
FSP: Frequency synthesizer prescaler
FSM: Frequency synthesizer multiplier
FSD: Frequency synthesizer divider
page 144 of 354
FSD
FSM
f
PIN
f
VCO
4
Invalid
(01
)
(255
16
f
USB
48MHz
Enable frequency synthesizer
Wait for 3ms
Enable USB clock
Enable USB function control unit
f
SYN
)
16
2. USB function