Fujitsu MB15E07SL User Manual page 14

MB15E07SL
PHASE COMPARATOR OUTPUT WAVEFORM
fr
fp
LD
[FC = "H"]
D
O
[FC = "L"]
D
O
Notes : Phase error detection range: –2 to +2
Pulses on Do signal during locked state are output to prevent dead zone.
LD output becomes low when phase is t
is t
WL
t and t
WU
t > 2/fosc (s) (e. g. t
WU
t < 4/fosc (s) (e. g. t
WU
LD becomes high during the power saving mode (PS = "L").
14
t
WU
or less and continues to be so for three cycles or more.
depend on OSC input frequency.
WL IN
> 156.3 ns, fosc = 12.8 MHz)
WU
< 312.5 ns, fosc = 12.8 MHz)
WL
t
WL
or more. LD output becomes high when phase error
WU