MB15F72SP
4. SERIAL DATA INPUT TIMING
Frequency multiplier setting is performed through a serial interface using the Data pin, Clock pin, and LE pin.
Setting data is read into the shift register at the rise of the clock signal, and transferred to a latch at the rise of
the LE signal. The following diagram shows the data input timing.
2nd data
1st data
Invalid data
Control bit
Data
MSB
LSB
Clock
t1
t2
t3
t6
t7
LE
t4
t5
Parameter
Min. Typ. Max. Unit
Parameter
Min. Typ. Max. Unit
t1
t2
t3
t4
20
20
30
30
ns
ns
ns
ns
t5
t6
t7
100
20
ns
ns
ns
100
Note : LE should be “L” when the data is transferred into the shift register.
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