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MC9S12DJ64 Datasheet, PDF (109/126 Pages) Motorola, Inc – MC9S12DJ64 Device User Guide V01.17 | |||
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MC9S12DJ64 Device User Guide â V01.17
0
1
tmin1
tnom
tmax1
2
3
tminN
tmaxN
N-1
N
Figure A-3 Jitter Definitions
The relative deviation of tnom is at its maximum for one clock period, and decreases towards zero for larger
number of clock periods (N).
Defining the jitter as:
J(N)
=

max
ï£
1 â t-N-m-----â
a---tx-n--(--o-N--m---) ,
1
â
N-t--m---â
--i-nt--n-(--o-N---m-)-



For N < 100, the following equation is a good fit for the maximum jitter:
J(N)
=
---j-1---
N
+
j2
J(N)
15
10
20
N
Figure A-4 Maximum bus clock jitter approximation
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