Figure B-4 Jitter Definitions; Figure B-5 Maximum Bus Clock Jitter Approximation - Motorola MC9S12C-Family User Manual

Device User Guide — 9S12C128DGV1/D V01.05
0
t
min1
t
nom
t
max1
The relative deviation of t
number of clock periods (N).
Defining the jitter as:
For N < 100, the following equation is a good fit for the maximum jitter:
J(N)

Figure B-5 Maximum bus clock jitter approximation

114
1 2

Figure B-4 Jitter Definitions

is at its maximum for one clock period, and decreases towards zero for larger
nom
J N = max 1
–
J N
1 5 10
3
t
minN
t
maxN
t N t
max min
, 1
-------------------- - – -------------------- -
N t N t
nom
j
1
j
= ------- - +
2
N
20
N-1 N
N
nom
N