參數(shù)資料
型號： XC161CJ
廠商： INFINEON TECHNOLOGIES AG
英文描述： 16-Bit Single-Chip Microcontroller
中文描述： 16位單片機
文件頁數(shù)： 65/79頁
文件大?。?/td> 2440K
代理商： XC161CJ
XC161
Derivatives
Timing Parameters
Data Sheet
61
V2.2, 2003-06
For a period of
N
×
TCM the accumulated PLL jitter is defined by the deviation D
N
:
D
N
[ns] =
±
(1.5 + 6.32
×
N
/
f
MC
);
f
MC
in [MHz],
N
= number of consecutive TCMs.
So, for a period of 3 TCMs @ 20 MHz and K = 12: D
3
=
±
(1.5 + 6.32
×
3
/
20) = 2.448 ns.
This formula is applicable for K
×
N
< 95. For longer periods the K
×
N
=95 value can be
used. This steady value can be approximated by: D
N
max
[ns] =
±
(1.5 + 600
/
(K
×
f
MC
)).
Figure 15
Approximated Accumulated PLL Jitter
Note: The bold lines indicate the minimum accumulated jitter which can be achieved by
selecting the maximum possible output prescaler factor K.
Different frequency bands can be selected for the VCO, so the operation of the PLL can
be adjusted to a wide range of input and output frequencies:
VCO Bands for PLL Operation
1)
PLLCON.PLLVB VCO Frequency Range
00
100
…
150 MHz
01
150
…
200 MHz
10
200
…
250 MHz
11
Reserved
Table 15
1)
Values guaranteed by design characterisation.
Base Frequency Range
20
…
80 MHz
40
…
130 MHz
60
…
180 MHz
mcb04413_xc.vsd
Acc. jitter
D
N
ns
±8
±6
±4
±2
±1
0
5
10
20
25
N
1 MH
K=5
20MHz
40 MHz
±7
±5
±3
15
K=6
K=12
K=15
K=8
K=10
1
相關PDF資料
PDF描述
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相關代理商/技術參數(shù)
參數(shù)描述
XC161CJ_02 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:16-Bi t Single-Chip Microcontroller Preliminary
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