XC228X_08 Datasheet, PDF (102/125 Pages) Infineon Technologies AG – 16/32-Bit Single-Chip Microcontroller with 32-Bit Performance

XC2287 / XC2286 / XC2285
XC2000 Family Derivatives
Electrical Parameters
Acc. jitter D_T
ns
±9
±8
±7
±6
±5
±4
±3
±2
±1
0
1
f_SYS = 33 MHz f_SYS = 66 MHz
f_VCO = 66 MHz
fVCO = 132 MHz
Cycles T
20
40
60
80
100
MC_XC 2X_JITTER
Figure 19 Approximated Accumulated PLL Jitter
Note: The specified PLL jitter values are valid if the capacitive load per pin does not
exceed C_L = 20 pF (see Table 12).
The maximum peak-to-peak noise on the pad supply voltage (measured between
V_DDPB pin 100/144 and V_SS pin 1) is limited to a peak-to-peak voltage of V_PP =
50 mV. This can be achieved by appropriate blocking of the supply voltage as
close as possible to the supply pins and using PCB supply and ground planes.
Different frequency bands can be selected for the VCO so that the operation of the PLL
can be adjusted to a wide range of input and output frequencies:
Table 25 VCO Bands for PLL Operation¹⁾
PLLCON0.VCOSEL VCO Frequency Range
Base Frequency Range
00
50 … 110 MHz
10 … 40 MHz
01
100 … 160 MHz
20 … 80 MHz
1X
Reserved
1) Not subject to production test - verified by design/characterization.
Data Sheet
100
V2.1, 2008-08