Revision 1.26 – October 15, 2007
440EPx – PPC440EPx Embedded Processor
Preliminary Data Sheet
Table 18. Clocking Specifications (continued)
Symbol
Parameter
Min
Max
Units
Notes
TC
Period
1.5
3
ns
MemClkOut and PLB Clock
FC
TC
Frequency
Period
133.33
6
166.66
7.5
MHz
ns
45% of nominal
period
55% of nominal
period
TCH
High time
ns
MAL Clock
FC
Frequency
Period
45
12
83.33
22.2
MHz
ns
TC
Figure 5. Timing Waveform
1.7V (2.0V)
0.7V (0.8V)
T
T
CL
CH
T
C
Note: SysClk and GMCRefClk are 2.5V (3.3V tolerant). Slew rate should be measured between 0.7V and 1.7V.
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AMCC Proprietary