Revision 1.02 – January 11, 2005
PPC405CR – PowerPC 405CR Embedded Processor
Data Sheet
Table 11. Clocking Specifications
Symbol
Parameter
Min
Max
Units
CPU
PFC
PTC
Processor clock frequency
133.33/200/266.66
7.5/5/3.75
MHz
ns
Processor clock period
SysClk Input
SCFC
Clock input frequency
25
15
66.66
40
MHz
ns
SCTC
SCTCS
SCTCH
SCTCL
Clock period
Clock edge stability (phase jitter, cycle to cycle)
Clock input high time
± 0.15
ns
40% of nominal period 60% of nominal period
40% of nominal period 60% of nominal period
ns
Clock input low time
ns
Note: Input slew rate > 2V/ns
MemClkOut Output
MCOFC
MCOTC
MCOFC
MCOTC
MCOFC
MCOTC
MCOTCS
MCOTCH
MCOTCL
Clock output frequency @ PFC = 133MHz
66.66
MHz
ns
Clock period @ PFC = 133MHz
Clock output frequency @ PFC = 200MHz
Clock period @ PFC = 200MHz
Clock output frequency @ PFC = 266MHz
Clock period @ PFC = 266MHz
Clock edge stability (phase jitter, cycle to cycle)
Clock output high time
15
100
MHz
ns
10
133.33
MHz
ns
7.5
± 0.2
ns
45% of nominal period 55% of nominal period
45% of nominal period 55% of nominal period
ns
Clock output low time
ns
Other Clocks
VCOFC
VCO frequency
400
800
66.66
100
MHz
MHz
MHz
MHz
MHz
MHz
MHz
PLBFC
PLBFC
PLBFC
OPBFC
OPBFC
OPBFC
PLB frequency @ PFC = 133MHz
PLB frequency @ PFC = 200MHz
PLB frequency @ PFC = 266MHz
OPB frequency @ PFC = 133MHz
OPB frequency @ PFC = 200MHz
OPB frequency @ PFC = 266MHz
133.33
33.33
50
66.66
Figure 5. Timing Waveform
2.0V
1.5V
0.8V
T
T
CL
CH
T
C
32
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AMCC [ APPLIED MICRO CIRCUITS CORPORATION ]
