PPC440GRX-NPAFFFTS AMCC [Applied Micro Circuits Corporation], PPC440GRX-NPAFFFTS Datasheet - Page 71

• Manufacturer Part Number: PPC440GRX-NPAFFFTS
• Description: PowerPC 440GRx Embedded Processor
• Manufacturer: AMCC [Applied Micro Circuits Corporation]

Table 19. Clocking Specifications
Revision 1.08 – October 15, 2007
Figure 5. Timing Waveform
Note:
AMCC Proprietary
Preliminary Data Sheet
SysClk Input
Note: Input slew rate ≥ 1V/ns
PLL VCO
Processor (CPU) Clock
MemClkOut and PLB Clock
MAL Clock
Notes:
1. The maximum supported processor clock frequency for any part is specified in the part number (see “Ordering and PVR Information” on
Symbol
page 5).
SysClk and GMCRefClk are 2.5V (3.3V tolerant). Slew rate should be measured between 0.7V and 1.7V.
T
T
T
T
F
T
F
T
F
T
F
T
F
T
CS
CH
CH
CL
C
C
C
C
C
C
C
C
C
C
Frequency
Period
Edge stability (cycle-to-cycle jitter)
High time
Low time
Frequency
Period
Frequency
Period
Frequency
Period
High time
Frequency
Period
Parameter
T
CH
T
40% of nominal period
40% of nominal period
45% of nominal period
440GRx – PPC440GRx Embedded Processor
C
333.33
133.33
33.33
0.750
Min
600
1.5
15
45
12
–
6
T
CL
60% of nominal period
60% of nominal period
55% of nominal period
1333.33
666.66
166.66
66.66
±0.15
83.33
Max
1.66
22.2
7.5
30
3
Units
0.7V (0.8V)
MHz
MHz
MHz
MHz
MHz
1.7V (2.0V)
ns
ns
ns
ns
ns
ns
ns
ns
ns
Notes
1
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