ppc440ep Applied Micro Circuits Corporation (AMCC), ppc440ep Datasheet - Page 70

• Manufacturer Part Number: ppc440ep
• Description: Powerpc 440ep Embedded Processor
• Manufacturer: Applied Micro Circuits Corporation (AMCC)

Figure 6. Input Setup and Hold Waveform
Figure 7. Output Delay and Float Timing Waveform
70
Table 18. Peripheral Interface Clock Timings (Continued)
Revision 1.29 – May 07, 2008
TmrClk input frequency
TmrClk period
TmrClk input high time
TmrClk input low time
Notes:
1. T
2. In RMII mode, a 50MHz +/- 50PPM input EMCRefClk is required. In SMII mode, a 125 MHz +/- 100PPM input EMCRefClk
Outputs
Float (High-Z)
Clock
Clock
Inputs
mum OPB clock frequency is 66.66 MHz.
is required.
OPB
Low (Drive)
High (Drive)
Data Sheet
is the period in ns of the OPB clock. The internal OPB clock runs at 1/2 the frequency of the PLB clock. The maxi-
1.25V
T
1.25V
T
OV
OH
max
min
Parameter
T
IS
min
Valid
T
T
40% of nominal period
40% of nominal period
OV
OH
Valid
max
min
Min
10
440EP – PPC440EP Embedded Processor
–
T
IH
min
60% of nominal period
60% of nominal period
Max
100
–
Valid
T
T
OV
OH
max
min
Units
MHz
ns
ns
ns
AMCC Proprietary
Notes