PPC440EPX-NPAFFFTS AMCC [Applied Micro Circuits Corporation], PPC440EPX-NPAFFFTS Datasheet - Page 77
PPC440EPX-NPAFFFTS
Manufacturer Part Number
PPC440EPX-NPAFFFTS
Description
PowerPC 440EPx Embedded Processor
Manufacturer
AMCC [Applied Micro Circuits Corporation]
Datasheet
1.PPC440EPX-NPAFFFTS.pdf
(94 pages)
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Revision 1.26 – October 15, 2007
Table 19. Peripheral Interface Clock Timings (Sheet 2 of 3)
AMCC Proprietary
Preliminary Data Sheet
PerClk (and OPB Clock) frequency (for ext. master or sync.
slaves)
PerClk period
PerClk high time
PerClk low time
UARTSerClk frequency
UARTSerClk period
UARTSerClk high time
UARTSerClk low time
USB2Clk frequency
USB2Clk period
USB2XtalIn/USB2XtalOut frequency
USB2XtalIn/USB2XtalOut period
USB2XtalIn/USB2XtalOut high time
USB2XtalIn/USB2XtalOut low time
Parameter
50% of nominal period
33% of nominal period
40% of nominal period
40% of nominal period
440EPx – PPC440EPx Embedded Processor
33.33MHz
2T
T
T
OPB
OPB
16.66
OPB
20.8
Min
12
60
12
–
1
1
1
+1
+1
+2
66% of nominal period
50% of nominal period
60% of nominal period
60% of nominal period
1000 / (2T
83.33
16.66
83.33
Max
30
60
48
–
–
–
OPB
1
+2ns)
Units
MHz
MHz
MHz
MHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Notes
1
1
1
1
3
3
3
3
77
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