ppc440epx Applied Micro Circuits Corporation (AMCC), ppc440epx Datasheet - Page 76

• Manufacturer Part Number: ppc440epx
• Description: Powerpc 440epx Embedded Processor
• Manufacturer: Applied Micro Circuits Corporation (AMCC)

440EPx – PPC440EPx Embedded Processor
Table 19. Peripheral Interface Clock Timings (Sheet 2 of 3)
76
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
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
Preliminary Data Sheet
83.33
16.66
83.33
Max
Revision 1.29 – July 22, 2008
30
60
48
–
–
–
OPB
1
+2ns)
Units
MHz
MHz
MHz
MHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
AMCC Proprietary
Notes
1
1
1
1
3
3
3
3