ppc440spe Applied Micro Circuits Corporation (AMCC), ppc440spe Datasheet - Page 65

• Manufacturer Part Number: ppc440spe
• Description: Powerpc 440spe Embedded Processor
• Manufacturer: Applied Micro Circuits Corporation (AMCC)

PowerPC 440SPe Embedded Processor
I/O Specifications
AMCC Proprietary
Table 13. Peripheral Interface Clock Timings
PCIX0Clk input frequency (asynchronous mode)
PCIX0Clk period (asynchronous mode)
PCIX0Clk input high time
PCIX0Clk input low time
EMCMDClk output frequency
EMCMDClk period
EMCMDClk output high time
EMCMDClk output low time
EMCTxClk input frequency
EMCTxClk period
EMCTxClk input high time
EMCTxClk input low time
EMCRxClk input frequency
EMCRxClk period
EMCRxClk input high time
EMCRxClk input low time
PerClk output frequency (for sync. slaves)
PerClk period
PerClk output high time
PerClk output low time
UARTSerClk input frequency
UARTSerClk period
UARTSerClk input high time
UARTSerClk input low time
TmrClk input frequency
TmrClk period
TmrClk input high time
TmrClk input low time
Notes:
1. T OPB is the period in ns of the OPB clock. The internal OPB clock runs at an integral divisor ratio of the frequency of
2. When the PCI-X interface is used to support a legacy PCI interface, the maximum PCIXClk frequency is 66.66MHz.
the PLB clock. The maximum OPB clock frequency is 83.33 MHz. Refer to the Clocking chapter of the PPC440SPe
Embedded Processor User’s Manual for details.
Parameter
40% of nominal period
40% of nominal period
35% of nominal period
35% of nominal period
35% of nominal period
35% of nominal period
50% of nominal period
33% of nominal period
40% of nominal period
40% of nominal period
2T OPB +2
T OPB +1
T OPB +1
Min
400
160
160
2.5
7.5
2.5
40
40
12
10
–
–
–
–
–
60% of nominal period
60% of nominal period
66% of nominal period
50% of nominal period
60% of nominal period
60% of nominal period
1000/(2T OPB
Preliminary Data Sheet
133.33
83.33
Max
400
400
100
2.5
25
25
–
–
–
–
–
–
–
–
–
–
–
–
–
Revision 1.23 - Sept 21, 2006
1
+2ns)
Units
MHz
MHz
MHz
MHz
MHz
MHz
MHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Notes
2
1
1
1
1
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