PPC440GR-3PBFFFCX AMCC [Applied Micro Circuits Corporation], PPC440GR-3PBFFFCX Datasheet - Page 65

• Manufacturer Part Number: PPC440GR-3PBFFFCX
• Description: Power PC 440GR Embedded Processor
• Manufacturer: AMCC [Applied Micro Circuits Corporation]

I/O Specifications
Table 16. Peripheral Interface Clock Timings
AMCC Proprietary
440GR – PPC440GR Embedded Processor
PCIClk input frequency (asynchronous mode)
PCIClk period (asynchronous mode)
PCIClk input high time
PCIClk input low time
EMCMDClk output frequency
EMCMDClk period
EMCMDClk output high time
EMCMDClk output low time
EMCTxClk input frequency MII(RMII)
EMCTxClk period MII(RMII)
EMCTxClk input high time
EMCTxClk input low time
EMCRxClk input frequency MII(RMII)
EMCRxClk period MII(RMII)
EMCRxClk input high time
EMCRxClk input low time
PerClk (and OPB Clock) output frequency (for ext. master or
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
TmrClk1 input frequency
TmrClk1 period
TmrClk1 input high time
TmrClk1 input low time
Notes:
1. T
2. See Table 7 for information on the TmrClk2 signal.
frequency is 66.66 MHz.
OPB
is the period in ns of the OPB clock. The internal OPB clock runs at 1/2 the frequency of the PLB clock. The maximum OPB clock
Parameter
35% of nominal period
35% of nominal period
40% of nominal period
40% 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
T
T
40(20)
40(20)
2.5(5)
2.5(5)
OPB
OPB
Min
400
160
160
OPB
15
15
10
–
–
–
–
–
+1
+1
+2
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
Preliminary Data Sheet
400(200)
400(200)
Revision 1.16 – July 19, 2006
25(50)
25(50)
66.66
66.66
Max
100
2.5
–
–
–
–
–
–
–
–
–
OPB
–
–
–
–
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
1
1
1
1
2
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