Preliminary
PowerNP NPe405L Embedded Processor Data Sheet
Peripheral Interface Clock Timings
Parameter
Min
Max
2.5
–
Units
MHz
ns
EMC0MDClk output frequency
EMC0MDClk period
–
400
EMC0MDClk output high time
EMC0MDClk output low time
PHY0TxClk input frequency
PHY0TxClk period
160
–
ns
160
–
ns
2.5
25
400
–
MHz
ns
40
PHY0TxClk input high time
PHY0TxClk input low time
PHY0RxClk input frequency
PHY0RxClk period
35% of nominal period
ns
35% of nominal period
–
ns
2.5
25
400
–
MHz
ns
40
PHY0RxClk input high time
PHY0RxClk input low time
PerClk output frequency–133MHz
PerClk period–133MHz
35% of nominal period
ns
35% of nominal period
–
ns
–
30
–
33.33
–
MHz
ns
PerClk output frequency–200MHz
PerClk period–200MHz
50
–
MHz
ns
20
–
PerClk output frequency–266MHz)
PerClk period–266MHz
66.66
–
MHz
ns
15
PerClk output high time
45% of nominal period 55% of nominal period
45% of nominal period 55% of nominal period
ns
PerClk output low time
ns
1000/(2T
+ 2ns)
–
MHz
ns
UARTSerClk input frequency (Note 1)
UARTSerClk period
OPB
–
2T
T
+ 2
+ 1
+ 1
OPB
UARTSerClk input high time
–
ns
OPB
T
UARTSerClk input low time
TmrClk input frequency–133MHz
TmrClk period–133MHz
TmrClk input frequency–200MHz
TmrClk period–200MHz
TmrClk input frequency–266MHz
TmrClk period–266MHz
TmrClk input high time
–
ns
MHz
ns
OPB
–
33.33
30
–
–
50
MHz
ns
20
–
–
66.66
–
MHz
ns
15
40% of nominal period 60% of nominal period
40% of nominal period 60% of nominal period
ns
TmrClk input low time
ns
HDLCEXTxClk, HDLCEXRxClk
Notes:
0
8.192
MHz
1. T
is the period in ns of the OPB clock. The maximum OPB clock frequency is 33.33 MHz for 133MHz parts, 50 MHz for
OPB
200MHz parts, and 66.66MHz for 266MHz parts.
44
AMCC [ APPLIED MICRO CIRCUITS CORPORATION ]
