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44409
Rev.
1.70
October 10
AMD SP5100 Databook
System Clock Specifications
65
Table 9-8: PCI Express
®
Clock AC Specifications
Symbol
Parameter
Min
Max
Units
Note
T61
Clock Period
9.872
10.128
ns
SSC disabled
T62
Clock rise edge rate
0.6
4.0
V/ns
See Figure 9-2
and Note below
T63
Clock fall edge rate
0.6
4.0
V/ns
T64
Clock high period
3
7
ns
-
T65
Clock low period
3
7
ns
-
ViH
Diff Clock input high
+150
-
mV
ViL
Diff Clock input low
-
-150
mV
Vcross
Absolute crossing point
+250
+550
mV
-
Vcross delta
Variation across Vcross
-
+140
mV
-
Note:
Signal must be monotonic throughout the Rise and all time region.
Table 9-9: RTC 32-KHz Output Clock AC Specifications
RTC 32-KHZ output
Symbol
Parameter
Min
Max
Units
Note
T61
Clock Period
32.768
KHz
-
T62
Clock/Data rise time
2.2
0.33
V/ns
Nominal
voltage 3.3 V
T63
Clock/Data fall time
2.2
0.33
V/ns
T64
Clock high period
13.7
-
µs
-
T65
Clock low period
16.8
-
µs
-