AMD SP5100, Data Book, Page: 65 / 90

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
See Figure 9-3
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 -