AMD SP5100, Data Book, Page: 64 / 90

AMD SP5100 Databook 44409 Rev. 1.70 October 10
64
System Clock Specifications
48 MHz USB
Symbol Parameter Min Max Units Note
- Max Jitter - 130 ps -
- Duty Cycle 45 55 % -
Notes:
1
Clock frequency tolerance is +/- 100 ppm
2 VIL= 0.4 V ; VILmax = 0.6 V and VILmin = 0 V
VIH = 2.4 V; VIHmax=VDDR and VIHmin = 2.0 V
Table 9-5: RTC X1 Clock AC Specifications
RTC X1 Clock
Symbol Parameter Min Max Units Note
T61 Clock Period Typical at 32.7 kHz 1
T62 Clock/Data rise time 0.5 5
μ
s
2
T63 Clock/Data fall time 0.5 5
μ
s
T64 Clock high period 13 17
μ
s
T65 Clock low period 13 17
μ
s
- Duty Cycle 45 55 % -
- Frequency Tolerance -20 20 PPM -
Notes
1
Min/Max specifications depend on accuracy of the crystal used.
2 VIL= 0.25 V ; VILmax = 250 mV and VILmin = 0 V
VIH = 0.75 V; VIHmax=1V and VIHmin = 750 mV
Table 9-6: LPC Clock AC Specifications
LPC Clock
Symbol Parameter Min Max Units Note
T61 Clock Period 30 33.3 ns -
T62 Clock/Data rise time - 3 ns -
T63 Clock/Data fall time - 3 ns -
T64 Clock high period 12 - ns -
T65 Clock low period 12 - ns -
Table 9-7: PCI Clock AC Specifications
PCI Clock (6 clocks, PCICLK[5:0])
Symbol Parameter Min Max Units Note
T61 Clock Period 30 33.3 ns -
T62 Clock/Data rise time - 3.0 ns -
T63 Clock/Data fall time - 3.0 ns -
T64 Clock high period 12 - ns -
T65 Clock low period 12 - ns -