81348 Datasheet, PDF (68/89 Pages) Intel Corporation – Two Integrated Intel XScale processors

Intel^® 81348—Electrical Specifications
4.3 Targeted AC Specifications
4.3.1 Clock Signal Timings
Table 21. PCI Clock Timings
Symbol
Parameter
PCI-X 133 PCI-X 100 PCI-X 66 PCI 66 PCI 33
Min. Max Min. Max Min. Max Min. Max Min. Max ^{Units Notes}
T_C1
PCI Clock Cycle Time
Jitter Class 1
7.5 11 10 15 15 22 15 25 30 50 ns 1
T_C2
PJiCttIeCr lColcakssCy2cle Time _{7.375 11 9.875 15 14.8 22 14.8 25 29.7 50}
1
T_CH1 PCI clock High Time
2.5
3
5.5
5.5
10
ns
TCL1 ^{PCI clock Low Time}
2.5
3
5.5
5.5
10
ns
PCI clock Period Jitter 125 -125 125 -125 200 -200 200 -200 300 -300 ps 3
TSR1 ^{PCI clock Slew Rate}
1.5 4 1.5 4 1.5 4 1.5 4 1 4 V/ns 2
PCI Spread Spectrum Requirements
f_mod
PfrCeIqucleoncckymodulation
30 33 30 33 30 33 30 33
KHz
f_spread ^{PspCrIecaldock frequency}
-1 0 -1 0 -1 0 -1 0
%
PCI Output Clocks
PCI output clock skew
250
350
350
350
350 ps
PjiCttIeroutput clock period _{100 -100 150 -150 150 -150 150 -150 150 -150 ps 4, 5}
Notes:
1.
2.
TTahhsseisecrstlloeecdwk.
frequency
rate must
may not change beyond the
be met across the minimum
spread-spectrum limits
peak-to-peak portion of
except while P_RST#
the clock waveform.
or
WARM_RST#
is
345...
IPTfehareiojdidtetvjeiitrattceilroansissbt2ehteiwndpeeeuvntiacaltoniocynksbiisnegtuwlseeepdeen,roiaoundtypousftintchgleolecckplsoecrckiaonadnnodof ttthhseeupacpvlooecrrktagjaietntdeprethrcileoadsasvoef1r.tahgeecploecrkio.d ^{of the clock.}
DInatteal^®sh8e1et348 ^{I/O Processor}
68
December 2007
Order Number: 315038-003US