82801DB Datasheet, PDF (536/587 Pages) Intel Corporation – Intel 82801DB I/O Controller Hub 4 (ICH4)

Electrical Characteristics
Table 17-17. LPC Timing
Sym
Parameter
t150 LAD[3:0] Valid Delay from PCICLK Rising
t151 LAD[3:0] Output Enable Delay from PCICLK Rising
t152 LAD[3:0] Float Delay from PCICLK Rising
t153 LAD[3:0] Setup Time to PCICLK Rising
t154 LAD[3:0] Hold Time from PCICLK Rising
t155 LDRQ[1:0]# Setup Time to PCICLK Rising
t156 LDRQ[1:0]# Hold Time from PCICLK Rising
t157 LFRAME# Valid Delay from PCICLK Rising
Min Max Units Notes Fig
2
11
ns
17-3
2
ns
17-7
28
ns
17-5
7
ns
17-4
0
ns
17-4
12
ns
17-4
0
ns
17-4
2
12
ns
17-3
Table 17-18. Miscellaneous Timings
Sym
Parameter
t160 SERIRQ Setup Time to PCICLK Rising
t161 SERIRQ Hold Time from PCICLK Rising
t162 RI#, EXTSMI#, GPI, USB Resume Pulse Width
t163 SPKR Valid Delay from OSC Rising
t164 SERR# Active to NMI Active
t165 IGNNE# Inactive from FERR# Inactive
Min Max Units
Notes Fig
7
ns
17-4
0
ns
17-4
2
RTCCLK
17-6
200
ns
17-3
200
ns
230
ns
536
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