FDC37C672QFP SMSC Corporation, FDC37C672QFP Datasheet - Page 150

• Manufacturer Part Number: FDC37C672QFP
• Description: ENHANCED SUPER I/O CONTROLLER WITH FAST IR
• Manufacturer: SMSC Corporation

Note 21.9
Note 21.10 PCOBF is used for the Keyboard IRQ.
Note 21.11 AUXOBF1 is used for the Mouse IRQ.
SMSC FDC37C672
NAME
t1
t2
t3
nWRT deasserted to AUXOBF1 asserted (Note 21.9, Note 21.10)
nWRT deasserted to PCOBF asserted (Note 21.9, Note 21.11)
nRD deasserted to IBF deasserted (Note 21.9)
AUXOBF1
IBF, nWRT and nRD are internal signals.
PCOBF
nWRT
nRD
IBF
DESCRIPTION
Figure 21.5 - Internal 8042 CPU Timing
DATASHEET
Page 150
t3
t2
t1
MIN
Enhanced Super I/O Controller with Fast IR
TYP
MAX
40
40
40
Rev. 10-29-03
UNITS
Datasheet
ns
ns
ns