FDC37C672 View Datasheet(PDF) - SMSC -> Microchip

Part Name

Description

Manufacturer

FDC37C672

Enhanced Super I/O Controller with Fast IR

SMSC -> Microchip 

PCOBF

AUXOBF1

nWRT

IBF

nRD

Enhanced Super I/O Controller with Fast IR

Datasheet

t2

t1

t3

Figure 21.5 - Internal 8042 CPU Timing

NAME

t1

t2

t3

DESCRIPTION

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)

Note 21.9 IBF, nWRT and nRD are internal signals.

Note 21.10 PCOBF is used for the Keyboard IRQ.

Note 21.11 AUXOBF1 is used for the Mouse IRQ.

MIN TYP MAX UNITS

40

ns

40

ns

40

ns

SMSC FDC37C672

Page 150

DATASHEET

Rev. 10-29-03

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