FDC37B78X View Datasheet(PDF) - SMSC -> Microchip

Part Name

Description

Manufacturer

FDC37B78X

Enhanced Super I/O Controller with ACPI Support, Real Time Clock and Consumer IR

SMSC -> Microchip 

8042 CPU

t2

PCOBF

t1

AUXOBF1

nWRT

t3

IBF

nRD

FIGURE 15 - INTERNAL 8042 CPU TIMING

TABLE 94 - INTERNAL 8042 CPU TIMING

NAME

DESCRIPTION

MIN TYP MAX UNITS

t1 nWRT deasserted to AUXOBF1 asserted (Notes 1,2)

40

ns

t2 nWRT deasserted to PCOBF asserted (Notes 1,3)

40

ns

t3 nRD deasserted to IBF deasserted (Note 1)

40

ns

Note 1: IBF, nWRT and nRD are internal signals.

Note 2: PCOBF is used for the Keyboard IRQ.

Note 3 AUXOBF1 is used for the Mouse IRQ.

232

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