FDC37B72X View Datasheet(PDF) - SMSC -> Microchip

Part Name

Description

Manufacturer

FDC37B72X

128 Pin Enhanced Super I/O Controller with ACPI Support

SMSC -> Microchip 

8042 CPU

t2

PCOBF

t1

AUXOBF1

nWRT

t3

IBF

nRD

FIGURE 16 - INTERNAL 8042 CPU TIMING

NAME

t1

t2

t3

TABLE 84 - INTERNAL 8042 CPU TIMING

DESCRIPTION

MIN

nWRT deasserted to AUXOBF1 asserted (Notes 1,2)

nWRT deasserted to PCOBF asserted (Notes 1,3)

nRD deasserted to IBF deasserted (Note 1)

TYP MAX UNITS

40

ns

40

ns

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.

212

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