FDC37B80X View Datasheet(PDF) - SMSC -> Microchip

Part Name

Description

Manufacturer

FDC37B80X

PC98/99 compliant enhanced super I/O controller with Keyboard / Mouse Wake-Up / 5 Volt Operation

SMSC -> Microchip 

NAME

ISA READ TIMING

DESCRIPTION

t1 SA[x], nCS and AEN valid to nIOR asserted

t2 nIOR asserted to nIOR deasserted

t3 nIOR asserted to SA[x], nCS invalid

t4 nIOR asserted to Data Valid

t5 Data Hold/float from nIOR deasserted

t6 nIOR deasserted

t8 nIOR asserted after nIOW deasserted

t8 nIOR/nIOR, nIOW/nIOW transfers from/to ECP FIFO

t7 Parallel Port setup to nIOR asserted

t9 nIOR asserted to PINTER deasserted

t10 nIOR deasserted to FINTER deasserted

t11 nIOR deasserted to PCOBF deasserted (Notes 3,5)

t12 nIOR deasserted to AUXOBF1 deasserted (Notes 4,5)

t13 nIOW deasserted to AEN invalid

Note 1: FINTR refers to the IRQ used by the floppy disk.

Note 2: PINTR refers to the IRQ used by the parallel port.

Note 3: PCOBF is used for the Keyboard IRQ.

Note 4: AUXOBF1 is used for the Mouse IRQ.

Note 5: Applies only if deassertion is performed in hardware.

MIN TYP MAX UNITS

10

ns

50

ns

10

ns

50

ns

10

25

ns

25

ns

80

ns

150

ns

20

ns

55

ns

260

ns

80

ns

80

ns

10

ns

168

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