FDC37B78X データシートの表示（PDF） - SMSC -> Microchip

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FDC37B78X

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

SMSC -> Microchip 

TABLE 93 - ISA READ TIMING

NAME

DESCRIPTION

MIN TYP MAX UNITS

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

10

ns

t2 nIOR asserted to nIOR deasserted

50

ns

t3 nIOR asserted to SA[x], nCS invalid

10

ns

t4 nIOR asserted to Data Valid

50

ns

t5 Data Hold/float from nIOR deasserted

10

25

ns

t6 nIOR deasserted

25

ns

t8 nIOR asserted after nIOW deasserted

80

ns

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

150

ns

t7 Parallel Port setup to nIOR asserted

20

ns

t9 nIOR asserted to PINTER deasserted

55

ns

t10 nIOR deasserted to FINTER deasserted

260

ns

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

80

ns

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

80

ns

t13 nIOW deasserted to AEN invalid

10

ns

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.

231

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