Fujitsu MHT2040AT 用户手册

5-130

C141-E192-01EN

Figure 5.9 shows of the data transfer timing between the device and the host
system.

t6

t12

t11

t10

t5

t4

t3

t9

t2i

t2

t1

t0

Addresses

IORDY

Read data
DD0-DD15

Write data
DD0-DD15

DIOR-/DIOW-

Symbol

Timing parameter

Min.

Max.

Unit

t0

Cycle time

  120

—

ns

t1

Data register selection setup time for DIOR-/DIOW-

    25

—

ns

t2

Pulse width of DIOR-/DIOW-

    70

—

ns

t2i

Recovery time of DIOR-/DIOW-

    25

—

ns

t3

Data setup time for DIOW-

    20

—

ns

t4

Data hold time for DIOW-

    10

—

ns

t5

Time from DIOR- assertion to read data available

—

50

ns

t6

Data hold time for DIOR-

      5

—

ns

t9

Data register selection hold time for DIOR-/DIOW-

    10

—

ns

t10

Time from DIOR-/DIOW- assertion to IORDY "low" level

—

35

ns

t11

Time from validity of read data to IORDY "high" level

      0

—

ns

t12

Pulse width of IORDY

—

1,250

ns