Fujitsu MHV2080AS Manual Do Utilizador

 

C141-E221 

5-149 

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