Fujitsu MHW2040AC, MHW2060AC manual Timing, PIO data transfer

5.6 Timing

5.6 Timing

5.6.1 PIO data transfer

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

t0

Addresses

	t1			t2				t9
DIOR-/DIOW-
Write data									t2i
DD0-DD15
					t3		t4
Read data
DD0-DD15
		t5					t6
IORDY	t10					t11
			t12
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

Figure 5.9 PIO data transfer timing

C141-E258 5-149