Fujitsu MHV2080AS, MHV2060AS, MHV2040AS manual Timing, PIO data transfer timing

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-E221 5-149