Fujitsu MPG3XXXAT manual Timing PIO data transfer, Dior-/Diow

5.6Timing

5.6.1PIO data transfer

Figure 5.8 shows of the data transfer timing between the device and the host system.

t0

Addresses

		t1			t2			t9
DIOR-/DIOW-									t2i
Write data
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 5.8 PIO data transfer timing

5 - 94 C141-E110-02EN