Toshiba XM-7002B specifications 15/27, IOCS16 Iordy

6.2.2. Timing of Host Interface (PIO)

Figure 10 shows the Host Interface Timings.

Address valid*1

t2 t1

DIOR-/DIOW-

Write data valid*2

Read data valid*2

t0

t9

t2i

t8

t3

t4

t5

t6Z

t7 t6

IOCS16-

tA

IORDY

tB tRD

*1:Device Address consists of signals CS0-, CS1-, and DA2-0 *2:Data consists of DD0-15 (16-bit) or DD0-7 (8-bit)

	PIO Mode 4 timing parameters min(ns) max(ns)	Min Time (ns)	Max Time (ns)
t0	Cycle time	120
t1	Address valid to DIOR-/DIOW-setup	25
t2	DIOR-/DIOW- pulse wide	70
t2i	DIOR-/DIOW- recovery time	25
t3	DIOW- data setup	20
t4	DIOW- data hold	10
t5	DIOR- data setup	20
t6	DIOR- data hold	5
t6Z	DIOR- data tristate		30
t7	Addr valid to IOCS16- assertion		30
t8	Addr valid to IOCS16- negation		30
t9	DIOR-/DIOW- to address valid hold	10
tRD	Read Data Valid to IORDY active	0
tA	IORDY setup time		35
tB	IORDY pulse wide		1250

Figure 10 Host Interface Timin

15/27 XM-7002B Rev.1.0