7.7
PIO timings
The PIO cycle timings meet Mode 4 of the ATA/ATAPI-6 description.
CS(1:0)-
DA(2:0)
DIOR-,
DIOW-
Write data
DD(15:0)
Read data
DD(15:0)
IORDY
PARAMETER DESCRIPTION
t0
Cycle time
t1
Address valid to DIOR-/DIOW- setup
t2
DIOR-/DIOW- pulse width
t2i
DIOR-/DIOW- recovery time
t3
DIOW- data setup
t4
DIOW- data hold
t5
DIOR- data setup
t6
DIOR- data hold
t6z
DIOR- data tristate
t9
DIOR-/DIOW- to address valid hold
tRD
Read data valid to IORDY active
tA
IORDY setup width
tB
IORDY pulse width
Figure 5. PIO cycle timings
Travelstar 5K160 (PATA) Hard Disk Drive Specification
t1
tA
t9
t0
t2
t3
t4
t5
t6
t6z
tRD
tB
MIN (ns)
120
25
70
25
20
10
20
5
–
10
0
–
–
43 / 188
t2i
MAX. (ns)
–
–
–
–
–
–
–
–
30
–
–
35
1,250