IBM IC25N020ATDA04 - Travelstar 20 GB Hard Drive - PIO Timings; Figure 41. PIO Cycle Timings

7.7 PIO timings
The PIO cycle timings meet Mode 4 of the ATA-5 description.
IOCS16-(*)
t9
t0
t2
t2i
t3 t4
t5
t8(*)
t7(*)
t1
tB
Read data
DD(15:0)
DIOR-,
DIOW-
CS(1:0)-
DA(2:0)
Write data
DD(15:0)
IORDY
(*) Up to ATA-2 (mode-0,1,2)
t6z
tRD
tA
t6
1,250
–
IORDY pulse width
tB
35
–
IORDY setup width
tA
–
0
Read data valid to IORDY active
tRD
–
10
DIOR-/DIOW- to address valid hold
t9
30
–
Address valid to IOCS16- released
t8(*)
40
–
Address valid to IOCS16- assertion
t7(*)
30
–
DIOR- data tristate
t6z
–
5
DIOR- data hold
t6
–
20
DIOR- data setup
t5
–
10
DIOW- data hold
t4
–
20
DIOW- data setup
t3
–
25
DIOR-/DIOW- recovery time
t2i
–
70
DIOR-/DIOW- pulse width
t2
–
25
Address valid to DIOR-/DIOW- setup
t1
–
120
Cycle time
t0
MAX. (ns)
MIN (ns)
PARAMETER DESCRIPTION
Figure 41. PIO cycle timings
Travelstar 48GH, 30GN & 15GN hard disk drive specifications
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