Deskstar T7K500 Hard Disk Drive Specification
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6.7 PIO timings
The PIO cycle timings meet Mode 4 of the ATA/ATAPI-6 description.
Table 17: PIO cycle timings chart
6.7.1 Write DRQ interval time
For write sectors and write multiple operations 3.8 ms is inserted from the end of negation of the DRQ bit until set-
ting of the next DRQ bit.
6.7.2 Read DRQ interval time
For read sectors and read multiple operations the interval from the end of negation of the DRQ bit until setting of
the next DRQ bit is as follows:
PARAMETER DESCRIPTION MIN (ns) MAX (ns)
t0 Cycle time
120 –
t1 Address valid to DIOR-/DIOW- setup
25 –
t2 DIOR-/DIOW- pulse width
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–
t9 DIOR-/DIOW- to address valid hold
10 –
tA IORDY setup width
–35
tB IORDY pulse width
–1250
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