Pio Timings; Figure 23. Pio Cycle Timings Chart; Figure 24. Pio Cycle Timings - IBM IC35L040AVVN07-0 - 40GB IDE Deskstar 120GXP 7200RPM UATA-100 07N9682 Specifications

6.2.2 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)
IOCS16-(*)
IORDY

Figure 23. PIO cycle timings chart

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
t7(*) Address valid to IOCS16– assertion
t8(*) Address invalid to IOCS16– negation
t9 DIOR–/DIOW– to address valid hold
tA IORDY set up time
tB IORDY pulse width

Figure 24. PIO cycle timings

t1 t1
t2
t7(*)
tA
tB
Deskstar 120GXP hard disk drive specifications
27
t9
t0
t2i
t3 t4
t5 t6
(*) Up to ATA-2 (mode-0,1,2)
MIN (ns) MAX (ns)
120 –
25 –
70 –
25 –
20 –
10 –
20 –
5 –
– 40
– 30
10 -
– 35
– 1250
t8(*)