IBM Deskstar 120 GXP, Specifications

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6.2.3 Multiword DMA timings
The Multiword DMA timing meets Mode 2 of the ATA/ATAPI-6 description.
WRITE DATA
READ DATA
DMACK-
DMARQ
DIOR-/DIOW-
t0
tLR/tLW
tJ
tI tD tKR/tKW
tF tG
tH tG
tZ
CS0-/CS1-
tM
tN
tE
Figure 25. Multiword DMA cycle timing chart
25 – DMACK– to read data released tZ
– 10 CS (1:0) hold tN
– 25 CS (1:0) valid to DIOR–/DIOW– tM
35 – DIOR–/DIOW– to DMARQ– delay tLR/tLW
– 25 DIOR–/DIOW– negated pulse width tKR/tKW
– 5 DIOR–/DIOW– to DMACK– hold tJ
– 0 DMACK– to –DIOR–/DIOW– setup tI
– 10 DIOW– data hold tH
– 20 DIOR–/DIOW– data setup tG
– 5 DIOR– data hold tF
50 – DIOR– data access tE
– 70 DIOR–/DIOW– asserted pulse width tD
– 120 Cycle time t0
MAX (ns) MIN (ns) PARAMETER DESCRIPTION
Figure 26. Multiword DMA cycle timings
Deskstar 120GXP hard disk drive specifications
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