Hitachi T7K250 - Deskstar - Hard Drive

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Deskstar T7K250 Hard Disk Drive Specification

6.9 Multi word DMA timings

The Multiword DMA timings meet Mode 2 of the ATA/ATAPI-6 description.

PARAMETER DESCRIPTION MIN (ns) MAX (ns)

t0 Cycle time 120 –

tD DIOR-/DIOW- asserted pulse width 70 –

tE DIOR- data access – 50

tF DIOR- data hold 5 –

tG DIOR-/DIOW- data setup 20 –

tH DIOW- data hold 10 –

tI DMACK- to -DIOR-/DIOW- setup 0 –

tJ DIOR-/DIOW- to DMACK- hold 5 –

tKR/tKW DIOR-/DIOW- negated pulse width 25 –

tLR/tLW DIOR-/DIOW- to DMARQ- delay – 35

tM CS (1:0) valid to DIOR-/DIOW- 25 -

tN CS (1:0) 10 -

tZ DMACK- to read data released – 25

WRITE DATA

READ DATA

DMACK-

DMARQ

DIOR-/DIOW-

tLR/tLW

tI tD

tKR/tKW

tFtG

CS0-/CS1-

Hitachi T7K250 - Deskstar - Hard Drive - Multi Word DMA Timings