Multi Word Dma Timings - Hitachi T7K250 - Deskstar - Hard Drive Specifications

6.9 Multi word DMA timings

The Multiword DMA timings meet Mode 2 of the ATA/ATAPI-6 description.
CS0-/CS1-
DMARQ
DMACK-
DIOR-/DIOW-
READ DATA
WRITE DATA
PARAMETER DESCRIPTION
t0 Cycle time
tD DIOR-/DIOW- asserted pulse width
tE DIOR- data access
tF DIOR- data hold
tG DIOR-/DIOW- data setup
tH DIOW- data hold
tI DMACK- to -DIOR-/DIOW- setup
tJ DIOR-/DIOW- to DMACK- hold
tKR/tKW DIOR-/DIOW- negated pulse width
tLR/tLW DIOR-/DIOW- to DMARQ- delay
tM CS (1:0) valid to DIOR-/DIOW-
tN CS (1:0)
tZ DMACK- to read data released
tM
t0
tI tD
tG
tE
tG
Deskstar T7K250 Hard Disk Drive Specification
34
tLR/tLW
tKR/tKW
tF
tH
MIN (ns)
120
70
20
10
25
25
10
tN
tJ
tZ
MAX (ns)
–
–
– 50
5 –
–
–
0 –
5 –
–
– 35
-
-
– 25