Travelstar 80GN Hard Disk Drive Specification
46
7.8 Multi word DMA timings
The Multi word DMA timings meet Mode 2 of the ATA/ATAPI-6 description.
Table 27: Multiword DMA cycle timings
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- negated pulse width / DIOW- negated pulse width
25
–
tLR/tLW
DIOR- to DMARQ delay / DIOW- to DMARQ delay
–
35
tZ
DMACK- to read data released
–
25
WRITE DD(15:0)
READ DD(15:0)
DMACK-
DMARQ
DIOR-/DIOW-
t0
tLR/tLW
tJ
tI
tD
tKR/tKW
tF
tG
tH
tG
tZ
tE
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