Multiword Dma Timings; Figure 37. Multiword Dma Cycle Timings - IBM DJSA-210 - Travelstar 10 GB Hard Drive Specifications
2.5 inch ata/ide hard disk drive
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7.8
Multiword DMA timings
The Multiword DMA timings meet Mode 2 of the ATA-3 description.
DMARQ
DMACK-
DIOR-/DIOW-
READ DD(15:0)
WRITE DD(15:0)
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- negated pulse width / DIOW- negated pulse width
tLR/tLW
DIOR- to DMARQ delay / DIOW- to DMARQ delay
tZ
DMACK- to read data released
Figure 37. Multiword DMA cycle timings
tI
tD
tG
Travelstar 32GH/30GT/20GN hard disk drive specifications
tLR/tLW
t0
tKR/tKW
tG
tF
tH
48
tJ
tZ
MIN (ns)
MAX (ns)
120
–
70
–
–
50
5
–
20
–
10
–
0
–
5
–
25
–
–
35
–
25
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