Hitachi HTS541680J9AT00 Specifications - Page 44
Multiword DMA timings
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Travelstar 5K160 (PATA) Hard Disk Drive Specification 7.8 Multiword DMA timings The Multiword DMA timings meet Mode 2 of the ATA/ATAPI-6 description. DMARQ tLR/tLW DMACKDIOR-/DIOWREAD DD(15:0) WRITE DD(15:0) t0 tI tD tKR/tKW tG tF tG tH tJ tZ 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 6. Multiword DMA cycle timings MIN (ns) 120 70 - 5 20 10 0 5 25 - - MAX (ns) - - 50 - - - - - - 35 25 44/188
Travelstar 5K160 (PATA) Hard Disk Drive Specification
44
/
188
7.8
Multiword 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 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
Figure 6. Multiword DMA cycle timings
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