Multiword Dma Timings; Figure 6. Multiword Dma Cycle Timings - Hitachi HTS541616J9AT00 - Travelstar 160 GB Hard Drive Specifications

7.8

Multiword DMA timings

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

Travelstar 5K160 (PATA) Hard Disk Drive Specification
tI
tD
tG
tLR/tLW
t0
tKR/tKW
tG
tF
tH
44 / 188
tJ
tZ
MIN (ns) MAX (ns)
120 –
70 –
– 50
5 –
20 –
10 –
0 –
5 –
25 –
– 35
– 25