IBM IC25N040ATCS04 - Travelstar 40 GB Hard Drive - 7.9.5 Initiating Write DMA

7.9.5 Initiating Write DMA
HSTROBE
DDMARDY-
DMACK-
DMARQ
STOP
tUI
tACK
tENV
tZIORDY
tLI
tUI tCYC
t2CYC
DD(15:0)
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
xxx xxx
Host drives DD
tDH
tDS
WT Data
WT Data
WT Data
tACK
tCYC
–4.6–5–5–5–5–5Data Hold time at devicetDH
–4–5–7–7–10–15Data setup time at devicetDS
–38–57–86–115–154–230Two cycle timet2CYC
–16.8–25–39–54–73–112Cycle timetCYC
75010001000150015001500Limited interlock timetLI
–0–0–0–0–0–0
Minimum time before driving
IORDY
tZIORDY
552055205520702070207020Envelope timetENV
–20–20–20–20–20–20Setup time for DMACK-tACK
–0–0–0–0–0–0Unlimited interlock timetUI
MAX
(ns)
MIN
(ns)
MAX
(ns)
MIN
(ns)
MAX
(ns)
MIN
(ns)
MAX
(ns)
MIN
(ns)
MAX
(ns)
MIN
(ns)
MAX
(ns)
MIN
(ns)
MODE 5MODE 4MODE 3MODE 2MODE 1MODE 0
PARAMETER DESCRIPTION
Figure 44. Ultra DMA cycle timings (Initiating Write)
Travelstar 60GH & 40GN hard disk drive specifications
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