IBM IC35L020 - Deskstar 20 GB Hard Drive - 9.1.7.5 Initiating Write DMA

9.1.7.5 Initiating Write DMA
DSTROBE
HDMARDY-
DMACK-
DMARQ
STOP
tUI
tACK
tENV
tZIORDY tLI
tUI
tCYC tCYC
t2CYC
DD00–DD15
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
xxx
xxx
Host drives DD
tDHtDS
WT Data
WT Data WT Data
tACK
(all values are in ns)
–5–5–5–5–5–5Data hold time (at device side)tDH
–4–5–7–7–10–15Data setup time (at device side)tDS
–38–57–86–115–153–2302 Cycle timet2CYC
–17–25–39–54–73–112Cycle timetCYC
75010001000150015001500Limited interlock timetLI
–0–0–0–0–0–0
Wait time before driving
DSTROBE
tZIORDY
502055205520702070207020Envelope timetENV
–20–20–20–20–20–20
Setup time before -DMACK
assertion
tACK
–0–0–0–0–0–0Unlimited interlock timetUI
MAXMIN MAXMIN MAXMIN MAXMIN MAXMIN MAXMIN
Parameter descriptions
MODE5MODE4MODE3MODE2MODE1MODE0
Signal
names
Figure 31. Ultra DMA cycle timings—Initiating Write
Deskstar 60 GXP Hard disk drive specification
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