IBM DJSA-210 - Travelstar 10 GB Hard Drive - 7.9 Ultra DMA Timings; 7.9.1 Initiating Read DMA

7.9 Ultra DMA timings
The Ultra DMA timings meet Mode 0, 1, 2, 3, and 4 of the Ultra DMA Protocol.
7.9.1
Initiating Read DMA
DSTROBE
HDMARDY-
DMACK-
DMARQ
STOP
tUI
tACK tENV
tACK tENV
tZIORDY
tFS tCYC
t2CYC
DD(15:0)
tZAD
tAZ
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xxx xxxx xxx
Host drives DD
Device drives DD
tDH
tDS
RD Data RD Data
RD Data
tCYC
–5–5–5–5–5Data hold time at hosttDH
–5–7–7–10–15Data setup time at hosttDS
–0–0–0–0–0Drivers to asserttZAD
10–10–10–10–10–Maximum time allowed for output drivers
to release
tAZ
–57–86–115–154–230Two cycle timet2CYC
–25–39–54–73–112Cycle timetCYC
12001300170020002300First DSTROBE timetFS
–0–0–0–0–0Minimum time before driving IORDYtZIORDY
55205520702070207020Envelope timetENV
–20–20–20–20–20Setup time for DMACK-tACK
–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)
MODE 4MODE 3MODE 2MODE 1MODE 0
PARAMETER DESCRIPTION
Figure 38. Ultra DMA cycle timing
(Initiating Read)
Travelstar 32GH/30GT/20GN hard disk drive specifications
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