Hitachi HTS542525K9SA00 - 6.9 Ultra DMA timings

Deskstar 7K160 Hard Disk Drive Specification
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6.9 Ultra DMA timings
The Ultra DMA timings meet Mode 0, 1, 2, and 4, 5 and 6 of the Ultra DMA Protocol.
6.9.1 Initiating Read DMA
Table 20: Ultra DMA cycle timings (Initiating Read)
PARAMETER
DESCRIPTION
(all values in ns)
MODE 0 MODE 1 MODE 2 MODE 3 MODE 4 MODE 5 MODE 6
MIN MAX MIN MAX MIN MAX MIN MAX MIN MAX MIN MAX MIN MAX
tUI Unlimited interlock time0–0–000–0–0–0–
tACKSetup time for DMACK-20–20–20–20–20–20–20–
tENV Envelope time 20 70 20 70 20 70 20 55 20 55 20 50 20 50
tZI-
ORDY
Minimum time before
driving IORDY
0–0–0–0–0–0–0–
tFS First DSTROBE time 02300200017001300120– 90 0 80
tCYCCycle time 112–73–54–39–25–17–13–
t2CYC Two cycle time
230–154–115–86–57–38
–
29 –
tAZ Maximum time allowed
for output drivers to
release
–10–10–10–10–10 10 – 10
tZAD Drivers to assert
0–0–0–0–0–0–0 –
tDS Data setup time at host
15–10–7–7–5–4.8–2.6 –
tDH Data hold time at host
5–5–5–5–5–4.8–3.5 –
tDZFS Time from data ouput
released-to-driving until
the first transition of crit-
ical timing
70–48–31–20–6.7–25–17.5 –
DSTROBE
HDMARDY-
DMACK-
DMARQ
STOP
tUI
tACK tENV
tACK tENV
tZIORDY
tFS tCYC
t2CYC
DD(15:0)
tZAD
tAZ
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Host drives DD
Device drives DD
tDH
tDS
RD Data RD Data
RD Data
tCYC