Datasheet

Travelstar 80GN Hard Disk Drive Specification
51
7.9.5 Initiating Write DMA
Table 32: Ultra DMA cycle timing (Initiating Write)
PARAMETER DESCRIPTION
MODE 0MODE 1MODE 2MODE 3MODE 4MODE 5
MIN
(ns)
MAX
(ns)
MIN
(ns)
MAX
(ns)
MIN
(ns)
MAX
(ns)
MIN
(ns)
MAX
(ns)
MIN
(ns)
MAX
(ns)
MIN
(ns)
MAX
(ns)
tUI Unlimited interlock time 0–0–0–0–0–0–
tACK Setup time for DMACK- 20–20–20–20–20–20–
tENV Envelope time 20 70 20 70 20 70 20 55 20 55 20 55
tZIORDY Minimum time before driving
IORDY
0–0–0–0–0–0–
tLI Limited interlock time 0 150 0 150 0 150 0 100 0 100 0 75
tCYC Cycle time 112 – 73 – 54 – 39 – 25 – 16.8 –
t2CYC Two cycle time 230 – 154 – 115 – 86 – 57 – 38 –
tDS Data setup time at device 15 – 10 – 7 – 7 – 5 – 4 –
tDH Data Hold time at device 5–5–5–5–5–4.6–
HSTROBE
DDMARDY-
DMACK-
DMARQ
STOP
tUI
tACK
tENV
tZIORDY
tLI
tUI tCYC
t2CYC
DD(15:0)
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Host drives DD
tDH
tDS
WT Data
WT Data
WT Data
tACK
tCYC