7.9.5 Initiating Write DMA
DMARQ
DMACK-
STOP
DDMARDY-
HSTROBE
DD(15:0)
Table 33: Ultra DMA cycle timing (Initiating Write)
PARAMETER
DESCRIPTION
tUI
Unlimited interlock time
tACK
Setup time for DMACK-
tENV
Envelope time
tZIORDY
Minimum time before driv-
ing IORDY
tLI
Limited interlock time
tCYC
Cycle time
t2CYC
Two cycle time
tDS
Data setup time at device
tDH
Data Hold time at device
tUI
tENV
tACK
tZIORDY
tACK
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MODE 0
MIN
MAX
(ns)
(ns)
0
–
20
–
20
70
0
–
0
150
112
–
230
–
15
–
5
–
Travelstar 7K100 Hard Disk Drive Specification
tLI
tUI
WT Data
Host drives DD
MODE 1
MODE 2
MIN
MAX
MIN
MAX
(ns)
(ns)
(ns)
(ns)
0
–
0
–
20
–
20
–
20
70
20
70
0
–
0
–
0
150
0
150
73
–
54
–
154
–
115
–
10
–
7
–
5
–
5
–
47
t2CYC
tCYC
tCYC
tDH
tDS
WT Data
xxx
xxx
WT Data
MODE 3
MODE 4
MIN
MAX
MIN
(ns)
(ns)
(ns)
0
–
0
20
–
20
20
55
20
0
–
0
0
100
0
39
–
25
86
–
57
7
–
5
5
–
5
MODE 5
MAX
MIN
MAX
(ns)
(ns)
(ns)
–
0
–
–
20
–
55
20
55
–
0
–
100
0
75
–
16.8
–
–
38
–
–
4
–
–
4.6
–