Travelstar 4K120 Hard Disk Drive Specification
47
7.9 Ultra DMA timings
The Ultra DMA timings meet Mode 0, 1, 2, 3, 4 and 5 of the Ultra DMA Protocol.
7.9.1 Initiating Read DMA
Table 32: Ultra DMA cycle timings (Initiating Read)
PARAMETER
DESCRIPTION
MODE 0
MODE 1
MODE 2
MODE 3
MODE 4
MODE 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
50
tZIORDY Minimum time before driv-
ing IORDY
0
–
0
–
0
–
0
–
0
–
0
–
tFS
First DSTROBE time
0
230
0
200
0
170
0
130
0
120
0
90
tCYC
Cycle time
112
–
73
–
54
–
39
–
25
–
16.8
–
t2CYC
Two cycle time
230
–
154
–
115
–
86
–
57
–
38
–
tAZ
Maximum time allowed for
output drivers to release
–
10
–
10
–
10
–
10
–
10
–
10
tZAD
Drivers to assert
0
–
0
–
0
–
0
–
0
–
0
–
tDS
Data setup time at host
15
–
10
–
7
–
7
–
5
–
4
–
tDH
Data hold time at host
5
–
5
–
5
–
5
–
5
–
4.6
–
DSTROBE
HDMARDY-
DMACK-
DMARQ
STOP
tUI
tACK
tENV
tACK
tENV
tZIORDY
tFS
tCYC
t2CYC
DD(15:0)
tZAD
tAZ
xxxxxxxxxxxxxxxxxxxxxxxxxxx
xxx
xxxx
xxx
Host drives DD
Device drives DD
tDH
tDS
RD Data
RD Data
RD Data
tCYC
Summary of Contents for HTS421210H9AT00
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Page 20: ...Travelstar 4K120 Hard Disk Drive Specification 6 ...
Page 21: ...Travelstar 4K120 Hard Disk Drive Specification 7 Part 1 Functional specification ...
Page 22: ...Travelstar 4K120 Hard Disk Drive Specification 8 ...
Page 24: ...Travelstar 4K120 Hard Disk Drive Specification 10 ...
Page 38: ...Travelstar 4K120 Hard Disk Drive Specification 24 ...
Page 71: ...Travelstar 4K120 Hard Disk Drive Specification 57 Part 2 Interface specification ...
Page 72: ...Travelstar 4K120 Hard Disk Drive Specification 58 ...
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Page 104: ...Travelstar 4K120 Hard Disk Drive Specification 90 ...
Page 110: ...Travelstar 4K120 Hard Disk Drive Specification 96 ...
Page 200: ...Travelstar 4K120 Hard Disk Drive Specification 186 Table 131 Selective self test log ...
Page 212: ...Travelstar 4K120 Hard Disk Drive Specification 198 ...
Page 224: ...Travelstar 4K120 Hard Disk Drive Specification 210 ...
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