Deskstar 7K400 Hard Disk Drive Specification
42
6.8.8 Host Terminating Write DMA
Table 40: Ultra DMA cycle timing chart (Host Terminating Write)
Table 41: Ultra DMA cycle timings (Host Terminating Write)
PARAMETER
DESCRIPTION
(all values in ns)
MODE 0
MODE 1
MODE 2
MODE 3
MODE 4
MODE 5
MIN MAX
MIN MAX
MIN MAX
MIN MAX
MIN MAX
MIN MAX
tSS
Time from HSTROBE edge to
assertion of STOP
50
–
50
–
50
–
50
–
50
–
50
–
tLI
Limited interlock time
0
150
0
150
0
150
0
100
0
100
0
75
tMLI
Interlock time with minimum
20
–
20
–
20
–
20
–
20
–
20
–
tCS
CRC word setup time at device
15
–
10
–
7
–
7
–
5
–
5
–
tCH
CRC word hold time at device
5
–
5
–
5
–
5
–
5
–
5
–
tACK
Hold time for DMACK-
20
–
20
–
20
–
20
–
20
–
20
–
tIORDYZ
Maximum time before releasing
IORDY
–
20
–
20
–
20
–
20
–
20
–
20
HSTROBE
DDMARDY-
DMACK-
DMARQ
STOP
tMLI
DD(15:0)
Host drives DD
tCH
tCS
CRC
tSS
tACK
tACK
tLI
tIORDYZ
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
xxxxxxxxxx
tLI
tLI
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