HITACHI Deskstar & CinemaStar P7K500 Hard Disk Drive specification (Rev 1.1)
28
5.2.4.3
Host Terminating Read DMA
DSTROBE
HDMARDY-
DMACK-
DMARQ
STOP
tMLI
tRP
DD(15:00)
tZAH
xxxxxxxxxxxxxxxxxx
xxx
Device drives DD
Host drives DD
tCH
tCS
CRC
tLI
tACK
tACK
tRFS
tLI
tIORDYZ
xxx
RD Data
xxxxxxxxxx
tAZ
Figure 11 Ultra DMA cycle timing chart (Host terminating Read)
MODE0
MODE1
MODE2
MODE3
MODE4
MODE5
MODE6
PARAMETER
DESCRIPTION
(all values in ns)
MIN
MAX
MIN
MAX
MIN
MAX
MIN
MAX
MIN
MAX
MIN
MAX
MIN
MAX
tRFS
HDMARDY– to final
DSTROBE time
–
75
–
70
–
60
–
60
–
60
–
50
–
50
tRP
Ready to pause time
160
–
125
–
100
–
100
–
100
–
85
–
85
–
tLI
Limited interlock time
0
150
0
150
0
150
0
100
0
100
0
75
0
60
tAZ
Maximum time allowed for
output drivers to release
–
10
–
10
–
10
–
10
–
10
–
10
–
10
tZAH
Minimum delay time
required for output
20
–
20
–
20
–
20
–
20
–
20
–
20
–
tMLI
Interlocking time with
minimum
20
–
20
–
20
–
20
–
20
–
20
–
20
–
tCS
CRC word setup time (at
device side)
15
–
10
–
7
–
7
–
5
–
5
–
5
–
tCH
CRC word hold time (at
device side)
5
–
5
–
5
–
5
–
5
–
5
–
5
–
tACK
Hold time for DMACK –
20
–
20
–
20
–
20
–
20
–
20
–
20
–
tIORDYZ
Maximum time before
releasing IORDY
–
20
–
20
–
20
–
20
–
20
–
20
–
20
Table 20 Ultra DMA cycle timings (Host terminating Read)
Содержание 3.5-INCH Deskstar HDP725050GLAT80
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