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9.1.7.8 Host Terminating Write DMA
HSTROBE
DDMARDY-
DMACK-
DMARQ
STOP
tMLI
tLI
DD00–DD15
Host drives DD
tCH
tCS
CRC
tSS
tACK
tACK
tLI
tIORDYZ
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
xxxxxxxxxx
tLI
(all values are in ns)
20
–
20
–
20
–
20
–
20
–
20
–
Pull-up time before
HSTOROBE release
tIORDYZ
–
20
–
20
–
20
–
20
–
20
–
20
Hold time after -DMACK
negation
tACK
–
5
–
5
–
5
–
5
–
5
–
5
CRC word hold time (at device
side)
tCH
–
4
–
5
–
7
–
7
–
10
–
15
CRC word setup time (at device
side)
tCS
–
20
–
20
–
20
–
20
–
20
–
20
Interlock time
tMLI
75
0
100
0
100
0
150
0
150
0
150
0
Limited interlock time
tLI
–
50
–
50
–
50
–
50
–
50
–
50
Time from strobe to stop
assertion
tSS
MAX
MIN
MAX
MIN
MAX
MIN
MAX
MIN
MAX
MIN
MAX
MIN
Parameter descriptions
MODE5
MODE4
MODE3
MODE2
MODE1
MODE0
Signal
names
Figure 34. Ultra DMA cycle timings—Host terminating Write
Deskstar 60 GXP Hard disk drive specification
39
Содержание IC35L020 - Deskstar 20 GB Hard Drive
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