9.1.7.2 Host Pausing Read DMA
DSTROBE
HDMARDY-
DMACK-
DMARQ
tSR
STOP
tRFS
(all values are in ns)
50
–
60
–
60
–
60
–
70
–
75
–
Ready to final strobe time
tRFS
–
–
–
–
–
–
20
–
30
–
50
–
Strobe to ready response time
tSR
MAX
MIN
MAX
MIN
MAX
MIN
MAX
MIN
MAX
MIN
MAX
MIN
Parameter descriptions
MODE5
MODE4
MODE3
MODE2
MODE1
MODE0
Signal
names
Note: When a host does not meet tSR, it should be ready to receive 2 (mode 0, 1 and 2) or 3 (mode 3, 4,
and 5) more strobes after HDMARDY– is negated.
Figure 28. Ultra DMA cycle timings (Host pausing Read)
Deskstar 60 GXP Hard disk drive specification
33
Содержание IC35L020 - Deskstar 20 GB Hard Drive
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