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7.9.2 Host Pausing Read DMA
DSTROBE
HDMARDY-
DMACK-
DMARQ
tSR
STOP
tRFS
50
–
60
–
60
–
60
–
70
–
75
–
HDMARDY- to final
DSTROBE time
tRFS
–
–
–
–
–
–
20
–
30
–
50
–
DSTROBE to HDMARDY-
time
tSR
MAX
(ns)
MIN
(ns)
MAX
(ns)
MIN
(ns)
MAX
(ns)
MIN
(ns)
MAX
(ns)
MIN
(ns)
MAX
(ns)
MIN
(ns)
MAX
(ns)
MIN
(ns)
MODE 5
MODE 4
MODE 3
MODE 2
MODE 1
MODE 0
PARAMETER DESCRIPTION
Note: When a host does not satisfy the tSR timing, the host should be ready to receive two more data
words after HDMARDY- is negated.
Figure 41. Ultra DMA cycle timings (Host Pausing Read)
Travelstar 60GH & 40GN hard disk drive specifications
51
Содержание IC25N040ATCS04 - Travelstar 40 GB Hard Drive
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