IBM IC25N040ATCS04 - Travelstar 40 GB Hard Drive - 7.9.2 Host Pausing Read DMA

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 5MODE 4MODE 3MODE 2MODE 1MODE 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
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