Hitachi IC25N040ATMR04-0 Specifications - Page 58
Host Pausing Read DMA
UPC - 407061052632
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7.9.2 Host Pausing Read DMA DMARQ DMACK- STOP HDMARDYDSTROBE tSR tRFS Table 29: Ultra DMA cycle timings (Host Pausing Read) PARAMETER DESCRIPTION tSR DSTROBE to HDMARDY- time tRFS HDMARDY- to final DSTROBE time MODE 0 MIN MAX (ns) (ns) MODE 1 MIN MAX (ns) (ns) MODE 2 MIN MAX (ns) (ns) MODE 3 MIN MAX (ns) (ns) MODE 4 MIN MAX (ns) (ns) MODE 5 MIN MAX (ns) (ns) - 50 - 30 - 20 - - - - - - - 75 - 70 - 60 - 60 - 60 - 50 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. Travelstar 80GN Hard Disk Drive Specification 48
Travelstar 80GN Hard Disk Drive Specification
48
7.9.2
Host Pausing Read DMA
Table 29: Ultra DMA cycle timings (Host Pausing Read)
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.
PARAMETER
DESCRIPTION
MODE 0
MODE 1
MODE 2
MODE 3
MODE 4
MODE 5
MIN
(ns)
MAX
(ns)
MIN
(ns)
MAX
(ns)
MIN
(ns)
MAX
(ns)
MIN
(ns)
MAX
(ns)
MIN
(ns)
MAX
(ns)
MIN
(ns)
MAX
(ns)
tSR
DSTROBE to
HDMARDY- time
–
50
–
30
–
20
–
–
–
–
–
–
tRFS
HDMARDY- to final
DSTROBE time
–
75
–
70
–
60
–
60
–
60
–
50
DSTROBE
HDMARDY-
DMACK-
DMARQ
tSR
STOP
tRFS