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Device Pausing Write Dma; Table 28.Ultra Dma Cycle Timing Chart (Device Pausing Write); Table 29.Ultra Dma Cycle Timing Chart (Device Pausing Write) - Hitachi T7K250 - Deskstar - Hard Drive Specifications

3.5 inch ultra ata/133 hard disk drive, 3.5 inch serial ata hard disk drive
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6.10.6 Device Pausing Write DMA

Table 28: Ultra DMA cycle timing chart (Device Pausing Write)
DMARQ
DMACK-
STOP
DDMARDY-
HSTROBE
Table 29: Ultra DMA cycle timing chart (Device Pausing Write)
PARAMETER
DESCRIPTION
(all values in ns)
tSR
HSTROBE to DDMARDY- time
tRFS
DDMARDY- to final HSTROBE time
Note: When a device does not satisfy the tSR timing, it shall be ready to receive two more strobes after
DDMARDY– is negated.
tSR
tRFS
MODE 0
MODE 1
MIN MAX MIN MAX MIN MAX MIN MAX MIN MAX MIN MAX
–
50
–
–
75
–
Deskstar T7K250 Hard Disk Drive Specification
40
MODE 2
MODE 3
30
–
20
–
70
–
60
–
MODE 4
MODE 5
–
–
–
–
60
–
60
–
–
50
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