Host Pausing Read Dma; Table 21: Ultra Dma Cycle Timing Chart (Host Pausing Read); Table 22: Ultra Dma Cycle Timings (Host Pausing Read) - Hitachi HDT725025VLA380 - Deskstar 0A33423 T7K500 250GB SATA 7200RPM 8MB Cache Hard Drive Specifications

6.9.2 Host Pausing Read DMA

Table 21: Ultra DMA cycle timing chart (Host pausing Read)

DMARQ
DMACK-
STOP
HDMARDY-
DSTROBE

Table 22: Ultra DMA cycle timings (Host pausing Read)

PARAMETER
DESCRIPTION
(all values in ns)
tSR DSTROBE to
HDMARDY- time
tRFS HDMARDY- to final
DSTROBE time
Note: When a host does not satisfy tSR timing, it should be ready to receive two more data words after HDMARDY
- is negated.
tSR
MODE 0 MODE 1
MIN MAX MIN MAX MIN MAX MIN MAX MIN MAX MIN MAX MIN MAX
– 50 – 30
– 75 – 70
Deskstar T7K500 Hard Disk Drive Specification
tRFS
MODE 2 MODE 3
– 20 – –
– 60 – 60
33
MODE 4 MODE 5
– – – –
– 60 – 50
MODE 6
– –
– 50