Host Pausing Read Dma; Table 28. Ultra Dma Cycle Timing Chart (Host Pausing Read); Table 29. Ultra Dma Cycle Timings (Host Pausing Read) - Hitachi 7K400 - Deskstar Hard Drive Specifications

6.8.2 Host Pausing Read DMA

Table 28: Ultra DMA cycle timing chart (Host pausing Read)
DMARQ
DMACK-
STOP
HDMARDY-
DSTROBE
Table 29: Ultra DMA cycle timings (Host pausing Read)
PARAMETER DESCRIPTION
(all values in ns)
DSTROBE to HDMARDY-
tSR
time
HDMARDY- to final
tRFS
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
tRFS
MODE 0 MODE 1
MIN MAX MIN MAX
– 50 – 30
– 75 – 70
Deskstar 7K400 Hard Disk Drive Specification
36
MODE 2 MODE 3
MIN MAX MIN MAX
– 20 – –
– 60 – 60
MODE 4 MODE 5
MIN MAX MIN MAX
– – – –
– 60 – 50