Figure 29. Ultra Dma Cycle Timing Chart (Host Pausing Read); Figure 30. Ultra Dma Cycle Timings (Host Pausing Read); Host Pausing Read Dma - Hitachi ic35l060avv207-0 - Deskstar 60 GB Hard Drive Specifications

6.2.4.2 Host Pausing Read DMA

DMARQ
DMACK-
STOP
HDMARDY-
DSTROBE

Figure 29. Ultra DMA cycle timing chart (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.

Figure 30. Ultra DMA cycle timings (Host pausing Read)

tSR
tRFS
MODE0
MIN MAX
– 50
– 75
Deskstar 180GXP hard disk drive specifications
31
MODE1 MODE2 MODE3
MIN MAX MIN MAX MIN
– 30 – 20 –
– 70 – 60 –
MODE4 MODE5
MAX MIN MAX MIN MAX
– – – –
60 – 60 – 50
–