IBM Deskstar 120 GXP, Specifications

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6.2.4.2 Host Pausing Read DMA
DSTROBE
HDMARDY-
DMACK-
DMARQ
tSR
STOP
tRFS
Figure 29. Ultra DMA cycle timing chart (Host pausing Read)
50 – 60 – 60 – 60 – 70 – 75 – HDMARDY– to final DSTROBE time tRFS
– – – – – – 20 – 30 – 50 – DSTROBE to HDMARDY– time tSR
MAX MIN MAX MIN MAX MIN MAX MIN MAX MIN MAX MIN
MODE5 MODE4 MODE3 MODE2 MODE1 MODE0
PARAMETER DESCRIPTION
(all values in ns)
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)
Deskstar 120GXP hard disk drive specifications
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