Device Pausing Write Dma; Table 36. Ultra Dma Cycle Timing Chart (Device Pausing Write); Table 37. Ultra Dma Cycle Timing Chart (Device Pausing Write) - Hitachi 7K400 - Deskstar Hard Drive Specifications

6.8.6 Device Pausing Write DMA

Table 36: Ultra DMA cycle timing chart (Device Pausing Write)
DMARQ
DMACK-
STOP
DDMARDY-
HSTROBE
Table 37: 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 7K400 Hard Disk Drive Specification
40
MODE 2 MODE 3
30 – 20 –
70 – 60 –
MODE 4 MODE 5
– – – –
60 – 60 –
–
50