Device Pausing Write Dma; Table 34. Ultra Dma Cycle Timing (Device Pausing Write) - Hitachi 7K100 - Travelstar - Hard Drive Specifications

7.9.6 Device Pausing Write DMA

DMARQ
DMACK-
STOP
DDMARDY-
HSTROBE
Table 34: Ultra DMA cycle timing (Device Pausing Write)
PARAMETER
DESCRIPTION
tSR HSTROBE to DDMARDY-
time
tRFS DDMARDY- to final
HSTROBE time
Note: When a device does not satisfy the tSR timing, the device is ready to receive two more data words after DDMARDY- is
negated.
tSR
tRFS
MODE 0 MODE 1
MIN MAX MIN MAX
(ns) (ns) (ns) (ns)
– 50 – 30
– 75 – 70
Travelstar 7K100 Hard Disk Drive Specification
48
MODE 2 MODE 3
MIN MAX MIN MAX
(ns) (ns) (ns) (ns)
– 20 – –
– 60 – 60
MODE 4 MODE 5
MIN MAX MIN MAX
(ns) (ns) (ns) (ns)
– – – –
– 60 – 50