Host Pausing Read Dma; Figure 41. Ultra Dma Cycle Timings (Host Pausing Read) - IBM IC25N040ATCS04 - Travelstar 40 GB Hard Drive Specifications

7.9.2 Host Pausing Read DMA

DMARQ
DMACK-
STOP
HDMARDY-
DSTROBE
PARAMETER DESCRIPTION
tSR DSTROBE to HDMARDY-
time
tRFS HDMARDY- to final
DSTROBE time
Note: When a host does not satisfy the tSR timing, the host should be ready to receive two more data
words after HDMARDY- is negated.

Figure 41. Ultra DMA cycle timings (Host Pausing Read)

tSR
tRFS
MODE 0
MIN MAX
(ns) (ns)
– 50
– 75
Travelstar 60GH & 40GN hard disk drive specifications
MODE 1 MODE 2
MIN MAX MIN MAX
(ns) (ns) (ns) (ns)
– 30 – 20
– 70 – 60
51
MODE 3 MODE 4 MODE 5
MIN MAX MIN MAX MIN
(ns) (ns) (ns) (ns) (ns)
– – – –
– 60 – 60
MAX
(ns)
– –
– 50