7.9.6
Device Pausing Write DMA
DMARQ
DMACK-
STOP
DDMARDY-
HSTROBE
PARAMETER
DESCRIPTION
tSR
HSTROBE to
DDMARDY- time
tRFS
DDMARDY- to
final HSTROBE
time
Figure 12. Ultra DMA cycle timings (Device Pausing Write)
Note: When a device does not satisfy the tSR timing, the device is ready to receive two more data words
after DDMARDY- is negated.
Travelstar 5K160 (PATA) Hard Disk Drive Specification
tSR
MODE0
MODE1
MIN
MAX
MIN
MAX
(ns)
(ns)
(ns)
(ns)
–
50
–
30
–
75
–
70
tRFS
MODE2
MODE3
MIN
MAX
MIN
MAX
(ns)
(ns)
(ns)
(ns)
–
20
–
–
–
60
–
60
50 / 188
MODE4
MODE5
MIN
MAX
MIN
MAX
(ns)
(ns)
(ns)
(ns)
–
–
–
–
–
60
–
50