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DISK DRIVE OPERATION
SpinPoint V40 Product Manual
102
6.7.4.7 Initiating an Ultra DMA data out burst
The values for the timings for each of the Ultra DMA modes are contained in 6.7.4.2.
DMARQ
(device)
DMACK-
(host)
STOP
(host)
DDMARDY-
(device)
HSTROBE
(host)
DD(15:0)
(host)
DA0, DA1, DA2,
CS0-, CS1-
t
UI
t
ACK
t
ENV
t
ZIORDY
t
LI
t
DVS
t
DVH
t
ACK
t
ACK
t
UI
NOTE − The definitions for the STOP, DDMARDY and HSTROBE signal lines are not in
effect until DMARQ and DMACK are asserted.
Figure 6-9 Initiating an Ultra DMA data out burst