DISK DRIVE OPERATION
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-
NOTE − The definitions for the STOP, DDMARDY and HSTROBE signal lines are not in
effect until DMARQ and DMACK are asserted.
102
t
UI
t
t
ACK
ENV
t
ZIORDY
t
ACK
t
ACK
Figure 6-9 Initiating an Ultra DMA data out burst
t
t
LI
UI
t
DVS
SpinPoint V40 Product Manual
t
DVH