Ultra Dma Data Transfer - Fujitsu MHS2030AT - 2.5" Notebook 30GB Drive Product Manual

5.6.3 Ultra DMA data transfer

Figures 5.11 through 5.20 define the timings associated with all phases of Ultra
DMA bursts.
Table 5.18 contains the values for the timings for each of the Ultra DMA Modes.
5.6.3.1 Initiating an Ultra DMA data in burst
5.6.3.2 contains the values for the timings for each of the Ultra DMA Modes.
DMARQ
(device)
DMACK-
(host)
STOP
(host)
HDMARDY-
(host)
DSTROBE
(device)
DD (15:0)
DA0,DA1,DA2,
CS0-,CS1-
Note:
The definitions for the STOP, HDMARDY-and DSTROBE signal lines are
not in effect until DMARQ and DMACK- are asserted.
Figure 5.11 Initiating an Ultra DMA data in burst
C141-E171-03EN
t
UI
t
t
ACK
ENV
t
ACK t
ENV
t
ZIORDY
t
AZ
t
ACK
5.5 Ultra DMA Feature Set
t
FS
t
ZAD
t
FS
t
ZAD
t
ZFS
t
DZFS
t
VDS
t
DVH
5-129