Hitachi DK23EB - Travelstar Series 20 GB Hard Drive Specifications page 104

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.
Mode 0(ns) Mode 1(ns) Mode 2(ns) Mode3(ns)
SYMBOL MIN MAX MIN MAX MIN MAX MIN MAX MIN MAX MIN MAX
t 70
DVS
t 6.2
DVH
t 0 150
LI
t 0
UI
t 20 70
ENV
t 0
ZIORDY
t 20
ACK
t 70
DZFS
K6602743
Rev.2
02.12.'02
Figure 6-13 Initiating an Ultra DMA Write
t
UI
t
t
ACK
ENV
t
ZIORDY
t
ACK
t
ACK
48 31
6.2 6.2
0 150 0 150
0 0
20 70 20 70
0 0
20 20
48 31
t
LI
t
DZFS
t
DVS
Mode4(ns)
20 6.7
6.2 6.2
0 100 0 100
0 0
20 55 20 55
0 0
20 20
20 6.7
- 104 -
t
UI
t
DVH
Mode5(ns) Description
4.8 Data valid setup time at
sender
4.8 Data valid hold time at
sender
0 75 Limited interlock time
0 Unlimited interlock
20 50 Envelope time
0 Minimum time before
driving IORDY
20 Setup and hold times
before assertion and
negation of DMACK_
25 Time from data output
released-to-driving until
the first transition of
critical timing