K6602637
Rev.3
02.27.01
- 100 -
Figure 6-17 Device terminating an Ultra DMA Write
DMARQ
(device)
DMACK-
(host)
STOP
(host)
DDMARDY-
(device)
HSTROBE
(host)
DD(15:0)
(host)
DA0, DA1, DA2,
CS0-, CS1-
t
ACK
t
MLI
t
CVS
t
LI
t
LI
t
ACK
CRC
t
CVH
t
ACK
t
IORDYZ
t
MLI
t
RP
t
RFS
Note: The definitions for the STOP, DDMARDY and HSTROBE signal lines are no longer in effect
after DMARQ and DMACK are negated.
Mode 0(ns) Mode 1(ns) Mode 2(ns) Mode 3(ns) Mode 4(ns) Mode5(ns)
Description
SYMBOL MIN MAX MIN MAX MIN MAX MIN MAX MIN MAX MIN MAX
t
CVS
70
48
31
20
6.7
10
CRC word valid setup
time at sender
t
CVH
6.2
6.2
6.2
6.2
6.2
10
CRC word valid hold
time at sender
t
LI
0
150
0
150
0
150
0
100
0
100
0
75
Limited interlock time
t
MLI
20
20
20
20
20
20
Interlock time with
minimum
t
RFS
75
70
60
60
60
50
Ready-to-final-
STROBE time
t
RP
160
125
100
100
100
85
Ready-to-pause time
t
IORDYZ
20
20
20
20
20
20
Maximum time before
releasing IORDY
t
ACK
20
20
20
20
20
20
Setup and hold times
for DMACK_
