K6602743
Rev.2
02.12.’02
- 108 -
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Note: The definitions for the STOP, DDMARDY and HSTROBE signal lines are no longer in effect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_
