Hitachi DK23BA-20 Owners Manual - Page 102
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Figure 6-10 Host pausing an Ultra DMA Read DMARQ (device) DMACK(host) STOP tRP (host) HDMARDY(host) tRFS DSTROBE (device) DD(15:0) (device) Note: The host asserts STOP to request termination of the Ultra DMA burst no sooner than tRP after HDMARDYis negated. SYMBOL tRFS tRP Mode 0(ns) Mode 1(ns) Mode 2(ns) Mode3(ns) MIN MAX MIN MAX MIN MAX MIN MAX 75 70 60 60 160 125 100 100 Mode4(ns) MIN MAX 60 100 Mode5(ns) Description MIN MAX 50 Ready-to-final STROBE time 85 Ready-to-pause time K6610007 Rev.5 02.14.'03 - 102 -
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K6610007
Rev.5
02.14.’03
- 102 -
Figure 6-10 Host pausing an Ultra DMA Read
DMARQ
(device)
DMACK-
(host)
STOP
(host)
HDMARDY-
(host)
DSTROBE
(device)
DD(15:0)
(device)
t
RFS
t
RP
Note:
The host asserts STOP to request termination of the Ultra DMA burst no sooner than t
RP
after HDMARDY-
is negated.
Mode 0(ns) Mode 1(ns) Mode 2(ns) Mode3(ns) Mode4(ns)
Mode5(ns)
Description
SYMBOL MIN MAX MIN MAX MIN MAX MIN MAX MIN
MAX MIN MAX
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