Hitachi C4K60 Specifications - Page 135
Host pausing an Ultra DMA Read
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DMARQ (device) DMACK(host) STOP (host) Figure 8.6 Host pausing an Ultra DMA Read tRP 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 K6610170 Rev.2 Dec 22, 2004 - 135 -
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K6610170
Rev.2
Dec 22, 2004
- 135 -
Figure 8.6 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