Hitachi C4K60 Specifications - Page 140
Device pausing an Ultra DMA Write
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Figure 8.11 Device pausing an Ultra DMA Write tRP DMARQ (device) DMACK(host) STOP (host) DDMARDY(device) tRFS HSTROBE (host) DD(15:0) (host) Note: The device negates DMARQ to request termination of the Ultra DMA burst no sooner than tRP after DDMARDY- is negated. SYMBOL tRFS tRP Mode 0(ns) Mode 1(ns) Mode 2(ns) MIN MAX MIN MAX MIN MAX 75 70 60 160 125 100 Mode 3(ns) MIN MAX 60 100 Mode 4(ns) Mde5(ns) Description MIN MAX MIN MAX 60 50 Ready-to-final STROBE time 100 85 Ready-to-pause time K6610170 Rev.2 Dec 22, 2004 - 140 -
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K6610170
Rev.2
Dec 22, 2004
- 140 -
Figure 8.11 Device pausing an Ultra DMA Write
DMARQ
(device)
DMACK-
(host)
STOP
(host)
DDMARDY-
(device)
HSTROBE
(host)
DD(15:0)
(host)
t
RFS
t
RP
Note: The device negates DMARQ to request termination of the Ultra DMA burst no sooner than t
RP
after
DDMARDY- is negated.
Mode 0(ns) Mode 1(ns) Mode 2(ns) Mode 3(ns) Mode 4(ns) Mde5(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