Hitachi Deskstar 7K250, Технические характеристики

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Deskstar 7K250 Hard Disk Drive Specification
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7.8.3 Host Terminating Read DMA
Figure 6: Ultra DMA cycle timings (Host Terminating Read)
PARAMETER DESCRIPTION
(all values in ns)
MODE 0 MODE 1 MODE 2 MODE 3 MODE 4 MODE 5
MIN MAX MIN MAX MIN MAX MIN MAX MIN MAX MIN MAX
tRFS HDMARDY- to final DSTROBE
time
– 75 – 70 – 60 – 60 – 60 – 50
tRP Ready to pause time 160 – 125 – 100 – 100 – 100 – 85 –
tLI Limited interlock time 0 150 0 150 0 150 0 100 0 100 0 75
tAZ Maximum time allowed for output
drivers to release
– 10 – 10 – 10 – 10 – 10 – 10
tZAH Minimum delay time required for
output
20 – 20 – 20 – 20 – 20 – 20 –
tMLI Interlock time with minimum 20 – 20 – 20 – 20 – 20 – 20 –
tCS CRC word setup time at device 15 – 10 – 7 – 7 – 5 – 5 –
tCH CRC word hold time at device 5 – 5 – 5 – 5 – 5 – 5 –
tACK Hold time for DMACK- 20 – 20 – 20 – 20 – 20 – 20 –
tIORDYZ Maximum time before releasing
IORDY
– 20 – 20 – 20 – 20 – 20 – 20
DSTROBE
HDMARDY-
DMACK-
DMARQ
STOP
tMLI
tRP
DD(15:0)
tZAH
xxxxxxxxxxxxxxxxxx xxx
Device drives DD
Host drives DD
tCH
tCS
CRC
tACK
tACK
tRFS
tLI tIORDYZ
xxx RD Data xxxxxxxxxxx
tAZ
tLI