Hitachi Deskstar T7K500, Технические характеристики

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Deskstar T7K500 Hard Disk Drive Specification
35
6.9.4 Device Terminating Read DMA
Table 25: Ultra DMA cycle timing chart (Host pausing Read)
Table 26: Ultra DMA cycle timings (Device Terminating Read)
PARAMETER DESCRIP-
TION
(all values in ns)
MODE 0 MODE 1 MODE 2 MODE 3 MODE 4 MODE 5 MODE 6
MIN MAX MIN MAX MIN MAX MIN MAX MIN MAX MIN MAX MIN MAX
tSS Time from DSTROBE edge
to negation of DMARQ 50 – 50 – 50 – 50 – 50 – 50 – 50 –
tLI Limited interlock time 0 150 0 150 0 150 0 100 0 100 0 75 0 60
tAZ Maximum time allowed for
output drivers to release – 10 – 10 – 10 – 10 – 10 – 10 – 10
tZAH Maximum delay time
required for output 20 – 20 – 20 – 20 – 20 – 20 – 20 –
tMLI Interlock time with minimum 20 – 20 – 20 – 20 – 20 – 20 – 20 –
tCS CRC word setup time at
device 15 – 10 – 7 – 7 – 5 – 5 – 5 –
tCH CRC word hold time at
device 5 – 5 – 5 – 5 – 5 – 5 – 5 –
tACK Hold time for DMACK- 20 – 20 – 20 – 20 – 20 – 20 – 20 –
tIORDYZ Maximum time before
releasing IORDY
– 20 – 20 – 20 – 20 – 20 – 20 – 20
DSTROBE
HDMARDY-
DMACK-
DMARQ
STOP
tMLI
DD(15:0)
tZAH
xxxxxxxxxxxxxxxxxx
Device drives DD
Host drives DD
tCH
tCS
CRC
tACK
tACK
tLI
tIORDYZ
xxxxxx xxxxxxxxxx
tSS
tLI
tLI
tAZ