Deskstar 7K500 and Deskstar E7K500 Hard Disk Drive Specification
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6.8.7 Device Terminating Write DMA
Table 37: Ultra DMA cycle timing chart (Device Terminating Write)
Table 38: Ultra DMA cycle timings (Device terminating Write)
PARAMETER
DESCRIPTION
(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
tRFS DDMARDY- to final HSTROBE time –75–70–60–60–60–50--50
tRP Ready to pause time 160 – 125 – 100 – 100 – 100 – 85 – 85 --
tLI Limited interlock time 0 150 0 150 0 150 0 100 0 100 0 75 0 60
tMLI Interlocking 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-negation 20–20–20–20–20–20–20--
tIORDYZ Maximum time before releasing
IORDY
–20–20–20–20–20–20--20
HSTROBE
DDMARDY-
DMACK-
DMARQ
STOP
tMLI
tRP
DD(15:0)
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Host drives DD
tCH
tCS
CRC
tLI
tACK
tACK
tRFS
tLI
tIORDYZ
xxx WT Data xxxxxxxxxx