Hitachi HDS728080PLAT20 Specifications - Page 52
Device Terminating Write DMA
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6.8.7 Device Terminating Write DMA Table 35: Ultra DMA cycle timing chart (Device Terminating Write) DMARQ DMACKSTOP DDMARDYHSTROBE DD(15:0) tRP tLI tMLI tACK tIORDYZ tRFS tLI tACK tCH tCS xxx WT Data xxxxxxxxxxxxxxxxxxxxxxxxxx CRC xxxxxxxxxx Host drives DD PARAMETER DESCRIPTION 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 (all values in ns) tRFS DDMARDY- to final - 75 - 70 - 60 - 60 - 60 - 50 - 50 HSTROBE time 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 20 - 20 - 20 - 20 - 20 - 20 - 20 - minimum tCS CRC word setup time at 15 - 10 - 7 - 7 - 5 - 5 - 5 - device tCH CRC word hold time at 5 - 5 - 5 - 5 - 5 - 5 - 5- device tACK Hold time for DMACK- 20 - 20 - 20 - 20 - 20 - 20 - 20 - negation tIORDYZ Maximum time before - 20 - 20 - 20 - 20 - 20 - 20 - 20 releasing IORDY Table 36: Ultra DMA cycle timings (Device TerminatingWrite) Deskstar 7K80 Hard Disk Drive Specification 48