IBM IC25N020ATDA04 Hard Drive Specifications - Page 74
Device Terminating Write DMA
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7.9.7 Device Terminating Write DMA 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 tRFS DDMARDY- to final HSTROBE time tRP Ready to pause time tLI Limited interlock time tMLI Interlocking time with minimum tCS CRC word setup time at device tCH CRC word hold time at device tACK Hold time for DMACK- tIORDYZ Maximum time before releasing IORDY MODE 0 MODE 1 MODE 2 MODE 3 MODE 4 MODE 5 MIN MAX MIN MAX MIN MAX MIN MAX MIN MAX MIN MAX (ns) (ns) (ns) (ns) (ns) (ns) (ns) (ns) (ns) (ns) (ns) (ns) - 75 - 70 - 60 - 60 - 60 - 50 160 - 125 - 100 - 100 - 100 - 85 - 0 150 0 150 0 150 0 100 0 100 0 75 20 - 20 - 20 - 20 - 20 - 20 - 15 - 10 - 7 - 7 - 5 - 4 - 5 - 5 - 5 - 5 - 5 - 4.6 - 20 - 20 - 20 - 20 - 20 - 20 - - 20 - 20 - 20 - 20 - 20 - 20 Figure 49. Ultra DMA cycle timings (Device Terminating Write) Travelstar 48GH, 30GN & 15GN hard disk drive specifications 60