IBM IC25N020ATDA04 Hard Drive Specifications - Page 75
Host Terminating Write DMA, HSTROBE, DDMARDY, DMACK, DMARQ, DD15:0, Host drives DD, tIORDYZ
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7.9.8 Host Terminating Write DMA DMARQ DMACKSTOP DDMARDYHSTROBE DD(15:0) tLI tSS tLI tMLI tIORDYZ tACK tLI tACK tCH tCS xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx CRC xxxxxxxxxx Host drives DD tSS tLI tMLI tCS tCH tACK tIORDYZ PARAMETER DESCRIPTION Time from HSTROBE edge to assertion of STOP Limited interlock time Interlock time with minimum CRC word setup time at device CRC word hold time at device Hold time for DMACKMaximum 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) 50 - 50 - 50 - 50 - 50 - 50 - 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 50. Ultra DMA cycle timings (Host Terminating Write) Travelstar 48GH, 30GN & 15GN hard disk drive specifications 61