Hitachi 7K400 Specifications - Page 55
Device Terminating Write DMA
UPC - 000053412935
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6.8.7 Device Terminating Write DMA Table 38: 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 Table 39: Ultra DMA cycle timings (Device terminating Write) tRFS tRP tLI tMLI tCS tCH tACK tIORDYZ PARAMETER DESCRIPTION (all values in ns) DDMARDY- to final HSTROBE time Ready to pause time Limited interlock time Interlocking time with minimum CRC word setup time at device CRC word hold time at device Hold time for DMACK-negation 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 - 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 - 5 - 5-5-5-5-5-5- 20 - 20 - 20 - 20 - 20 - 20 - - 20 - 20 - 20 - 20 - 20 - 20 Deskstar 7K400 Hard Disk Drive Specification 41