Hitachi 7K100 Hard Drive Specifications - Page 59
Host Terminating Read DMA
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7.9.3 Host Terminating Read DMA DMARQ DMACK- tLI tRP tMLI tACK STOP tACK HDMARDYDSTROBE DD(15:0) tRFS tLI tIORDYZ tDH tAZ tDS xxx RD Data xxxxxxxxxxxxxxxxxx xxx CRC xxxxxxxxxx tZAH Device drives DD Host drives DD Table 31: Ultra DMA cycle timings (Host Terminating Read) tRFS tRP tLI tAZ tZAH tMLI tDS tDH tACK tIORDYZ PARAMETER DESCRIPTION HDMARDY- to final DSTROBE time Ready to pause time Limited interlock time Maximum time allowed for output drivers to release Minimum delay time required for output Interlock time with minimum CRC word setup time at device CRC word hold time at device Hold time for DMACKnegation Maximum time before releasing IORDY MODE 0 MIN MAX (ns) (ns) - 75 160 - 0 150 - 10 20 - 20 - 15 - 5 - 20 - - 20 MODE 1 MIN MAX (ns) (ns) - 70 125 - 0 150 - 10 20 - 20 - 10 - 5 - 20 - - 20 MODE 2 MIN MAX (ns) (ns) - 60 100 - 0 150 - 10 20 - 20 - 7 - 5 - 20 - - 20 MODE 3 MIN MAX (ns) (ns) - 60 100 - 0 100 - 10 20 - 20 - 7 - 5 - 20 - - 20 MODE 4 MIN MAX (ns) (ns) - 60 100 - 0 100 - 10 20 - 20 - 5 - 5 - 20 - - 20 MODE 5 MIN MAX (ns) (ns) - 50 85 - 0 75 - 10 20 - 20 - 4 - 4.6 - 20 - - 20 Travelstar 7K100 Hard Disk Drive Specification 45