IBM DJSA-210 Hard Drive Specifications - Page 65
Host Terminating Read DMA, DSTROBE, HDMARDY, DMACK, DMARQ, DD15:0, Device drives DD, Host drives DD
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7.9.1 Host Terminating Read DMA DMARQ DMACKSTOP tLI tRP tMLI tACK tACK HDMARDYDSTROBE DD(15:0) tRFS tLI tIORDYZ tAZ xxx RD Data xxxxxxxxxxxxxxxxxx tDH tDS xxx CRC xxxxxxxxxxx tZAH Device drives DD Host drives DD 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 DMACKMaximum time before releasing IORDY MODE 0 MODE 1 MODE 2 MODE 3 MODE 4 MIN MAX MIN MAX MIN MAX MIN MAX MIN MAX (ns) (ns) (ns) (ns) (ns) (ns) (ns) (ns) (ns) (ns) - 75 - 70 - 60 - 60 - 60 160 - 125 - 100 - 100 - 100 - 0 150 0 150 0 150 0 100 0 100 - 10 - 10 - 10 - 10 - 10 20 - 20 - 20 - 20 - 20 - 20 - 20 - 20 - 20 - 20 - 15 - 10 - 7 - 7 - 5 - 5-5-5-5-5- 20 - 20 - 20 - 20 - 20 - - 20 - 20 - 20 - 20 - 20 Figure 40. Ultra DMA cycle timing (Host Terminating Read) Travelstar 32GH/30GT/20GN hard disk drive specifications 51