IBM DTLA-305040 Hard Drive Specifications - Page 50
Device Terminating Write DMA, HSTROBE, DDMARDY, DMACK, DMARQ, DD15:00, Host drives DD, WT Data
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7.2.4.7 Device Terminating Write DMA DMARQ DMACKSTOP DDMARDYHSTROBE DD(15:00) tRP tLI tMLI tACK tRFS tLI tIORDYZ tACK tDS tDH xxx WT Data xxxxxxxxxxxxxxxxxxxxxxxxxx CRC xxxxxxxxxx Host drives DD Figure 38. Ultra DMA cycle timing chart (Device Terminating Write) tRFS tRP tLI tMLI tDS tDH tACK tIORDYZ PARAMETER DESCRIPTION MODE0 MODE1 MODE2 MODE3 MODE4 MODE5 (all values in ns) MIN MAX MIN MAX MIN MAX MIN MAX MIN MAX MIN MAX Ready to final strobe time - 75 - 70 - 60 - 60 - 60 - 50 Ready to pause time 160 - 125 - 100 - 100 - 100 - 85 - Limited interlock time 0 150 0 150 0 150 0 100 0 100 0 75 Interlocking time 20 - 20 - 20 - 20 - 20 - 20 - Data setup time (at device side) 15 - 10 - 7 - 7 - 5 - 4.0 - Data hold time (at device side) 5 - 5 - 5 - 5 - 5 - 4.6 - Hold time after -DMACK negation 20 - 20 - 20 - 20 - 20 - 20 - Pull-up time before DSTROBE release - 20 - 20 - 20 - 20 - 20 - 20 Figure 39. Ultra DMA cycle timings (Device terminating Write) Deskstar 40GV & 75GXP hard disk drive specifications 38
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