IBM IC35L040AVVN07-0 Hard Drive Specifications - Page 46
Host Terminating Read DMA
UPC - 683728124212
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6.2.4.3 Host Terminating Read DMA DMARQ DMACKSTOP HDMARDYDSTROBE DD(15:00) tLI tRP tMLI tACK tRFS tLI tACK tIORDYZ tAZ xxx RD Data xxxxxxxxxxxxxxxxxx tCS tCH xxx CRC xxxxxxxxxx tZAH Device drives DD Host drives DD Figure 31. Ultra DMA cycle timing chart (Host terminating Read) PARAMETER DESCRIPTION MODE0 MODE1 MODE2 MODE3 MODE4 MODE5 (all values in ns) MIN MAX MIN MAX MIN MAX MIN MAX MIN MAX MIN MAX tRFS HDMARDY- to final DSTROBE time - 75 - 70 - 60 - 60 - 60 - 50 tRP Ready to pause time 160 - 125 - 100 - 100 - 100 - 85 - tLI Limited interlock time 0 150 0 150 0 150 0 100 0 100 0 75 tAZ Maximum time allowed for output drivers to release - 10 - 10 - 10 - 10 - 10 - 10 tZAH Minimum delay time required for output 20 - 20 - 20 - 20 - 20 - 20 - tMLI Interlocking time with minimum 20 - 20 - 20 - 20 - 20 - 20 - tCS CRC word setup time (at device side) 15 - 10 - 7 - 7 - 5 - 5 - tCH CRC word hold time (at device side) 5 - 5 - 5 - 5 - 5 - 5 - tACK Hold time for DMACK - 20 - 20 - 20 - 20 - 20 - 20 - tIORDYZ Maximum time before releasing IORDY - 20 - 20 - 20 - 20 - 20 - 20 Figure 32. Ultra DMA cycle timings (Host terminating Read) Deskstar 120GXP hard disk drive specifications 32