IBM IC35L040AVVN07-0 Hard Drive Specifications - Page 47
Device Terminating Read DMA
UPC - 683728124212
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6.2.4.4 Device Terminating Read DMA DMARQ DMACKSTOP HDMARDYDSTROBE DD(15:00) tSS tLI tMLI tACK tLI tLI tACK tIORDYZ tAZ xxxxx tZAH tCS tCH xxxxxxxxxxxxxxxxxx CRC xxxxxxxxxx Device drives DD Host drives DD Figure 33. Ultra DMA cycle timing chart (Device terminating Read) tSS tLI tAZ tZAH tMLI tCS tCH 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 Time from DSTROBE edge to negation of DMARQ 50 - 50 - 50 - 50 - 50 - 50 - Limited interlock time 0 150 0 150 0 150 0 100 0 100 0 75 Maximum time allowed for output drivers to release - 10 - 10 - 10 - 10 - 10 - 10 Minimum delay time required for output 20 - 20 - 20 - 20 - 20 - 20 - Interlock time with minimum 20 - 20 - 20 - 20 - 20 - 20 - CRC word setup time (at device side) 15 - 10 - 7 - 7 - 5 - 5 - CRC word hold time (at device side) 5 - 5 - 5 - 5 - 5 - 5 - Hold time after DMACK- 20 - 20 - 20 - 20 - 20 - 20 - Maximum time before releasing IORDY - 20 - 20 - 20 - 20 - 20 - 20 Figure 34. Ultra DMA cycle timings (Device Terminating Read) Deskstar 120GXP hard disk drive specifications 33