Hitachi IC25N040ATMR04-0 Specifications - Page 60
Device Terminating Read DMA
UPC - 407061052632
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7.9.4 Device Terminating Read DMA DMARQ DMACKSTOP HDMARDYDSTROBE DD(15:0) tSS tLI tMLI tACK tLI tACK tLI tIORDYZ tAZ xxxxxx tZAH tCH tCS xxxxxxxxxxxxxxxxxx CRC xxxxxxxxxx Device drives DD Host drives DD Table 31: Ultra DMA cycle timings (Device Terminating Read) tSS tLI tAZ tZAH tMLI tCS tCH tACK tIORDYZ PARAMETER DESCRIPTION Time from DSTROBE edge to negation of DMARQ Limited interlock time Maximum time allowed for output drivers to release Maximum 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 MIN MAX (ns) (ns) 50 - 0 150 - 10 20 - 20 - 15 - 5- 20 - - 20 MODE 1 MIN MAX (ns) (ns) 50 - 0 150 - 10 20 - 20 - 10 - 5- 20 - - 20 MODE 2 MODE 3 MIN MAX MIN MAX (ns) (ns) (ns) (ns) 50 - 50 - 0 150 0 100 - 10 - 10 20 - 20 - 20 - 20 - 7-7- 5-5- 20 - 20 - - 20 - 20 MODE 4 MODE 5 MIN MAX MIN MAX (ns) (ns) (ns) (ns) 50 - 50 - 0 100 0 75 - 10 - 10 20 - 20 - 20 - 20 - 5-4- 5 - 4.6 - 20 - - - - 20 - - Travelstar 80GN Hard Disk Drive Specification 50