IBM IC35L020 Hard Drive Specifications - Page 49
Device Terminating Read DMA, DSTROBE, HDMARDY, DMACK, DMARQ, DD00-DD15, Host drives DD
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9.1.7.4 Device Terminating Read DMA DMARQ DMACKSTOP HDMARDYDSTROBE DD00-DD15 tSS tMLI tLI tACK tLI tLI tACK tIORDYZ tAZ xxxxx Tzah tCS tCH xxxxxxxxxxxxxxxxxx CRC xxxxxxxxxx Host drives DD Device drives DD Signal names tSS tLI tAZ tZAH tMLI tCS tCH tACK tIORDYZ MODE0 MODE1 MODE2 MODE3 MODE4 MODE5 Parameter descriptions MIN MAX MIN MAX MIN MAX MIN MAX MIN MAX MIN MAX Time from strobe to stop assertion 50 - 50 - 50 - 50 - 50 - 50 - Limited interlock time Output release time Output enable time Interlocking time 0 150 0 150 0 150 0 100 0 100 0 75 - 10 - 10 - 10 - 10 - 10 - 10 20 - 20 - 20 - 20 - 20 - 20 - 20 - 20 - 20 - 20 - 20 - 20 - CRC sord 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 negation 20 - 20 - 20 - 20 - 20 - 20 - Pull-up time before DSTROBE release - 20 - 20 - 20 - 20 - 20 - 20 (all values are in ns) Figure 30. Ultra DMA cycle timings-Device Terminating Read Deskstar 60 GXP Hard disk drive specification 35