Hitachi HDT725025VLA380 Specifications - Page 50
Initiating Write DMA
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6.9.5 Initiating Write DMA Table 27: Ultra DMA cycle timing chart (Initiating Write) DMARQ tUI DMACKSTOP tENV tACK tLI tZIORDY DDMARDY- tACK tUI t2CYC tCYC tCYC HSTROBE DD(15:0) xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx tDH tDS WT Data xxx WT Data xxx WT Data Host drives DD PARAMETER DESCRIPTION MODE 0 MODE 1 MODE 2 MODE 3 MODE 4 MODE 5 MODE 6 MIN MAX MIN MAX MIN MAX MIN MAX MIN MAX MIN MAX MIN MAX (all values in ns) tUI Unlimited interlock time 0 - 0 - 0 - 0 - 0 - 0 - 0 - tACK Setup time for DMACK- 20 - 20 - 20 - 20 - 20 - 20 - 20 - tENV Envelope time 20 70 20 70 20 70 20 55 20 55 20 55 20 50 tZIORDY Minimum time before 0-0-0-0-0-0 - 0 - driving IORDY tLI Limited interlock time 0 150 0 150 0 150 0 100 0 100 0 75 0 60 tCYC Cycle time 112 - 73 - 54 - 39 - 25 - 16.8 - 13.0 - t2CYC Two cycle time 230 - 154 - 115 - 86 - 57 - 38 - 29 - tDS Data setup time at 15 - 10 - 7 - 7 - 5 - 4 - 2.6 - device tDH Data Hold time at device 5 - 5 - 5 - 5 - 5 - 4.6 - 3.5 - Deskstar T7K500 Hard Disk Drive Specification 36