Hitachi 7K400 Specifications - Page 53
Initiating Write DMA
UPC - 000053412935
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6.8.5 Initiating Write DMA Table 34: 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 Table 35: Ultra DMA cycle timings (Initiating Write) PARAMETER DESCRIPTION (all values in ns) tUI tACK tENV Unlimited interlock time Setup time for DMACKEnvelope time tZIORDY tLI tCYC t2CYC tDS tDH Minimum time before driving IORDY Limited interlock time Cycle time Two cycle time Data setup time at device Data Hold time at device MODE 0 MODE 1 MODE 2 MODE 3 MODE 4 MODE 5 MIN MAX MIN MAX MIN MAX MIN MAX MIN MAX MIN MAX 0-0-0-0-0-0- 20 - 20 - 20 - 20 - 20 - 20 - 20 70 20 70 20 70 20 55 20 55 20 55 0-0-0-0-0-0- 0 150 0 150 0 150 0 100 0 100 0 75 112 - 73 - 54 - 39 - 25 - 16.8 - 230 - 154 - 115 - 86 - 57 - 38 - 15 - 10 - 7 - 7 - 5 - 4 - 5 - 5 - 5 - 5 - 5 - 4.6 - Deskstar 7K400 Hard Disk Drive Specification 39