Hitachi IC25N080ATMR04-0 Specifications - Page 57
Ultra DMA timings - driver
UPC - 000000114196
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7.9 Ultra DMA timings The Ultra DMA timings meet Mode 0, 1, 2, 3, 4 and 5 of the Ultra DMA Protocol. 7.9.1 Initiating Read DMA DMARQ DMACKSTOP HDMARDYDSTROBE DD(15:0) tUI tACK tENV tACK tENV tZIORDY tAZ xxxxxxxxxxxxxxxxxxxxxxxxxxx Host drives DD t2CYC tFS tCYC tCYC tZAD tDS tDH xxx RD Data xxxx RD Data xxx RD Data Device drives DD Table 28: Ultra DMA cycle timings (Initiating Read) PARAMETER DESCRIPTION MODE 0 MIN MAX (ns) (ns) tUI Unlimited interlock time 0 - tACK Setup time for DMACK- 20 - tENV Envelope time 20 70 tZIORDY Minimum time before driv- 0 - ing IORDY tFS First DSTROBE time 0 230 tCYC Cycle time 112 - t2CYC Two cycle time 230 - tAZ Maximum time allowed for - 10 output drivers to release tZAD Drivers to assert 0 - tDS Data setup time at host 15 - tDH Data hold time at host 5 - MODE 1 MIN MAX (ns) (ns) 0 - 20 - 20 70 0 - 0 200 73 - 154 - - 10 0 - 10 - 5 - MODE 2 MIN MAX (ns) (ns) 0 - 20 - 20 70 0 - 0 170 54 - 115 - - 10 0 - 7 - 5 - MODE 3 MIN MAX (ns) (ns) 0 - 20 - 20 55 0 - 0 130 39 - 86 - - 10 0 - 7 - 5 - MODE 4 MIN MAX (ns) (ns) 0 - 20 - 20 55 0 - 0 120 25 - 57 - - 10 0 - 5 - 5 - MODE 5 MIN MAX (ns) (ns) 0 - 20 - 20 50 0 - 0 90 16.8 - 38 - - 10 0 - 4 - 4.6 - Travelstar 80GN Hard Disk Drive Specification 47