IBM DBCA-204860 Hard Drive Specifications - Page 54
Initiating Write DMA
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6.5.3.5 Initiating Write DMA DMARQ < Tui > DMACK STOP Tzrdy > < < Tli > HDMARDY < T2cyc > Tui < > < Tcyc > < Tcyc > HSTROBE Tds < > < > Tdh DD(15:00) XXXXXXXXXXXXXXXXXXXXXXXXXX WT Data XXX WT Data XXX WT Data < Host drives DD > PARAMETER DESCRIPTION Tui Tack Tenv Tzrdy Tli Tcyc T2cyc Tds Tdh Unlimited interlock time Setup time before DMACK assertion Envelope time Wait time before driving DDMARDY Limited interlock time Cycle Time 2 Cycle time Data setup time (at device side) Data Hold time (at device side) Figure 32. Ultra D M A cycle timings (Initiating Write) [nsec] MODE0 MODE1 MODE2 MIN MAX MIN MAX MIN MAX 0 0 0 20 20 20 20 70 20 70 20 70 0 0 0 0 150 0 150 0 150 114 75 55 235 156 117 15 10 7 5 5 5 46 OEM Specifications of DBCA-2xxxxx 2.5 inch H D D