2010年1月22日 — Hi, I am implementing Off-chip driver calibration in the DDR2 memory controller design on Altera Cyclone III EP3C120 board and am struck in ...
OCD is used to adjust the impedance value of the DRAM's internal output driver. This function can adjust the voltage to equalize the pull-up resistance and pull ...
The present invention is an Off Chip Driver (OCD) having a high, a low and a high impedance (Hi-Z) state. The OCD includes an up-level pre-drive, a down-level ...
OCD in Fig. 8 is composed of multiple binary weighted subdrivers to provide controllable driver strength by selectively enabling the subdrivers. The signals DON ...
由 N Raver 著作 · 1987 · 被引用 40 次 — Open-loop gain limitations are described for a novel type of off-chip driver (OCD). This OCD uses feedback to make the output signal track an internal ramp.