slua886-DDR VTT Power Solutions A Competitive Analysis.pdf
slua886文档中提到
Assuming the number of low bit lines is larger than that of high bit lines, the net VTT current goes out of
termination and VTT voltage is lower than VDDQ/2. Based on calculation, to make VIN at high bit line higher
than logic high threshold (VREF + 125 mV = 1.025 V), VTT voltage must be higher than 0.54 V
请问这个VTT的电压必须高于0.54V，是怎么计算的？谢谢指教。
