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发表于 2011-9-30 12:24:49
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楼主好:
我也在用ncx做lib。我是想把一个新做的触发器放到原来的库中,但是用ncx跑完后,发现所测量到的功耗power有负值。如下:
internal_power () {
rise_power ("power_inputs_1") {
index_1("0.018000, 0.032000, 0.060000, 0.108000, 0.198000, 0.362000, 0.660000");
values("-0.000392, -0.000395, -0.000398, -0.000399, -0.000400, -0.000400, -0.000399");
pin (Q) {
direction : "output";
function : "IQ";
max_capacitance : 0.099487;
related_power_pin : "VDD";
related_ground_pin : "VSS";
internal_power () {
related_pin : "CK";
rise_power ("power_outputs_1") {
index_1("0.018, 0.032, 0.06, 0.108, 0.198, 0.362, 0.66");
index_2("0.000582, 0.001372, 0.003232, 0.007613, 0.017931, 0.042237, 0.099487");
values("0.003911, 0.003673, 0.003003, 0.001269, -0.002917, -0.012673, -0.036331", \
"0.003686, 0.003439, 0.002750, 0.000994, -0.003160, -0.013116, -0.036176", \
"0.003256, 0.003008, 0.002315, 0.000564, -0.003602, -0.013529, -0.036884", \
"0.002681, 0.002419, 0.001705, -3.300000e-05, -0.004177, -0.013990, -0.037518", \
"0.001774, 0.001501, 0.000802, -0.000951, -0.005157, -0.015067, -0.038780", \
"-0.001366, -0.001370, -0.001380, -0.002450, -0.006665, -0.016513, -0.040509", \
"-0.007770, -0.007777, -0.007774, -0.007785, -0.008961, -0.018986, -0.042469");
}
最让我崩溃的是有的表格中,功耗一会儿正,一会负。不知道楼主在做这个工作的时候遇没遇到这种问题。小弟不胜感谢! |
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