除了采用lib文件中默认的min pulse width值check外,我们还可以通过如下SDC命令来设置特殊的约束条件。 set_min_pulse_width -high 2 [get_clocks clk] set_min_pulse_width -low 1 [get_clocks clk] 理想clock buffer/inverter的特性 Equal rise and fall times Less delay variations with PVT and OCV Clock ...
我们来计算下 high pulse width,low pulse width 以及判断是否存在 min pulse width 违例(uncertainty:80ps Reg ck pin requirement min pulse width:0.420ns)。 High pulse width = 0.5 + (0.049-0.056) + (0.034 -0.039) + (0.023-0.026) + (0.042-0.046) + (0.061 – 0.061) + (0.051-0.054) = 0....
我们来计算下high pulse width,low pulse width以及判断是否存在min pulse width违例(uncertainty:80ps Reg ck pin requirement min pulse width:0.420ns)。 最小脉冲宽度 High pulse width = 0.5 + (0.049-0.056) + (0.034 -0.039) + (0.023-0.026) + (0.042-0.046) + (0.061 – 0.061) + (0.051-0.054...
There are 3 register/latch pins with no clock driven by root clock pin: ARM_OE (HIGH) 2. checking constant_clock --- There are 0 register/latch pins with constant_clock. 3. checking pulse_width_clock --- There are 0 register/latch pins which need pulse_width check 4. checking unconst...
High pulse width = 0.5 + (0.049-0.056) + (0.034 -0.039) + (0.023-0.026) + (0.042-0.046) + (0.061 – 0.061) + (0.051-0.054) = 0.478ns Low Pulse width = 0.5 + (0.056 – 0.049) + (0.038 – 0.034) + (0.026 – 0.023) + (0.046 – 0.042) +...
Delay clock pulse-width adjusting circuit for intermediate frequency or high frequencyThe invention discloses a delay clock pulse-width adjusting circuit. The circuit comprises: a power supply; a delay comparator, which one input terminal inputs a sine wave signal and another input terminal inputs ...
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT MICROWIRE INTERFACE TIMING TECS TDCS TCDH TCWH TCWL TCES TEWH LE to Clock Set Up Time Data to Clock Set Up Time Clock to Data Hold Time Clock Pulse Width High Clock Pulse Width Low Clock to LE Set Up Time LE Pulse Width See MICROWIRE Input...
美 英 n.时钟脉冲 网络时钟输入端 英汉 网络释义 n. 1. 时钟脉冲 例句
The conditioned clock pulse is resent through a node to the correction block and leak detector where it is reevaluated. If the pulse is acceptable, it is sent to the clock output. If the pulse is found unacceptable, it is recycled again. A high low clock pulse shuttle determines and ...
The invention discloses a high-resolution digital pulse width modulator based on a double-frequency and multi-phase clock to solve the technical problem that an existing high-resolution digital pulse width modulator is low in resolution. According to the technical scheme, the high-resolution digital...