问：CLK signal frequency error和required accuracy的区别
时间：10-02
整理：3721RD
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在UTMI的spec在中有这样几句话让我醉了：
2) The CLK signal frequency error must be less than 10% (±6.00 MHz)
3) The CLK must fully meet the required accuracy of ±500 ppm (±30.0 KHz), no later than 1.4ms after the
first transition of CLK.
请问这两点分别是啥?咋看上去像是一个东西呢，但是数值又不一样
2) The CLK signal frequency error must be less than 10% (±6.00 MHz)
3) The CLK must fully meet the required accuracy of ±500 ppm (±30.0 KHz), no later than 1.4ms after the
first transition of CLK.
请问这两点分别是啥?咋看上去像是一个东西呢，但是数值又不一样