S10 Device Pin status - S10 Device Pin status MSEL1 and MSEL2 are both external 4.7K resistor pull-downs, but measured as 1.8, look at s10 pcg doc, there is an internal 25K pull-up, according to my understanding should be between 1.8 and 0。 IO_AUX_RREF external 2.8K pull-down, RREF_SDM external 2K pull-down, but the test is about 500mv, this is normal? Or the wrong design. Replies: Re: S10 Device Pin status Hi Guo DeXin, Perhaps you will need to check your board signal integrity. In S10, pin connection guidelines, it is recommended to route in a way that no aggresor on this. More over, it is a reference resistor pin, is a input pin instead. Thank You. Replies: Re: S10 Device Pin status is there someone to help me ? Replies: Re: S10 Device Pin status Yes,The pin IO_AUX_RREF and RREF_SDM , the voltage is 500mV and this is abnormal? Replies: Re: S10 Device Pin status Hi DeXin, Apologize i dont really understand the question. Are you saying that the output voltage observed with external 2.8K pull down, the voltage is 500mV and this is abnormal? Thank You Replies: Re: S10 Device Pin status upload image about IO_AUX_RREF and RREF_SDM Tks for your help!