topic Re: PF8100 VDDIO in Power Management https://community.nxp.com/t5/Power-Management/PF8100-VDDIO/m-p/1003021#M743 <HTML><HEAD></HEAD><BODY><P>Hi</P><P>Please read datasheet page16--</P><P>13.1.4 QPU_Off state<BR />The QPU_Off state is a higher power consumption off mode, in which all internal circuitry<BR />required for a power on is biased and ready to start a power up sequence.<BR />If LPM_OFF = 1 and no turn on event is present, the device stops at the QPU_Off state,<BR />and waits until a valid turn on event is present.<BR />In this state, if VDDIO supply is provided externally, the device is able to communicate<BR />through I2C to access and modify the mirror registers in order to operate the device in<BR />TBB mode or to program the OTP registers as described in Section 17 "OTP/TBB and<BR />default configurations".</P></BODY></HTML> Tue, 24 Mar 2020 03:53:18 GMT guoweisun 2020-03-24T03:53:18Z PF8100 VDDIO https://community.nxp.com/t5/Power-Management/PF8100-VDDIO/m-p/1003020#M742 <HTML><HEAD></HEAD><BODY><P>I want to confirm that the PF8100_VDDIO powered by Its own buck，What's the difference ,compared with use external power.<BR /><BR />Thanks.</P></BODY></HTML> Tue, 24 Mar 2020 01:41:04 GMT https://community.nxp.com/t5/Power-Management/PF8100-VDDIO/m-p/1003020#M742 ceng_guanghui 2020-03-24T01:41:04Z Re: PF8100 VDDIO https://community.nxp.com/t5/Power-Management/PF8100-VDDIO/m-p/1003021#M743 <HTML><HEAD></HEAD><BODY><P>Hi</P><P>Please read datasheet page16--</P><P>13.1.4 QPU_Off state<BR />The QPU_Off state is a higher power consumption off mode, in which all internal circuitry<BR />required for a power on is biased and ready to start a power up sequence.<BR />If LPM_OFF = 1 and no turn on event is present, the device stops at the QPU_Off state,<BR />and waits until a valid turn on event is present.<BR />In this state, if VDDIO supply is provided externally, the device is able to communicate<BR />through I2C to access and modify the mirror registers in order to operate the device in<BR />TBB mode or to program the OTP registers as described in Section 17 "OTP/TBB and<BR />default configurations".</P></BODY></HTML> Tue, 24 Mar 2020 03:53:18 GMT https://community.nxp.com/t5/Power-Management/PF8100-VDDIO/m-p/1003021#M743 guoweisun 2020-03-24T03:53:18Z