Hibernate mode activation automatically changes state of the HIB_IO_0 output to high impedance which allow the external pull up resistor to drive high value of the External Voltage Regulator in order to switch off VDDP generation. See the corresponding sections in the 4200 reference manualĪfter power up and before entering Hibernate mode the HIB_IO_0 needs to be reconfigured to bidirectional (but still open-drain driver) mode. Open DRAM Timing Configuration (or it’s equivalent). Note that different motherboard manufacturers might have this setting located elsewhere. Use the Recommended (Rec.) field from the calculator. ![]() As a result, VDDP voltage in mV can approach but not exceed your DRAM Voltage. Set SOC, VDDG (CCD, IOD) and VDDP Voltage. CLD0 VDDP Voltage Control AMD Overclocking Setup VDDP is a voltage for the DDR4 bus signaling (PHY), and it is derived from your DRAM Voltage (VDDIOMem). How can I achieve the same result with these characteristics: external voltage regulator with enable active high, and an external wake up trigger (i.e. Set DRAM Voltage as calculated from the DRAM Ryzen calculator. ![]() Kindly check the HDCR Hibernate Domain Control Register,HIBIO0POL and HIBIO1POL control the output polarity of the HIBIO0 and output polarity of the HIBIO1 respectively.Ģ.XMC4200 (I know it isn’t the right topic, but I hope you can still answer) – Has a single pin HIB_IO (HIB_IO_0). XMC4800 – How can I achieve what you described using an external voltage regulator with enable active high?
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