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Also as second activated Power Domain is the Full-Power Domain. Therefore, the power rail 'DCDCIN' have to be powered up and the Enable-signals 'EN_FPD' (pin J2-102) and 'EN_DDR' (J2-112) have to be asserted (max. voltage 'DCDCIN'). The resulting Power-Good-Signals 'PG_FPD' (pin J2-110) and 'PG_DDR' (J2-114) will go high after the voltages of the Programmable Logic Full-Power Domain are properly powered up. In the following, the PSGT voltages (see figure 3) can be powered up by asserting the Enable-signal 'EN_PSGT' (pin J2-84, max. voltage 'DCDCIN'). The resulting Power-Good-Signal 'PG_PSGT' (pin J2-82) needs an extern pull-up (max. 6V).
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The supply voltages for the MGT units of the MPSoC will be powered up last. Therefore, the power rail 'GT_DCDC' have to be powered up and the Enable-signals 'EN_GT_R' (pin J2-95), 'EN_GT_L' (pin J2-79) and 'EN_PLL_PWR' (J2-77, 7V max.) have to be asserted (max. voltage 'GT_DCDC'). The resulting Power-Good-Signals 'PG_GT_R' (pin J2-91), 'PG_GT_L' (pin J2-97) and 'PG_PLL_1V8' (J2-80) will go high after the supply voltages of the Programmable Logic Domain MGT units are properly powered up. The three Power-Good-Signals need an extern pull-up (max. 6V).
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The voltages 'LP_DCDC' and 'LP_0V85' are monitored by a the voltage monitor circuit U41, which generates the POR_B signal at Power-On. A manual reset is also possible the driving the MR-pin (J2-83) to GND. Leave this pin unconnected or connect to VDD (LP_DCDC) when unused.
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