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Altera_Forum
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11 years ago

arriaII GX power sequence

Is there one every a rule of the power supply sequence in ArriaIIGX? In altera eva. board,VCCA,VCCA_PLL(2.5V) are turned on after VCC,VCC_PLL(0.9V). PGOOD of VCC,VCC_PLL power supply is connecte...
Altera_Forum's avatar
Altera_Forum
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11 years ago

Per my understanding from ArriaIIGX, we can power up or power down the VCCIO, VCC, and VCCPD supplies in any sequence and at any time between them.

However, you must bear in mind that the ArriaII power-on-reset (POR) circuitry generates a POR signal to keep the device in the reset state until the power supply's voltage levels have stabilized during power-up.