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Altera_Forum
Honored Contributor
Honored ContributorarriaII 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 connected to EN of VCCA,VCCA_PLL power supply . Should I observe this rules?4 Replies
Altera_ForumSorry,There is a mistake of sentences, so I rewrite as follows.
Is there a rule of the power supply sequence in ArriaIIGX? In altera arriaIIGX eva. board,VCCA,VCCA_PLL(2.5V) are turned on after VCC,VCC_PLL(0.9V). PGOOD of VCC,VCC_PLL power supply is connected to EN of VCCA,VCCA_PLL power supply . Should I observe this rules?- Altera_Forum
Have u checked Arria II GX pin connection guideline? I believe u can get some info there;)
- Altera_Forum
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. - Altera_Forum
Hi,
You can refer to "Power-On Reset Circuitry" section in the Arria II GX device handbook (https://www.altera.com/content/dam/altera-www/global/en_us/pdfs/literature/hb/arria-ii-gx/aiigx_51012.pdf) for further details on the POP
