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Question on VDDS_SRAM OMAP3530

Other Parts Discussed in Thread: OMAP3530

Hello,

 

I have a question on the intended power-up sequence of the VDDS_SRAM rail for the OMAP3530.

 

On page 131 of the SPRS507F document, figure 3-3, it shows that VDDS_SRAM can be ramped up before the SYS_32K starts oscillating.

On page 279 of the SPRUF98G document, figure 4-26, it shows that VDDS_SRAM should be brought up after the SYS_32K is oscillating (and really after the SYS_NRESPWRON is brought high again.)

 

Which one is correct?

 

Thank You,

 

Patrick