AM62X-PET-CALC: VPP power rail query

Jingcheng ye

Part Number: AM62X-PET-CALC

Hi TI Expert

As the snapshot show (Sprad06, chapter 2.7), the vpp power rail seens must enable for LPDDR4 used, if yes it may conflict with VPP power rail defination in AM62x Datasheet.

BR Jingcheng

over 1 year ago

0 JJD over 1 year ago

TI__Guru 69170 points

These are two separate supply rails. One is describing the VPP supply rail for the DDR4 memory. The other is the AM62x VPP supply rail for programming efuses.

Regards,

James

0 Jingcheng ye over 1 year ago in reply to JJD

Intellectual 560 points

Hi James

Can you help figure out which power rail named VPP in DDR4?

I can't find any power rail which is named VPP in LPDDR4 and AM62x_DDR4 port side.

BR Jingcheng

0 Kallikuppa Sreenivasa over 1 year ago in reply to Jingcheng ye

TI__Guru** 124058 points

Hello Jingcheng

On the SoC side, you will only see the VPP supply used for eFuse.

The VPP for the DDR is on the device.

Pls Refer the EVM schematics.

https://www.ti.com/tool/SK-AM62

Regards,

Sreenivasa

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AM62X-PET-CALC: VPP power rail query