AM2754-Q1: how use 3V3 OSPI

Xingyu Zhu

Part Number: AM2754-Q1

Tool/software:

Hi expert,

In the default EVM, we are using 1.8V OSPI, but our customer wants to use 3.3V OSPI, what HW change that is needed to be done? My guess is:

1. Change VDDSHV1 from SoC_DVDD1V8 to SoC_DVDD3V3;

2. Change all the VCC1V8_SYS to VCC3V3_SYS;

Please help to check. Thanks

Best Regards,

Xingyu Zhu

5 months ago

0 Erik Friedel 5 months ago

TI__Expert 7035 points

Xingyu Zhu,

There is not a way to support 3.3V OSPI with the EVM design.

You are correct that a new design with VDDSVH tied to 3.3V supply would enable a 3.3V IO OSPI device. However, the other IO in the VDDSVH1 will also be 3.3V IO. Please consider the impact of all IO being 3.3V.

Regards,

Erik

0 Xingyu Zhu 5 months ago in reply to Erik Friedel

TI__Expert 4335 points

Hi Erik,

Thanks for your reply. Customer is designing their own HW.

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AM2754-Q1: how use 3V3 OSPI