66AK2G12: DVDD_DDR line for 66AK2G12

Hiroyasu Tazawa1

Part Number: 66AK2G12

Hi,

Let me talk about DVDD_DDR line of 66AK2G12.

My customer is planning to not use DDR.
In this case, I understand 66AK2G12 does not need to connect DVDD_DDR.
This understanding is correct ??

Best Regards
Hiroyasu

over 8 years ago

0 Yordan Kovachev over 8 years ago

TI__Guru**** 161600 points

See the Datasheet:
www.ti.com/.../66ak2g12.pdf

Section 4.5 Connections for Unused Pins clearly states:
"All power balls must be supplied with the voltages specified in Section 5.4, Recommended Operating Conditions, unless otherwise specified in Section 4.3, Signal Descriptions"

There is nothing mentioned in Section 4.3 Signal Descriptions, specifically in Section 4.3.2 DDR EMIF, so you need to connect DVDD_DDR to 1.35V, as stated in 5.4 Recommended Operating Conditions.

See also Section 2.2 Power from the schematic checklist -> www.ti.com/.../sprac54a.pdf

Best Regards,
Yordan

0 Hiroyasu Tazawa1 over 8 years ago in reply to Yordan Kovachev

Guru 12350 points

Hi, Yordan

Thank you for your reply !
I got it,

Best Regards
Hiroyasu

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66AK2G12: DVDD_DDR line for 66AK2G12