About DDR_PHY_ZQ_CON0 register

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About DDR_PHY_ZQ_CON0 register

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goto11
Contributor III

Hello,Community

About DDR_PHY_ZQ_CON0 register in i.MX 7 Dual Applications Processor Reference Manual

How many ohms is Receiver termination for Initial Value = 3'h0 in the ZQ_MODE_TERM field?

Best Regards

Goto

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igorpadykov
NXP Employee
NXP Employee

module is designed in such way that this value is reserved value,

not used for selection. So behavior may be unpredictable.

 

Best regards
igor

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goto11
Contributor III

Hello,

What will Receiver termination behave if I don't change this value?
For example, no termination resistor or indefinite ...?

Best Regards

Goto

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957件の閲覧回数
igorpadykov
NXP Employee
NXP Employee

module is designed in such way that this value is reserved value,

not used for selection. So behavior may be unpredictable.

 

Best regards
igor

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956件の閲覧回数
goto11
Contributor III

Hello,

Why can't I specify the resistance value despite the initial value?

Best Regards

Goto

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956件の閲覧回数
igorpadykov
NXP Employee
NXP Employee

module is designed in such way that this value is reserved value,

not used for selection.

 

Best regards
igor

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956件の閲覧回数
igorpadykov
NXP Employee
NXP Employee

Hi Goto

>How many ohms is Receiver termination for Initial Value = 3'h0 in the ZQ_MODE_TERM field?

this is reserved value not recommended for selection.

Best regards
igor
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