About DDR_PHY_ZQ_CON0 register

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About DDR_PHY_ZQ_CON0 register

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756 次查看
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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634 次查看
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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634 次查看
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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635 次查看
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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634 次查看
goto11
Contributor III

Hello,

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

Best Regards

Goto

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634 次查看
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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634 次查看
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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