[SI-LIST] Power Integrity about Vtt of DDR

Dear all:
In DDR, there are two power, VDD and VTT. For example, VDD=2.5V and VTT=1.25V. 
VDD should be decoupled very well. How about the decoupling of VTT? Is it 
important? How to arrange the VDD, VTT and GND?

Best Regards

Zhangkun
2004.5.14


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