Dear Robert
I finished the part of DDRM 3 with MAX53 please cheek and tell me what is wrong?and please answer this questions
1. how to calculate number of decoupling capacitor for DDRM
2. For DDR-VREF
1. power supply for voltage divider is 1.5V in Micron reference (TN-46-14)but in i.MX53 System Development
User’s Guide is NVCC_EMI_DRAM what is correct ?
2. Can I put his voltage divider for each DDRM IC or place one Voltage divider for the Max53? And why?
3. why all ports for each data and control swapped in i.MX53 System Development User’s Guide.
4. Which Stack-up is prefer from I.MX53 system Development User's guide or Micron reference? and why difference between them ?
5. How do we calculate number of Layer Need in my PCB's?
6. which Impedance requirements from I.MX53 system Development User's guide or Micron reference? and why difference between as ?
7. how do we calculate Impedance for each Track in my PCB's?
ahmedhelmy
http://www.mediafire.com/file/ba6b8p..._V1I1.rar/file
I finished the part of DDRM 3 with MAX53 please cheek and tell me what is wrong?and please answer this questions
1. how to calculate number of decoupling capacitor for DDRM
2. For DDR-VREF
1. power supply for voltage divider is 1.5V in Micron reference (TN-46-14)but in i.MX53 System Development
User’s Guide is NVCC_EMI_DRAM what is correct ?
2. Can I put his voltage divider for each DDRM IC or place one Voltage divider for the Max53? And why?
3. why all ports for each data and control swapped in i.MX53 System Development User’s Guide.
4. Which Stack-up is prefer from I.MX53 system Development User's guide or Micron reference? and why difference between them ?
5. How do we calculate number of Layer Need in my PCB's?
6. which Impedance requirements from I.MX53 system Development User's guide or Micron reference? and why difference between as ?
7. how do we calculate Impedance for each Track in my PCB's?
ahmedhelmy
http://www.mediafire.com/file/ba6b8p..._V1I1.rar/file
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