Hello,
In order to perform DDR3 calibration from i.MX7d, I am checking the spreadsheet below.
MX7D_DDR3_register_programming_aid_v1_2.xlsx
I have a question about T_RRD on line 125 in the spreadsheet.
On cell F125 of sheet, "Program this to (tRRD/2) and round up to the next integer value.” is listed.
However, this seems different from the formula in cell D125.
=IF(ROUNDUP(((C125/C31)/2),0)<2, 2, ROUNDUP(((C125/C31)/2),0))
C31 is Clock Cycle Time, should T_RRD be divided by this?
best regards.
解決済! 解決策の投稿を見る。
I found out that this is necessary to align the units.
thank you.
Good new it work, wish you have a nice day