c6678 spi boot模式下DDR table配置问题

user_hi

各位好，

自己做的板卡，采用SPI nor boot模式，使用的DDR型号为：MT41K256M16HA-125T:E，工作频率为1333.3MHZ，目前DDR table配置不正确导致DDR初始化失败。

根据文档“4Gb_DDR3L.pdf-Rev.O04/16EN” for MT41K256M16-125 查询该DDR3芯片的参数，使用“DDR3 Register Calculate v4.xlsx”来计算寄存器的参数，如附件，由于DDR3 Register Calculate v4.xlsx”没有该芯片参数，所以选择“User Defined”列，并自己修改各参数，请各位大神帮忙看看，哪里设置不正确，导致DDR 初始化失败。

PS：之前板卡采用DDR型号为：MT41J256M16HA-125E，DDR table设置正确，DDR初始化成功，程序成功boot。

DDR3 Register Calc v4 - MT41K256M16HA-125E.xlsx

9 年多前

0 user_hi 9 年多前

Intellectual 380 points

之前 DDR table配置如下：

00 00 00 70 //length
00 87 35 00 //where to load ddr table to L2
02 42 80 F5 //config select
00 00 00 00 //pll Prediv
00 00 00 1C //pll Mul
00 00 00 02 //pll post div
63 06 2A 32 //sd ram config
00 00 00 00 //sdram config 2
00 00 14 50 //sdram fresh cntrl
11 13 78 3C //sdram timing 1
30 B4 7F E3 //sdram timing 2
55 9F 8A DF //sdram timing 3
00 00 00 00
00 00 00 00
00 00 00 00
00 01 00 00 //perform count config
00 00 00 00
00 00 00 00
00 00 00 00
70 07 32 14 //sdRamoutImpedCalcfg
00 00 00 00
00 10 01 0F //ddr phy control1
00 00 00 00
00 00 00 00
00 00 00 00
00 00 00 00
10 00 00 00 //ecc cntrl
00 00 00 00
00 00 00 00
00 00 03 05 //rdWrtExcThresh