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AM3352 DDR3接口寄存器DDR_PHY_CTRL_1设置问题



看评估板的代码,#define MT41K256M16HA125E_EMIF_READ_LATENCY         0x100007

bit 9-8 (reg_phy_rd_local_odt)是00即ODT off. 是否意味着CPU收端不用有匹配

但是,看如下wiki,最后的示例中DQS调用模型是1002,表明是FULL的匹配(对应的reg_phy_rd_local_odt应该是10),这种不一致如何理解?和代码对应的model难道不应该是类似994的么?

processors.wiki.ti.com/.../How_to_use_the_AM335x_IBIS_Models

DQS Model_1002 INPUT,1.5V,FULLTERM, 0.88*RExt,IND,5%,DIFF_VREF_FULLTERM_9MA_5PER_1P5

Model_994 INPUT,1.5V,Pull-up/down off,IND,5%,DIFF_VREF_NOTERM_PUPD_OFF_5PER_1P5

谢谢各位support~