Identification and remapping method for DDR4 interface data interlaced routing

The invention relates to the technical field of chips, in particular to a DDR4 (Double Data Rate 4) interface data interlaced routing identification and remapping method, which comprises the following steps of: writing a specific code type one-hot code into an MPR (Multipoint Register) in a DRAM (Dynamic Random Access Memory) particle through a CA (Certificate Authority) signal line, and then reading back the one-hot code in the MPR through a DQ according to a parallel mode. According to the method and the device, the staggered connection condition between the DDRPHY and the DDR4 interface DQ of the DRAM particle can be automatically identified, and the register remap is automatically configured to remap the DQ in the DDRPHY. 本发明涉及芯片技术领域，尤其涉及一种DDR4接口数据交错走线的识别与重映射方法，通过CA信号线往DRAM颗粒里MPR寄存器写入特定码型独热码，然后通过DQ按照并列方式读回来MPR寄存器中的独热码。本发明可以自动识别DDRPHY与DRAM颗粒的DDR4接口DQ间交错连接情况，并自动配置寄存器remap重映射DDRPHY内DQ。