<![CDATA[全志T153MX-BCX的DDR4引脚]]>DDR4引脚说明，这不纯纯的废话吗？对应高8位还是低8位？咱能对照DDR4数据手册排查一遍吗？三星的DDR4就行。
SDQM0 →DRAM Data Mask Signal 0 I/O
SDQM1 →DRAM Data Mask Signal 1 I/O
SDQS0N →DRAM Bidirectional Data Strobe 0 (Active Low) I/O
SDQS0P →DRAM Bidirectional Data Strobe 0 (Active High) I/O
SDQS1N →DRAM Bidirectional Data Strobe 1 (Active Low) I/O
SDQS1P →DRAM Bidirectional Data Strobe 1 (Active High) I/O

找了半天，也没找到BG0引脚功能。就这3个bank选择引脚还对应不上，BG0，BA0，BA1。真要命
SBA0 DRAM Bank Address Signal 0 O
SBA1 DRAM Bank Address Signal 1 O
SBA2 DRAM Bank Address Signal 2 O

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