MPC8280 SDRAM 60x Bus按顺序写出错

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MPC8280 SDRAM 60x Bus按顺序写出错

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Contributor IV

在外面集成了两块SDRAM,型号是MT48LC4M32B2-。但是按照顺序向0地址写0x00000000,1地址写0x11111111,2地址写0x22222222,3地址写0x33333333,4地址写0x4444444,以此类推,数据写到0xffffffff后重新写入数据0x00000000.

但是SDRAM的数据写完后成如下状况,地址里的数据和预期的不一致。请问可能是哪里的原因?

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NXP TechSupport
NXP TechSupport

Perhaps some address lines are short-circuited on your board.

Have a great day,
Pavel Chubakov

 

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