Issues with Replacing SDRAM Chips on RT1052

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Issues with Replacing SDRAM Chips on RT1052

1,929 次查看
zhangyuanhe
Contributor I

My RT1052 board uses the IS42S16160 32MB SDRAM, which works perfectly. However, after replacing it with the IS42S16400 8MB SDRAM, it fails to work properly. What configurations need to be changed?

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1,903 次查看
Omar_Anguiano
NXP TechSupport
NXP TechSupport

You need to change the memsize of the device on the sdramconfig variable. This on the case that the only difference between the two is only the size, if there are more differences on timing  then the rest of parameters need to be tuned according the datasheet specifications.
Is the pinout of both similar?

Best regards,
Omar

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1,863 次查看
OneByte
Contributor III
is RT1052 support 8bit of row_addr ? i can not SEMC_SDRAM_COL8()?
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Omar_Anguiano
NXP TechSupport
NXP TechSupport

SDRAM device type with 2 banks or 8 columns is not supported.

Best regards,
Omar

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1,190 次查看
OneByte
Contributor III
ok, thanks your answer about my question!
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