MPC5777C Address lines of EBI

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MPC5777C Address lines of EBI

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prathapvc
Contributor III

Does MPC5777C device offers 23 address lines in non-multiplexed mode?

When non-multiplexed mode has been choosen, bits 9-30 will be reflected on the external bus D_ADD [9:30]. There is 22 address line thus maximum memory size is 8Mbytes (=2^23 because of 16-bit data bus and so D_ADD31 is not used) per chip select.

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davidtosenovjan
NXP TechSupport
NXP TechSupport

Hi, 22 address lines. ADD31 is basically replaced by two byte strobe lines because 16-bit data port.

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647件の閲覧回数
prathapvc
Contributor III

ok thank you

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648件の閲覧回数
davidtosenovjan
NXP TechSupport
NXP TechSupport

Hi, 22 address lines. ADD31 is basically replaced by two byte strobe lines because 16-bit data port.