LS1043A QSPI Interface

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LS1043A QSPI Interface

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julien_cavallo
Contributor IV

Dear Sir,

I develop a custom board with LS1043A CPU.

I would like to use the QSPI memory interface for booting device.

 I have somes questions about QSPI memory interface of the LS1043A CPU.

1) What is the QSPI memory space limitation in MBytes for the LS1043A CPU ? In the "QorIQ LS1043A Reference Manual" on page 178 System memory map show 512 MB for QuadSPI. 512MB it is the limitation of the entire QSPI space memory ?

2) Stacked QSPI device (two 512Mb die) like the MT25QU01GBBB8E12-0AAT from Micron can work with the LS1043A QSPI Interface ? Because The CPU has two chip select signals, QSPI_A_CS0 (chip select for the first die) and QSPI_A_CS1 (chip select for the second die) and the QSPI MT25QU01GBBB8E12-0AAT memory has only one chip select signal. 

3) If i use the QSPI MT25QU01GBBB8E12-0AAT connected with only one chip select signal (QSPI_A_CS0 signal), can i use the entire QSPI memory space 1Gb or also the first 512Mb die ?  

Thank is you in advance for your reply.

Best regards.

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ufedor
NXP Employee
NXP Employee

1) Yes.

2) The LS1043A QSPI chip-selects could be used to select separate SPI devices.

In case of the MT25QU01GBBB8E12-0AAT one chip-select (0) has to be used.

3) Entire 1Gb can be used.

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julien_cavallo
Contributor IV

Dear sir,

Thank is you for your quick reply.

Best regards

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