Other NXP ProductsのトピックRW612: Using external NOR Flash on the PSRAM-QSPI lines https://community.nxp.com/t5/Other-NXP-Products/RW612-Using-external-NOR-Flash-on-the-PSRAM-QSPI-lines/m-p/2172736#M30118 <P>Hello,</P><P>I am working on a custom board based on the <STRONG>RW612</STRONG> module.<BR />The module provides two QSPI/FlexSPI interfaces:</P><UL><LI><P>Port A1 → connected to the boot flash.</P></LI><LI><P>Port B1 → normally intended for an external PSRAM.</P></LI></UL><P>Since I do not use PSRAM, I would like to connect an <STRONG>external NOR Flash (Micron MT25QL01GBBB, 1 Gbit)</STRONG> on Port B1 instead.</P><P>My questions:</P><OL><LI><P>Is it generally possible to use the “PSRAM port” (FlexSPI Port B1) for an additional NOR Flash device?</P></LI><LI><P>What changes are required in the SDK examples to make this work?</P><UL><LI><P>Do I only need to configure the pin-mux for Port B1 to route to the NOR Flash pins?</P></LI><LI><P>Is it sufficient to set devicePort = kFLEXSPI_PortB1 and deviceType = kSerialNorCfgOption_DeviceType_ReadSFDP_SDR in flexspi_mem_config_t?</P></LI><LI><P>Can I rely on FLEXSPI_NOR_GenerateConfigBlockUsingSFDP to automatically configure the Micron flash device correctly?</P></LI></UL></LI><LI><P>The current <STRONG>NOR Flash SDK examples</STRONG>&nbsp; doesn't work when I switch the parameters to Port B1. Is there an official way or example to use a <STRONG>second external NOR Flash</STRONG> on Port B1?</P></LI></OL><P>My goal is to use the NOR Flash as additional storage (erase/program/read), not as a boot device.</P><P>Any guidance or examples would be greatly appreciated!</P><P>Best regards</P> Fri, 19 Sep 2025 10:31:32 GMT rkapoor 2025-09-19T10:31:32Z RW612: Using external NOR Flash on the PSRAM-QSPI lines https://community.nxp.com/t5/Other-NXP-Products/RW612-Using-external-NOR-Flash-on-the-PSRAM-QSPI-lines/m-p/2172736#M30118 <P>Hello,</P><P>I am working on a custom board based on the <STRONG>RW612</STRONG> module.<BR />The module provides two QSPI/FlexSPI interfaces:</P><UL><LI><P>Port A1 → connected to the boot flash.</P></LI><LI><P>Port B1 → normally intended for an external PSRAM.</P></LI></UL><P>Since I do not use PSRAM, I would like to connect an <STRONG>external NOR Flash (Micron MT25QL01GBBB, 1 Gbit)</STRONG> on Port B1 instead.</P><P>My questions:</P><OL><LI><P>Is it generally possible to use the “PSRAM port” (FlexSPI Port B1) for an additional NOR Flash device?</P></LI><LI><P>What changes are required in the SDK examples to make this work?</P><UL><LI><P>Do I only need to configure the pin-mux for Port B1 to route to the NOR Flash pins?</P></LI><LI><P>Is it sufficient to set devicePort = kFLEXSPI_PortB1 and deviceType = kSerialNorCfgOption_DeviceType_ReadSFDP_SDR in flexspi_mem_config_t?</P></LI><LI><P>Can I rely on FLEXSPI_NOR_GenerateConfigBlockUsingSFDP to automatically configure the Micron flash device correctly?</P></LI></UL></LI><LI><P>The current <STRONG>NOR Flash SDK examples</STRONG>&nbsp; doesn't work when I switch the parameters to Port B1. Is there an official way or example to use a <STRONG>second external NOR Flash</STRONG> on Port B1?</P></LI></OL><P>My goal is to use the NOR Flash as additional storage (erase/program/read), not as a boot device.</P><P>Any guidance or examples would be greatly appreciated!</P><P>Best regards</P> Fri, 19 Sep 2025 10:31:32 GMT https://community.nxp.com/t5/Other-NXP-Products/RW612-Using-external-NOR-Flash-on-the-PSRAM-QSPI-lines/m-p/2172736#M30118 rkapoor 2025-09-19T10:31:32Z