LayerscapeのトピックLS1046A QSPI signal state when PORESET_B asserted https://community.nxp.com/t5/Layerscape/LS1046A-QSPI-signal-state-when-PORESET-B-asserted/m-p/652333#M2294 <HTML><HEAD></HEAD><BODY><P>For the LS1046A, when PORESET_B is asserted, are all&nbsp;QSPI signals in high impedance state?</P><P></P><P>I am wondering if I can program QSPI RCW/PBI/boot flash using an external master if I apply power&nbsp;and keep&nbsp;PORESET_B asserted. Any problems doing it this way?</P></BODY></HTML> Sun, 30 Apr 2017 21:44:17 GMT sabine_s 2017-04-30T21:44:17Z LS1046A QSPI signal state when PORESET_B asserted https://community.nxp.com/t5/Layerscape/LS1046A-QSPI-signal-state-when-PORESET-B-asserted/m-p/652333#M2294 <HTML><HEAD></HEAD><BODY><P>For the LS1046A, when PORESET_B is asserted, are all&nbsp;QSPI signals in high impedance state?</P><P></P><P>I am wondering if I can program QSPI RCW/PBI/boot flash using an external master if I apply power&nbsp;and keep&nbsp;PORESET_B asserted. Any problems doing it this way?</P></BODY></HTML> Sun, 30 Apr 2017 21:44:17 GMT https://community.nxp.com/t5/Layerscape/LS1046A-QSPI-signal-state-when-PORESET-B-asserted/m-p/652333#M2294 sabine_s 2017-04-30T21:44:17Z Re: LS1046A QSPI signal state when PORESET_B asserted https://community.nxp.com/t5/Layerscape/LS1046A-QSPI-signal-state-when-PORESET-B-asserted/m-p/652334#M2295 <HTML><HEAD></HEAD><BODY><P>Yes, external master can program SPI Flash connected to QSPI when PORESET_B is asserted.</P></BODY></HTML> Mon, 01 May 2017 07:22:43 GMT https://community.nxp.com/t5/Layerscape/LS1046A-QSPI-signal-state-when-PORESET-B-asserted/m-p/652334#M2295 ufedor 2017-05-01T07:22:43Z