Digital Signal ControllersのトピックSC16IS752 in SPI mode? https://community.nxp.com/t5/Digital-Signal-Controllers/SC16IS752-in-SPI-mode/m-p/722817#M1161 <HTML><HEAD></HEAD><BODY><P>Hi community,</P><P>We have received our prototypes using two&nbsp;SC16IS752 on the SPI bus.</P><P>Unfortunately we cannot manage to get any thing out of it (SO always HIGH).</P><P>SPI clock, SPI SI, RST, VDD, VSS, SPI select all these pins have been double-checked and are fine.</P><P>First thing after bootup, we are trying to write to the SPR register and read its value. So we write 2 bytes (cmd 0x38 + rdm data) and then read again (cmd 0xB8).</P><P>Note that we have also tried to get the chip to work as stand-alone, without any success.</P><P>Anyone encountering similar issues?</P></BODY></HTML> Thu, 01 Mar 2018 15:25:34 GMT vincentvuarnoz 2018-03-01T15:25:34Z SC16IS752 in SPI mode? https://community.nxp.com/t5/Digital-Signal-Controllers/SC16IS752-in-SPI-mode/m-p/722817#M1161 <HTML><HEAD></HEAD><BODY><P>Hi community,</P><P>We have received our prototypes using two&nbsp;SC16IS752 on the SPI bus.</P><P>Unfortunately we cannot manage to get any thing out of it (SO always HIGH).</P><P>SPI clock, SPI SI, RST, VDD, VSS, SPI select all these pins have been double-checked and are fine.</P><P>First thing after bootup, we are trying to write to the SPR register and read its value. So we write 2 bytes (cmd 0x38 + rdm data) and then read again (cmd 0xB8).</P><P>Note that we have also tried to get the chip to work as stand-alone, without any success.</P><P>Anyone encountering similar issues?</P></BODY></HTML> Thu, 01 Mar 2018 15:25:34 GMT https://community.nxp.com/t5/Digital-Signal-Controllers/SC16IS752-in-SPI-mode/m-p/722817#M1161 vincentvuarnoz 2018-03-01T15:25:34Z