NFCのトピックPN7462 SPI TX/RX parallel transactions https://community.nxp.com/t5/NFC/PN7462-SPI-TX-RX-parallel-transactions/m-p/654422#M1774 <HTML><HEAD></HEAD><BODY><P>Dear all,</P><P>according to software manual UM10913 (chapter 4.4.2 "SPIM HAL") it seems that SPI transmit and reception has to be done sequentially (Fig. 12).</P><P>Is this correct?</P><P></P><P>Normally it is common to transmit and receive data during the same SPI transactions.</P><P>How is it possible to achieve that with PN7462?</P><P></P><P>Best Regards</P><P>Stefan</P></BODY></HTML> Tue, 31 Jan 2017 09:41:51 GMT stefanmueller 2017-01-31T09:41:51Z PN7462 SPI TX/RX parallel transactions https://community.nxp.com/t5/NFC/PN7462-SPI-TX-RX-parallel-transactions/m-p/654422#M1774 <HTML><HEAD></HEAD><BODY><P>Dear all,</P><P>according to software manual UM10913 (chapter 4.4.2 "SPIM HAL") it seems that SPI transmit and reception has to be done sequentially (Fig. 12).</P><P>Is this correct?</P><P></P><P>Normally it is common to transmit and receive data during the same SPI transactions.</P><P>How is it possible to achieve that with PN7462?</P><P></P><P>Best Regards</P><P>Stefan</P></BODY></HTML> Tue, 31 Jan 2017 09:41:51 GMT https://community.nxp.com/t5/NFC/PN7462-SPI-TX-RX-parallel-transactions/m-p/654422#M1774 stefanmueller 2017-01-31T09:41:51Z Re: PN7462 SPI TX/RX parallel transactions https://community.nxp.com/t5/NFC/PN7462-SPI-TX-RX-parallel-transactions/m-p/654423#M1775 <HTML><HEAD></HEAD><BODY><P>Hello <A _jive_internal="true" data-content-finding="Community" data-userid="291845" data-username="stefanmueller" href="https://community.nxp.com/people/stefanmueller">Stefan</A>,</P><P></P><P>&nbsp;According to SPI protocol, duiring communication between 2 SPI devices, each device couldn't only act as 'transmitter' or 'receiver', in a clock duration, each SPI device will transmit&nbsp; and&nbsp; receive&nbsp; one-bit data at the same time, so SPI transaction is bidirectional</P><P></P><P>Best Regards,</P><P>Weidong</P></BODY></HTML> Sat, 04 Feb 2017 07:45:13 GMT https://community.nxp.com/t5/NFC/PN7462-SPI-TX-RX-parallel-transactions/m-p/654423#M1775 weidong_sun 2017-02-04T07:45:13Z