LPCXpresso IDE中的主题 Re: SPI slave on LPC1343 https://community.nxp.com/t5/LPCXpresso-IDE/SPI-slave-on-LPC1343/m-p/561721#M16432 <HTML><HEAD></HEAD><BODY><STRONG>Content originally posted in LPCWare by daniel.widyanto on Mon Apr 22 21:11:34 MST 2013</STRONG><BR /><SPAN>1) Yup. Max SSP in slave mode is (Main Clock / SSPxCLKDIV / 12). Assuming your Main Clock is 72Mhz, SSPxCLKDIV = 1, your max transfer rate is 6Mbit/sec</SPAN><BR /><BR /><SPAN>2) Yup. The SSEL must toggle in between the SPI frame.</SPAN></BODY></HTML> Thu, 16 Jun 2016 00:52:41 GMT lpcware 2016-06-16T00:52:41Z SPI slave on LPC1343 https://community.nxp.com/t5/LPCXpresso-IDE/SPI-slave-on-LPC1343/m-p/561720#M16431 <HTML><HEAD></HEAD><BODY><STRONG>Content originally posted in LPCWare by jookie on Mon Apr 22 02:06:47 MST 2013</STRONG><BR /><SPAN>Hello,</SPAN><BR /><BR /><SPAN>just 2 quick (dumb) questions :) </SPAN><BR /><SPAN>- 14.7.5 SSP Clock Prescale Register -- 'In Slave mode, the SSP clock rate provided by the master must not exceed 1/12 of the SSP peripheral clock...' -- does this mean that when my LPC is running on 72 MHz, then maximum clock (SCK) in SPI slave mode can be 6 MHz? (~ 6 Mbit, 0.75 MB/s)</SPAN><BR /><BR /><SPAN>- does the SPI CS line have to toggle (go H and L) for every received byte in SPI slave mode? (found somewhere here, on forum).</SPAN><BR /><BR /><SPAN>Jookie</SPAN></BODY></HTML> Thu, 16 Jun 2016 00:52:40 GMT https://community.nxp.com/t5/LPCXpresso-IDE/SPI-slave-on-LPC1343/m-p/561720#M16431 lpcware 2016-06-16T00:52:40Z Re: SPI slave on LPC1343 https://community.nxp.com/t5/LPCXpresso-IDE/SPI-slave-on-LPC1343/m-p/561721#M16432 <HTML><HEAD></HEAD><BODY><STRONG>Content originally posted in LPCWare by daniel.widyanto on Mon Apr 22 21:11:34 MST 2013</STRONG><BR /><SPAN>1) Yup. Max SSP in slave mode is (Main Clock / SSPxCLKDIV / 12). Assuming your Main Clock is 72Mhz, SSPxCLKDIV = 1, your max transfer rate is 6Mbit/sec</SPAN><BR /><BR /><SPAN>2) Yup. The SSEL must toggle in between the SPI frame.</SPAN></BODY></HTML> Thu, 16 Jun 2016 00:52:41 GMT https://community.nxp.com/t5/LPCXpresso-IDE/SPI-slave-on-LPC1343/m-p/561721#M16432 lpcware 2016-06-16T00:52:41Z