Kinetis MicrocontrollersのトピックKL26 SAI - when using RX in synchronous mode, what to do with SAI_RX_SYNC/SAI_RX_BCLK pins? NC, tie to TX clocks? https://community.nxp.com/t5/Kinetis-Microcontrollers/KL26-SAI-when-using-RX-in-synchronous-mode-what-to-do-with-SAI/m-p/446207#M26355 <HTML><HEAD></HEAD><BODY><P>The Reference Manual for KL26 I2S port is unclear what to do with the clocks of the block that is in synchronous mode.</P></BODY></HTML> Thu, 08 Oct 2015 16:51:35 GMT jasonmatocha 2015-10-08T16:51:35Z KL26 SAI - when using RX in synchronous mode, what to do with SAI_RX_SYNC/SAI_RX_BCLK pins? NC, tie to TX clocks? https://community.nxp.com/t5/Kinetis-Microcontrollers/KL26-SAI-when-using-RX-in-synchronous-mode-what-to-do-with-SAI/m-p/446207#M26355 <HTML><HEAD></HEAD><BODY><P>The Reference Manual for KL26 I2S port is unclear what to do with the clocks of the block that is in synchronous mode.</P></BODY></HTML> Thu, 08 Oct 2015 16:51:35 GMT https://community.nxp.com/t5/Kinetis-Microcontrollers/KL26-SAI-when-using-RX-in-synchronous-mode-what-to-do-with-SAI/m-p/446207#M26355 jasonmatocha 2015-10-08T16:51:35Z Re: KL26 SAI - when using RX in synchronous mode, what to do with SAI_RX_SYNC/SAI_RX_BCLK pins? NC, tie to TX clocks? https://community.nxp.com/t5/Kinetis-Microcontrollers/KL26-SAI-when-using-RX-in-synchronous-mode-what-to-do-with-SAI/m-p/446208#M26356 <HTML><HEAD></HEAD><BODY><P>Helloo Jason,</P><P></P><P>- SAI_RX_SYNC is receive frame synchronization , connect to the SAI_TX_SYNC of other SAI interface .</P><P>SAI_RX_BCLK is the clock of receive bit , connect to the SAI_TX_BCLK of other SAI interface .</P><P>- About the configuration of SAI clock , please refer to : 5.7.10 I2S/SAI clocking of the KL26 reference manual.</P><P><span class="lia-inline-image-display-wrapper" image-alt="pastedImage_0.png"><img src="https://community.nxp.com/t5/image/serverpage/image-id/59085i30E62CC53D42F558/image-size/large?v=v2&amp;px=999" role="button" title="pastedImage_0.png" alt="pastedImage_0.png" /></span></P><P></P><P>configure the related registers .</P><P>And if you use the CW or KDS IDE, you can create one project with PE, then add the component "Init_I2S", configure the CLOCK:</P><P><span class="lia-inline-image-display-wrapper" image-alt="pastedImage_1.png"><img src="https://community.nxp.com/t5/image/serverpage/image-id/59248i80601F4FB3BBF256/image-size/large?v=v2&amp;px=999" role="button" title="pastedImage_1.png" alt="pastedImage_1.png" /></span></P><P></P><P>Hope it helps</P><P></P><P><BR />Have a great day,<BR />Alice</P><P></P><P>-----------------------------------------------------------------------------------------------------------------------<BR />Note: If this post answers your question, please click the Correct Answer button. Thank you!<BR />-----------------------------------------------------------------------------------------------------------------------</P></BODY></HTML> Fri, 09 Oct 2015 08:36:51 GMT https://community.nxp.com/t5/Kinetis-Microcontrollers/KL26-SAI-when-using-RX-in-synchronous-mode-what-to-do-with-SAI/m-p/446208#M26356 Alice_Yang 2015-10-09T08:36:51Z Re: KL26 SAI - when using RX in synchronous mode, what to do with SAI_RX_SYNC/SAI_RX_BCLK pins? NC, tie to TX clocks? https://community.nxp.com/t5/Kinetis-Microcontrollers/KL26-SAI-when-using-RX-in-synchronous-mode-what-to-do-with-SAI/m-p/446209#M26357 <HTML><HEAD></HEAD><BODY><P>Hi Alice,</P><P></P><P>Thanks for your response.&nbsp; My main question was if I want to master the SAI TX and slave the SAI RX to the SAI TX clocks, when I put SAI RX into Synchronous mode, do I have to physically route the SAI TX BCLK and FS to the SAI RX.&nbsp; If not, I save 2 pins for other use.</P><P></P><P>I actually tried this out (had to make some mods to the SAI driver), and found that if SAI RX is in Synchronous mode, I do NOT have to physically drive SAI RX clocks.&nbsp; That was good news.</P></BODY></HTML> Thu, 05 Nov 2015 20:55:28 GMT https://community.nxp.com/t5/Kinetis-Microcontrollers/KL26-SAI-when-using-RX-in-synchronous-mode-what-to-do-with-SAI/m-p/446209#M26357 jasonmatocha 2015-11-05T20:55:28Z