ColdFire/68K Microcontrollers and ProcessorsのトピックAbout MCF5482 SPI to USB solution https://community.nxp.com/t5/ColdFire-68K-Microcontrollers/About-MCF5482-SPI-to-USB-solution/m-p/158120#M4787 <HTML><HEAD></HEAD><BODY><P>I want to connect a USB host to my MCF5482 platform via a MAX3421, the interface is SPI, the MAX3421 support spi clk up to 26M, and suport full speed USB host 12M bps.</P><P>&nbsp;</P><P>Is there any one used MCF54xx like this? I want to know how fast it is up to, I think it is impossible to reach 12M bps.</P><P>&nbsp;</P><P>Thank you.</P></BODY></HTML> Tue, 03 Mar 2009 16:51:44 GMT Jason_Shi 2009-03-03T16:51:44Z About MCF5482 SPI to USB solution https://community.nxp.com/t5/ColdFire-68K-Microcontrollers/About-MCF5482-SPI-to-USB-solution/m-p/158120#M4787 <HTML><HEAD></HEAD><BODY><P>I want to connect a USB host to my MCF5482 platform via a MAX3421, the interface is SPI, the MAX3421 support spi clk up to 26M, and suport full speed USB host 12M bps.</P><P>&nbsp;</P><P>Is there any one used MCF54xx like this? I want to know how fast it is up to, I think it is impossible to reach 12M bps.</P><P>&nbsp;</P><P>Thank you.</P></BODY></HTML> Tue, 03 Mar 2009 16:51:44 GMT https://community.nxp.com/t5/ColdFire-68K-Microcontrollers/About-MCF5482-SPI-to-USB-solution/m-p/158120#M4787 Jason_Shi 2009-03-03T16:51:44Z Re: About MCF5482 SPI to USB solution https://community.nxp.com/t5/ColdFire-68K-Microcontrollers/About-MCF5482-SPI-to-USB-solution/m-p/158121#M4788 <HTML><HEAD></HEAD><BODY><P>Hi,</P><P>&nbsp;</P><P>The DSPI module on MCF54xx can attain up to 25MHz and also you can use the eDMA module to reduce CPU load, I think with 26MHz SPI on MAX3421, it can satisfy the requirements for USB 12Mbps.</P><P>&nbsp;</P><P>By the way, you are not supposed to attain 12Mbps any way, it's just&nbsp;a theoratical value.</P></BODY></HTML> Fri, 06 Mar 2009 11:14:46 GMT https://community.nxp.com/t5/ColdFire-68K-Microcontrollers/About-MCF5482-SPI-to-USB-solution/m-p/158121#M4788 cutworth 2009-03-06T11:14:46Z