topic USB host control transfer data toggle problem in i.MX Processors https://community.nxp.com/t5/i-MX-Processors/USB-host-control-transfer-data-toggle-problem/m-p/160835#M3299 <HTML><HEAD></HEAD><BODY><P>Background info: I'm writing a host controller driver for the i.MX28EVK.</P><P></P><P>Problem: When reading from device (i.e. the data phase of the control transfer is an IN transaction), host sends a DATA0 packet in the status phase. According to the USB 2.0 standard ch. 8.5.3, this should be a DATA1 packet. Is this a hardware issue? Is there any way to work around or solve the issue?</P></BODY></HTML> Wed, 16 May 2012 14:03:02 GMT FredrikMoller 2012-05-16T14:03:02Z USB host control transfer data toggle problem https://community.nxp.com/t5/i-MX-Processors/USB-host-control-transfer-data-toggle-problem/m-p/160835#M3299 <HTML><HEAD></HEAD><BODY><P>Background info: I'm writing a host controller driver for the i.MX28EVK.</P><P></P><P>Problem: When reading from device (i.e. the data phase of the control transfer is an IN transaction), host sends a DATA0 packet in the status phase. According to the USB 2.0 standard ch. 8.5.3, this should be a DATA1 packet. Is this a hardware issue? Is there any way to work around or solve the issue?</P></BODY></HTML> Wed, 16 May 2012 14:03:02 GMT https://community.nxp.com/t5/i-MX-Processors/USB-host-control-transfer-data-toggle-problem/m-p/160835#M3299 FredrikMoller 2012-05-16T14:03:02Z Re: USB host control transfer data toggle problem https://community.nxp.com/t5/i-MX-Processors/USB-host-control-transfer-data-toggle-problem/m-p/160836#M3300 <HTML><HEAD></HEAD><BODY><P>It was an error in my code.&nbsp;Hardware is fine.&nbsp;I relied on automatic data toggling which caused the controller hardware to toggle the data toggle from DATA1 (data phase) to DATA0 (status phase).</P></BODY></HTML> Thu, 14 Jun 2012 08:31:47 GMT https://community.nxp.com/t5/i-MX-Processors/USB-host-control-transfer-data-toggle-problem/m-p/160836#M3300 FredrikMoller 2012-06-14T08:31:47Z