Hi all, I am currently trying to implement the USB host controller for the MPC8270. As you would be aware, the Host controller on this chip is neither UHCI nor OHCI compliant. I am trying to follow up on Brad Parker's architecture for my development. (you can find Brad's 8xx USB work at: http://www.heeltoe.com/software/usb/usb.html, if interested ) Well coming to my problem. The 82XX allows the USB Host Controller to support the automatic transmission of SOF tokens. This mechanism is enabled by setting USMOD[SFTE]. However, on registering an interrupt handler on the USB interrupt 11, i am not being able to see any interrupts at the 1ms interval as specified by the MPC8280 reference manual. Is it true that on setting the SFTE bit, the SOF interrupts should be generated via interrupt 11 (USB interrupt no) I was thinking of an alternate approach by using the timer1 to generate the 1ms interrupt instead. However, i suppose this would require a h/w change? If anyone has any clues on this problem, it would be of great help if you could reply. Thanks in advance. regards, Vishal
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