Hi, We are using the MAX3421 USB-HOST/PERIPHERAL Controller interfaced with the M32C87 controller through SPI for the Mass Storage device operation. We are facing some problem with that. We are putting the M32C Controller into Sleep (STOP mode) mode and not the MAX3421, if the USB host is not sending any data to the controller (USB is disconnected) for 20 secs and once if we connect the USB cable into the PC the Controller has to wake-up and has to detect the USB drive on the Explorer. But the controller is not able to detect, but the other things (waking up, SPI comm, UART etc.,) of the controller are working fine once it has waken-up. Have any body worked on this MAX3421/M32C87. Do we need to do any more things for the M32C or MAX3421 side after waking-up. Plz revet back. Thanks, Duraimurugan
Issue with the MAX3421 USB IC with the M32C controllers
Started by ●June 2, 2008