| USB devices cannot be recognized after resetting the USB Bus | |
|---|---|
| Affects | USB highspeed Host |
| Issue | USB devices cannot be recognized after using command usb reset or usb stop |
| Effect | USB devices cannot be recognized after using command usb reset or usb stop |
| Solution / Workaround | |
| USB does not work with TQMa7S with MBa7x | |
|---|---|
| Affects | USB highspeed Host |
| Issue | USB highspeed Host does not work with TQMa7S |
| Effect | USB highspeed Host does not work with TQMa7S |
| Solution / Workaround | Will be fixed in the next BSP revision |
| RS485 bus block in half-duplex mode | |
|---|---|
| Affects | RS485 via UARTx |
| Issue | During i.MX7 reset the UARTx.CTS# pin is low by default (CPU internal pull down) |
| Effect | Using the MBa7x RS485 circuitry in a half-duplex slave device or half-duplex multi-master environment may block the RS485 bus during i.MX7 reset. The bus is released as soon as the UARTx.CTS# pin is properly configured by software (e.g. U-Boot, Linux, etc.) |
| Solution / Workaround | Add a 10k pull up to the UARTx.CTS# signal on carrier board |