AXEL Lite SOM/AXEL Lite Hardware/Peripherals/UART
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| ID# | Issue Date | Notes | |
| 27/10/2020 | New documentation layout | ||
Peripheral UART[edit | edit source]
Universal Asynchronous Receiver/Transmitter (UART) provides serial communication capability with external devices through a level converter like RS-232 or RS-485.
Description[edit | edit source]
The UART interface available on AXEL Lite is based on i.MX6 SoC.
The UART ports support the following standards and features:
- One of the five UARTs (UART1) supports 8-wire while others four supports 4-wire
- High-speed TIA/EIA-232-F compatible, up to 4.0 Mbit/s
- Serial IR interface low-speed, IrDA-compatible (up to 115.2 Kbit/s)
- 9-bit or Multidrop mode (RS-485) support (automatic slave address detection)
- 7 or 8 data bits for RS-232 characters, or 9 bit RS-485 format
- 1 or 2 stop bits
- Programmable parity (even, odd, and no parity)
- Hardware flow control support for request to send (RTS_B) and clear to send (CTS_B) signals
- RS-485 driver direction control via CTS_B signal
- Auto baud rate detection (up to 115.2 Kbit/s)
- Two independent, 32-entry FIFOs for transmit and receive
Pin mapping[edit | edit source]
The Pin mapping is described in the Pinout table section
