TS-4900 COM Ports

This board uses UARTs from both the CPU and the FPGA. The CPU uart 0 (/dev/ttymxc0) is dedicated to console for Linux and U-boot and not suggested to be reused. The other CPU UARTs for ttymxc1-4 are usable for end applications. These support up to 5Mb/s UART data with DMA.

The FPGA also emulates a MAX3100 UART interface accessible at /dev/ttyMAX0-2. These UARTs support a total throughput of about 115200 of any baud rate possible by the hardware.

All of these UARTs are accessed using the standard /dev/ interfaces. See these resources for information on programming with UARTs in Linux.

• Wikibook
• Linux Documentation Project Serial Programming Guide