USB
The ECM1900 has two vertical USB-C connectors on board. One provides USB serial access to the Console UART, and the other provides a USB 2.0 interface to the PS side of the FPGA.
USB UART Console
The vertical USB-C connector on the ECM1900 labeled “UART” on the silkscreen provides access to the default UART console. Connect a USB cable to the host computer to get virtual serial port access to the console output from the board.
By default use an 115200 baud serial connection.
| FPGA Pin | FPGA Pin Name | Signal |
|---|---|---|
| E27 | PS_MIO15 | UART0_TX |
| A27 | PS_MIO14 | UART0_RX |
PS-USB2
The vertical USB-C connector on the ECM1900 labeled “PS-USB2” on the silkscreen provides a USB 2.0 host interface to the PS side of the FPGA. This interface uses a USB3320C-EZK USB PHY, and has a current limited power output.
Our BRK1900 example Linux image can be used as an example of how to configure Linux to utilize this port.