1.4.1 Design Implementation

The following figure shows the top-level Libero design of the PolarFire system services design.

Figure 1-5. Top Level Libero Design

The following table lists the important I/O signals of the design.

Table 1-3. Input and Output Signals
SignalDescription
REF_CLK_0Input 50 MHz clock from the on-board 50 MHz oscillator
resetnOn-board reset push-button for the PolarFire device
UART_RXInput signals received from the serial UART terminal
UART_TXOutput signals transmitted to the serial UART terminal
GPIO_OUT[3:0]On-board LED outputs
GPIO_IN[3:0]To interface on-board DIP switches