2.3.1. Board Status Lights, DIP Switches, and Pushbuttons
LED | Description |
---|---|
Green LEDs | |
0 | HDMI Rx IO PLL locked |
1 | HDMI Rx ready |
2 | HDMI Rx locked |
3 | HDMI Rx oversample |
4 | HDMI Tx IO PLL locked |
5 | HDMI Tx ready |
6 | HDMI Tx PLL locked |
7 | HDMI Tx oversample |
Red LEDs | |
0 | DDR4 EMIF calibration in progress |
1 | DDR4 EMIF calibration fail |
7:2 | Unused. |
Pushbutton | Description |
---|---|
PB0 | Controls the display of the Intel icon in the top right-hand corner of the output display. At startup display of the icon is enabled. Pressing PB0 toggles the enable for the icon display. |
PB1 | Controls the scaling mode of the design. When a source or sink is hot-plugged the design defaults to either:
Each time you press PB1 the design swaps to the next scaling mode (passthrough > upscale, upscale > downscale, downscale > passthrough). . |
PB2 | Unused |
Switch(es) | Position | Switch | Position | Function |
---|---|---|---|---|
1 | - | - | - | Enables Nios II terminal printing when set to ON |
2 |
OFF ON |
- | - | Set output bits per color: 8 bit 10 bit |
4 |
OFF OFF ON ON |
3 |
OFF ON OFF ON |
Set output color space and sampling: RGB 4:4:4 YCbCr 4:4:4 YCbCr 4:2:2 YCbCr 4:2:0 |
6 |
OFF OFF ON ON |
5 |
OFF ON OFF ON |
Set output resolution and frame rate. 4K60 4K30 1080p60 1080i60 |
8:7 | - | - | - | Unused |