| # PLLE2_ADV tests |
| |
| Allows to vrify PLLE2_ADV functionality in hardware |
| |
| Switches: |
| - SW0: Reset (active high) |
| - SW1: PLL PWRDWN port (active high) |
| - SW2: CLKINSEL. When low CLKIN=100MHz, when high CLLKIN=50MHz. |
| |
| LEDs: |
| - LED0: blinks at 23.841Hz / 11.920Hz |
| - LED1: blinks at 11.920Hz / 5.960Hz |
| - LED2: blinks at 7.947HZ / 3.9735Hz |
| - LED3: blinks at 5.960Hz / 2.980Hz |
| - LED4: blinks at 4.768Hz / 2.384Hz |
| - LED5: blinks at 3.973Hz / 1.9865Hz |
| - LED6: PLL LOCK indicator (lit when locked) |
| |
| There are 3 test variants: |
| - `pll_int_basys3_x1y0` - Internal feedback |
| - `pll_buf_basys3_x1y0` - Feedback through a BUFG |
| - `pll_ext_basys3_x1y0` - External feedback. Need to short `JC.1` and `JC.2` on the Basys3 board. |
