269 pll
269 : pll
- Author: Mickey Cheah
- Description: 100 Mhz PLL
- GitHub repository
- Clock: 0 Hz
How it works
100MHz VCO, vary vctrl to change frequency from ~100MHz to 180Mhz
How to test
Apply vctrl=1.0V, observe vo or vo_dig pins
External hardware
none
IO
| # | Input | Output | Bidirectional |
|---|---|---|---|
| 0 | up | ||
| 1 | vosc_16 | ||
| 2 | down | ||
| 3 | |||
| 4 | |||
| 5 | |||
| 6 | |||
| 7 | vref | vo_dig |
Analog pins
ua | PCB Pin | Internal index | Description |
|---|---|---|---|
| 0 | B4 | 10 | vo |
| 1 | B5 | 11 | vstart |
| 2 | B0 | 6 | vctrl |