58 ro-based_tempsense
58 : ro-based_tempsense
- Author: Jorge Marin, Daniel Arevalos
- Description: Ring oscillator whose frecuency depends on temperature.
- GitHub repository
- Clock: 10000 Hz
How it works
Uses counters to determine the number of cycles of the ring oscillator within a clock period, wich will then be sent through the UART to determine the temperature vs frecuency caracteristic.
How to test
After reset and enable are set, the ring oscillator should start and then when a START code is received by UART, a value is sent back.
IO
| # | Input | Output |
|---|---|---|
| 0 | clk_internal | tx |
| 1 | clk_external | sum[8] |
| 2 | clk_sel | sum[10] |
| 3 | enable_inv_osc | sum[13] |
| 4 | enable_nand_osc | sum[15] |
| 5 | reset | sum[17] |
| 6 | rx | sum[19] |
| 7 | osc_sel | sum[21] |