423 Cyclic Redundancy Check 8 bit
423 : Cyclic Redundancy Check 8 bit
- Author: EconomIC Engineers
- Description: Error detecting circuit commonly used in digital networks and storage devices to detect accidental changes to digital data.
- GitHub repository
- Open in 3D viewer
- View in Wokwi
- Clock: 0 Hz
- Feedback: ✅ 1
How it works
https://en.wikipedia.org/wiki/Cyclic_redundancy_check
How to test
https://quickbirdstudios.com/blog/validate-data-with-crc/ https://thepiandi.blogspot.com/2014/07/cyclic-redundancy-check-crc-of-ds18b20.html
External hardware
Needed will be LEDs, a clock or button to step clock, a switch for reset and inputs.
IO
| # | Input | Output | Bidirectional |
|---|---|---|---|
| 0 | Data Stream input | 8th bit | |
| 1 | 7th bit | ||
| 2 | 6th bit | ||
| 3 | 5th bit | ||
| 4 | 4th bit | ||
| 5 | 3rd bit | ||
| 6 | 2nd bit | ||
| 7 | Set for all flip flops | 1st bit |
User feedback
- JX518: The chip worked functionally when compared with Wokwi and when using an Arduino for input. We did not test the timing analysis however. Link for more details