| ??? 11/30/04 21:22 Read: times Msg Score: +2 +2 Good Answer/Helpful |
#82250 - Rule of thumb Responding to: ???'s previous message |
* The most commonly used bitrate is 9600 bps and others are -usually- related by integer numbers (i.e. 4800, 19200, etc.)
* The UART always introduces a "/16" factor * A standard derivative adds an additional factor "/12" * Bitrates can only be derived through integer division Putting this together we can say that, as a rule of thumb, any clockfrequency that is an integer multiple of 9600*16*12 (=1.8432MHz) can be used. Standard crystal frequencies that comply with this are: - 1.8432MHz (x1) - 3.6864MHz (x2) - 7.3728MHz (x4) - 11.0592MHz (x6) - 14.7456MHz (x8) - 18.432MHz (x10) .... Well, you get the picture :o) Hope this helps. Best regards, Rob. |
| Topic | Author | Date |
| PC Compatible Baud Rate | 01/01/70 00:00 | |
| that depends | 01/01/70 00:00 | |
| Rule of thumb | 01/01/70 00:00 | |
| More | 01/01/70 00:00 | |
| Rob | 01/01/70 00:00 | |
| 11.059MHz | 01/01/70 00:00 | |
| It's in the tutorials | 01/01/70 00:00 | |
| Link Fix for Serial Tutorial | 01/01/70 00:00 | |
| T2 not mentioned in tutorial | 01/01/70 00:00 | |
| To Ijaz Ahmed | 01/01/70 00:00 | |
| solutions | 01/01/70 00:00 | |
| Handshaking Signals | 01/01/70 00:00 | |
Joseph | 01/01/70 00:00 |