| ??? 02/25/06 05:54 Read: times |
#110747 - board to board or all on one board Responding to: ???'s previous message |
Sasha Jevtic said:
You can connect the TXD pin on each 8051 to the RXD pin on the other 8051 chip, and it will work. However, you lose the benefits associated with the use of RS-232 level translators, namely larger voltage swings and larger noise margins. This configuration is generally not suggested, as it is likely to prove problematic at any appreciable distance, especially at higher speeds. I would only entertain it as a possibility for two chips on the same board that are in relatively close proximity in an electrically mild environment. Onboard chip-to-chip communication shouldn't be a problem. If I was going board-to-board (perhaps over a backplane, or discrete wiring), I'd use differential drivers (probably LVDS) instead of RS-232-compliant drivers. -a |
| Topic | Author | Date |
| project-serial communication | 01/01/70 00:00 | |
| first requirement is to read | 01/01/70 00:00 | |
| What do you mean? | 01/01/70 00:00 | |
| project-serial communication | 01/01/70 00:00 | |
| re: serial comms | 01/01/70 00:00 | |
| Proviso | 01/01/70 00:00 | |
| HW flow control options/alternatives | 01/01/70 00:00 | |
| board to board or all on one board | 01/01/70 00:00 | |
| Good idea | 01/01/70 00:00 | |
| Self-pacing | 01/01/70 00:00 | |
| 8051 serial comm. | 01/01/70 00:00 | |
| oh yes | 01/01/70 00:00 | |
| Mahesh's web site | 01/01/70 00:00 | |
| He's a Pseudo-Programmer | 01/01/70 00:00 | |
| Me too. | 01/01/70 00:00 | |
what I noted | 01/01/70 00:00 |