| ??? 08/06/09 08:00 Read: times |
#168205 - Multiplexing Responding to: ???'s previous message |
If multiplexing one UART, you need any of:
- mechanical switch/strap/... to select signal - processor that can internally configure which RX pin to use - external chips that have enable signal, so the inactive chip can be set in tristate - use an external 2-to-1 MUX to select which signal to reach the processor pin |
| Topic | Author | Date |
| Digitally switching RX input | 01/01/70 00:00 | |
| Multiplexing | 01/01/70 00:00 | |
| tristate | 01/01/70 00:00 | |
| Spare chips | 01/01/70 00:00 | |
| You can build a 2:1 mux | 01/01/70 00:00 | |
| I vote for Richard's method | 01/01/70 00:00 | |
| 6N138 can be strobed at Vb pin... | 01/01/70 00:00 | |
| Have you considered a chip with 2 UARTs? | 01/01/70 00:00 | |
two diodes and a resistor | 01/01/70 00:00 |