| ??? 08/06/09 07:46 Modified: 08/06/09 07:50 Read: times |
#168202 - Digitally switching RX input |
Hello.
I want to receive serial data in 8051 RX pin from an 6N138 and a SN75176. Not both at same time, each at a time, It could be possible to use a jumper and jobs done. But I was wondering, how could I switch the inputs digitally? the 8051 choosing from which CI the data will come. Both 6N138 and SN75176 outputs sharing the Serial RX of 8051. I believe it is possible, but dont have any clue on how to do this. |
| 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 |