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Tài trợ cho PIC Vietnam |
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Ðiều Chỉnh | Xếp Bài |
10-07-2007, 12:09 AM
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#8 |
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Trưởng lão PIC bang
Tham gia ngày: Feb 2006
Nơi Cư Ngụ: Tp. HCM, Việt Nam
Bài gửi: 3,025
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For RX signal of PIC, you will need a 3-to-1 multiplexer. For TX signal of PIC, you will need a 1-to-3 demultiplexer.
Have a look at the following links: http://www.play-hookey.com/digital/m...our_input.html http://www.play-hookey.com/digital/d...emux_four.html Remember that you would need 3 separate level shifters (MAX232, for example) in total, when you use commercial multiplexer/demultiplexer chips (because they are logic chips). Sorry I don't have time to create a schematic for you! Cheers,
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Biển học mênh mông, sức người có hạn. Đang gặp vấn đề cần được giúp đỡ? Hãy dành ra vài phút đọc luồng sau: http://www.picvietnam.com/forum/showthread.php?t=1263 |
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namqn
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