TIDA-00862
RS-485 双线制全双工参考设计
TIDA-00862
概述
The design enables full duplex RS-485 communications over a single pair of conductors rather than four by utilizing bus contention. By adding small-valued serial resistors to the bus lines to limit currents, a tri-stated differential bus is allowed and the SN65HVD96 SymPol transciver can be used to detect a state of bus contention. Simple digital logic and analog filtering techniques enable both transceivers to drive and receive from eachother simultaneously without the need for 2 additional bus wires.
特性
- Full duplex differential signaling
- Up to 1Mbps data rate
- Requires only two bus wires
- Physical level implementation
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| 类型 | 标题 | 下载最新的英文版本 | 日期 | |||
|---|---|---|---|---|---|---|
| * | 设计指南 | Full Duplex RS-485 Over Two Wires Design Guide | 2016年 2月 10日 |