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Basic operiation Basic OperationBy default, the RF232 is programmed for transparent operation and will directly replace any cabled low-speed serial connection. While the RF link is constrained to half-duplex communications at a base rate of 18 kb/s, the buffered serial interface provides local full-duplex asynchronous communications at any data rate between 1.2 and 19.2 kbaud, using any common data format. In transparent mode, all four general-purpose inputs are copied directly to the corresponding outputs of the receiving module, allowing all common RS-232 signals to be used. And all I/O transitions are synchronized with respect to the serial data stream, on a byte-per-byte basis, thus enabling the use of these I/Os as data qualifiers suitable for a wide variety of other applications. In systems where data rates are high enough for buffer overflow to be a concern, software (XON/XOFF) data flow control can be used or, alternatively, the RTS/CTS signal pair can be configured to implement local hardware handshaking. When enabled, seamless encryption and/or decryption of the wireless link is performed using a customer-specified 64-bit key, and this without any penalty in either performance or flexibility. |
RF232 (click to enlarge)
RF232 data path
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