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STFPC320 датащи(PDF) 53 Page - STMicroelectronics |
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STFPC320 датащи(HTML) 53 Page - STMicroelectronics |
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53 / 78 page ![]() STFPC320 Remote control protocols 53/78 15.3.1 RC-5 data in decoded format In the decoded form, the ADR bits followed by Start bit and Toggle Bit followed by Data bits are sent in this order for each remote control protocol. The number of bits depends on the corresponding RC protocol. The remaining empty bits are stuffed with 1’s to complete a byte-aligned data frame. Example for Philips RC-5 protocol, if the 5-bit ADDR field is “00000” and 6-bit command is “000001”, the in decoded format the data on SDA pin will be sent as follows with MSB transmitted first. S stands for Start Bit and T stands for Toggle Bit. Figure 28. RC-5 data structure in decoded format 15.3.2 RC-5 data in RAW format In the raw form, the data is sent in the same way as it is received for each RC protocol except that the header is not transmitted on SDA. So for the above example for Philips RC-5 protocol, the data on SDA pin in raw-format will be as follows: Figure 29. RC-5 data structure in raw format 0 T S 0 0 0 0 0 0 T S 0 0 0 0 0 ADR LSB X X X 1 0 0 0 0 X X X 1 0 0 0 0 MSB X X X X X X X X X X X X X X X X MSB Byte 1 Byte 2 Byte 3 LSB DAT A 1-bit Start bit 1-bit Toggle Bit 5-bit Address 6-bit Command MSB LSB MSB LSB Data word Sent first on SDA |
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