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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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CLRC63201T/0FE датащи(PDF) 116 Page - NXP Semiconductors |
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CLRC63201T/0FE датащи(HTML) 116 Page - NXP Semiconductors |
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116 / 163 page  Philips Semiconductors Product Specification Rev. 3.0; May 2003 Multiple Protocol Contactless Reader IC CL RC632 116 Confidential Depending on the setting of bit TxCRCEn in the ChannelRedundancy-Register a CRC is calculated and appended to the data stream. The CRC is calculated according the settings in the ChannelRedundancy Register. Parity generation is handled according the settings in the ChannelRedundancy-Register (bits ParityEn and ParityOdd). 18.4.1.3 Transmission of Bit Oriented Frames The transmitter may be configured to send an incomplete last byte. To achieve this TxLastBits has to be set to a value unequal zero. This is shown in the figure below. The figure shows the data stream if ParityEn is set in ChannelRedundancy-Register. All fully transmitted bytes are followed by a parity check bit, but the incomplete byte is not followed by a parity check bit. After transmission, TxLastBits is cleared automatically. Note: If TxLastBits is not equal to zero CRC generation has to be disabled. This is done by clearing the bit TxCRCEn in the ChannelRedundancy Register. Bit7 Bit0 SOF P Bit7 Bit0 P EOF Bit7 Bit0 SOF PBit6 Bit0 EOF Bit7 Bit0 SOF PBit0 EOF TxLastBits = 0 TxLastBits = 7 TxLastBits = 1 Figure 18-1: Transmitting Bit Oriented Frames |
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