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CLRC663 датащи(PDF) 84 Page - NXP Semiconductors |
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CLRC663 датащи(HTML) 84 Page - NXP Semiconductors |
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84 / 177 page ![]() NXP Semiconductors CLRC663 High performance multi-protocol NFC frontend CLRC663 and CLRC663 plus Bit Symbol Description 7 to 6 set_cw_amplitude Allows reducing the output amplitude of the transmitter by a fix value. Four different preset values that are subtracted from TVDD can be selected: 0: TVDD -100 mV 1: TVDD -250 mV 2: TVDD -500 mV 3: TVDD -1000 mV 5 RFU - 4 to 0 set_residual_ carrier Set the residual carrier percentage. refer to Section 8.6.2. Table 134. TxAmp bits 9.8.3 TxCon Bit 7 6 5 4 3 2 1 0 Symbol OvershootT2 CwMax TxInv TxSel Access rights r/w r/w r/w r/w Table 135. TxCon register (address 2Ah) Bit Symbol Description 7 to 4 OvershootT2 Specifies the length (number of carrier clocks) of the additional modulation for overshoot prevention. Refer to Section 8.6.2.1. 3 Cwmax Set amplitude of continuous wave carrier to the maximum. If set, set_cw_amplitude in Register TxAmp has no influence on the continuous amplitude. 2 TxInv If set, the resulting modulation signal defined by TxSel is inverted 1 to 0 TxSel Defines which signal is used as source for modulation 00b ... no modulation 01b ... TxEnvelope 10b ... SigIn 11b ... RFU Table 136. TxCon bits 9.8.4 Txl Bit 7 6 5 4 3 2 1 0 Symbol OvershootT1 tx_set_iLoad Access rights r/w r/w Table 137. Txl register (address 2Bh) CLRC663 All information provided in this document is subject to legal disclaimers. © 2024 NXP B.V. All rights reserved. Product data sheet Rev. 5.3 — 3 January 2024 84 / 177 |
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