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Moteur de recherche de fiches techniques de composants électroniques |
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Moteur de recherche de fiches techniques de composants électroniques |
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MFRC522 Fiches technique(PDF) 47 Page - NXP Semiconductors |
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MFRC522 Fiches technique(HTML) 47 Page - NXP Semiconductors |
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47 / 96 page  MFRC522_33 © NXP B.V. 2009. All rights reserved. Product data sheet PUBLIC Rev. 3 — 26 October 2009 112133 47 of 96 NXP Semiconductors MFRC522 Contactless reader IC 9.3.2.4 RxModeReg register Defines the data rate during reception. Table 58. TxModeReg register bit descriptions Bit Symbol Value Description 7 TxCRCEn 1 enables CRC generation during data transmission Remark: can only be set to logic 0 at 106 kBd 6 to 4 TxSpeed[2:0] defines the bit rate during data transmission the MFRC522 handles transfer speeds up to 848 kBd 000 106 kBd 001 212 kBd 010 424 kBd 011 848 kBd 100 reserved 101 reserved 110 reserved 111 reserved 3 InvMod 1 modulation of transmitted data is inverted 2 to 0 reserved - reserved for future use Table 59. RxModeReg register (address 13h); reset value: 00h bit allocation Bit 7 6 5 4 3 2 1 0 Symbol RxCRCEn RxSpeed[2:0] RxNoErr RxMultiple reserved Access R/W D R/W R/W - Table 60. RxModeReg register bit descriptions Bit Symbol Value Description 7 RxCRCEn 1 enables the CRC calculation during reception Remark: can only be set to logic 0 at 106 kBd 6 to 4 RxSpeed[2:0] defines the bit rate while receiving data the MFRC522 handles transfer speeds up to 848 kBd 000 106 kBd 001 212 kBd 010 424 kBd 011 848 kBd 100 reserved 101 reserved 110 reserved 111 reserved 3 RxNoErr 1 an invalid received data stream (less than 4 bits received) will be ignored and the receiver remains active |
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