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MFRC522 数据表(PDF) 52 Page - NXP Semiconductors |
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MFRC522 数据表(HTML) 52 Page - NXP Semiconductors |
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52 / 96 page  MFRC522_33 © NXP B.V. 2009. All rights reserved. Product data sheet PUBLIC Rev. 3 — 26 October 2009 112133 52 of 96 NXP Semiconductors MFRC522 Contactless reader IC 9.3.2.12 Reserved register 1Bh Functionality is reserved for future use. 9.3.2.13 MfTxReg register Controls some MIFARE communication transmit parameters. Table 73. Reserved register (address 1Ah); reset value: 00h bit allocation Bit 7 6 5 4 3 2 1 0 Symbol reserved Access - Table 74. Reserved register bit descriptions Bit Symbol Description 7 to 0 reserved reserved for future use Table 75. Reserved register (address 1Bh); reset value: 00h bit allocation Bit 7 6 5 4 3 2 1 0 Symbol reserved Access - Table 76. Reserved register bit descriptions Bit Symbol Description 7 to 0 reserved reserved for future use Table 77. MfTxReg register (address 1Ch); reset value: 62h bit allocation Bit 7 6 5 4 3 2 1 0 Symbol reserved TxWait[1:0] Access - R/W Table 78. MfTxReg register bit descriptions Bit Symbol Description 7 to 2 reserved reserved for future use 1 to 0 TxWait defines the additional response time 7 bits are added to the value of the register bit by default |
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