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MFRC522 数据表(PDF) 64 Page - NXP Semiconductors

部件名 MFRC522
功能描述  Contactless reader IC
PDF  96 Pages
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制造商  NXP [NXP Semiconductors]
网页  http://www.nxp.com
标志 NXP - NXP Semiconductors

MFRC522 数据表(HTML) 64 Page - NXP Semiconductors

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MFRC522_33
© NXP B.V. 2009. All rights reserved.
Product data sheet
PUBLIC
Rev. 3 — 26 October 2009
112133
64 of 96
NXP Semiconductors
MFRC522
Contactless reader IC
[1]
Remark: Current source output; the use of 1 k
Ω pull-down resistor on AUXn is recommended.
Table 134. AnalogTestReg register bit descriptions
Bit
Symbol
Value Description
7 to 4 AnalogSelAux1
[3:0]
controls pin AUX1
0000
3-state
0001
output of TestDAC1 (AUX1), output of TestDAC2 (AUX2)[1]
0010
test signal Corr1[1]
0011
reserved
0100
DAC: test signal MinLevel[1]
0101
DAC: test signal ADC_I[1]
0110
DAC: test signal ADC_Q[1]
0111
reserved
1000
reserved, test signal for production test[1]
1001
reserved
1010
HIGH
1011
LOW
1100
TxActive:
at 106 kBd: HIGH during Start bit, Data bit, Parity and CRC
at 212 kBd: 424 kBd and 848 kBd: HIGH during data and
CRC
1101
RxActive:
at 106 kBd: HIGH during Data bit, Parity and CRC
at 212 kBd: 424 kBd and 848 kBd: HIGH during data and
CRC
1110
subcarrier detected:
106 kBd: not applicable
212 kBd: 424 kBd and 848 kBd: HIGH during last part of
data and CRC
1111
test bus bit as defined by the TestSel1Reg register’s
TstBusBitSel[2:0] bits
Remark: all test signals are described in Section 16.1 on
page 79
3 to 0 AnalogSelAux2
[3:0]
-
controls pin AUX2 (see bit descriptions for AUX1)



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