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MFRC522 数据表(PDF) 47 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) 47 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
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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