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RC522 Datasheet(PDF) 26 Page - NXP Semiconductors

Part # RC522
Description  Contactless Reader IC
PDF  109 Pages
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Manufacturer  NXP [NXP Semiconductors]
Direct Link  http://www.nxp.com
Logo NXP - NXP Semiconductors

RC522 Datasheet(HTML) 26 Page - NXP Semiconductors

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© NXP B.V. 2007. All rights reserved.
Product data sheet
Rev. 3.2 — 22 May 2007
26 of 109
NXP Semiconductors
MFRC522
Contactless Reader IC
9.2.2.4
RxModeReg
Defines the data rate during reception.
Table 44:
Description of TxModeReg bits
Bit
Symbol
Description
7
TxCRCEn
Set to logic 1, this bit enables the CRC generation during data
transmission.
Remark: This bit shall only be set to logic 0 at 106 kbit/s.
6 to 4
TxSpeed
Defines the bit rate while data transmission. The MFRC522 handels
transfer speeds up to 848 kbit/s.
Value
Description
000
106 kbit/s
001
212 kbit/s
010
424 kbit/s
011
848 kbit/s
100
Reserved
101
Reserved
110
Reserved
111
Reserved
3
InvMod
Set to logic 1, the modulation for transmitting data is inverted.
2 to 0
-
Reserved for future use.
Table 45:
RxModeReg register (address 13h); reset value: 00h
Bit
7
6
5
4
3
2
1
0
Symbol
RxCRCEn
RxSpeed
RxNoErr
RxMultiple
-
Access
Rights
r/w
dy
r/w
r/w
RFU
Table 46:
Description of RxModeReg bits
Bit
Symbol
Description
7
RxCRCEn
Set to logic 1, this bit enables the CRC calculation during reception.
Remark: This bit shall only be set to logic 0 at 106 kbit/s.
6 to 4
RxSpeed
Defines the bit rate while data receiving. The MFRC522 handles
transfer speeds up to 848kbit/s.
Value
Description
000
106 kbit/s
001
212 kbit/s
010
424 kbit/s
011
848 kbit/s
100
Reserved
101
Reserved
110
Reserved
111
Reserved



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