mfrc522 NXP Semiconductors, mfrc522 Datasheet - Page 26

• Manufacturer Part Number: mfrc522
• Description: Contactless Reader Ic
• Manufacturer: NXP Semiconductors

NXP Semiconductors
112132
Product data sheet
9.2.2.4 RxModeReg
Table 44:
Defines the data rate during reception.
Table 45:
Table 46:
Bit
7
6 to 4
3
2 to 0
Bit
7
6 to 4
Symbol RxCRCEn
Access
Rights
Bit
Symbol
TxCRCEn
TxSpeed
InvMod
-
Symbol
RxCRCEn
RxSpeed
Description of TxModeReg bits
RxModeReg register (address 13h); reset value: 00h
Description of RxModeReg bits
r/w
7
Description
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.
Defines the bit rate while data transmission. The MFRC522 handels
transfer speeds up to 848 kbit/s.
Value
000
001
010
011
100
101
110
111
Set to logic 1, the modulation for transmitting data is inverted.
Reserved for future use.
Rev. 3.2 — 22 May 2007
Description
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.
Defines the bit rate while data receiving. The MFRC522 handles
transfer speeds up to 848kbit/s.
Value
000
001
010
011
100
101
110
111
6
RxSpeed
Description
106 kbit/s
212 kbit/s
424 kbit/s
848 kbit/s
Reserved
Reserved
Reserved
Reserved
dy
5
Description
106 kbit/s
212 kbit/s
424 kbit/s
848 kbit/s
Reserved
Reserved
Reserved
Reserved
4
RxNoErr
r/w
3
RxMultiple
r/w
2
Contactless Reader IC
MFRC522
© NXP B.V. 2007. All rights reserved.
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