MFRC52201HN1/TRAYB NXP [NXP Semiconductors], MFRC52201HN1/TRAYB Datasheet - Page 46

• Manufacturer Part Number: MFRC52201HN1/TRAYB
• Description: Contactless reader IC
• Manufacturer: NXP [NXP Semiconductors]

NXP Semiconductors
MFRC522_33
Product data sheet
PUBLIC
9.3.2.2 ModeReg register
9.3.2.3 TxModeReg register
Defines general mode settings for transmitting and receiving.
Table 55.
Table 56.
Defines the data rate during transmission.
Table 57.
Bit
Symbol
Access
Bit
7
6
5
4
3
2
1 to 0
Bit
Symbol
Access
MSBFirst
reserved
TxWaitRF
reserved
PolMFin
reserved
CRCPreset
Symbol
[1:0]
TxCRCEn
MSBFirst reserved TxWaitRF reserved
ModeReg register (address 11h); reset value: 3Fh bit allocation
ModeReg register bit descriptions
TxModeReg register (address 12h); reset value: 00h bit allocation
R/W
R/W
7
7
Value
1
-
1
-
1
0
-
00
01
10
11
Rev. 3 — 26 October 2009
6
-
6
TxSpeed[2:0]
Description
CRC coprocessor calculates the CRC with MSB first
in the CRCResultReg register the values for the
CRCResultMSB[7:0] bits and the CRCResultLSB[7:0] bits are bit
reversed
Remark: during RF communication this bit is ignored
reserved for future use
transmitter can only be started if an RF field is generated
reserved for future use
defines the polarity of pin MFIN
Remark: the internal envelope signal is encoded active LOW,
changing this bit generates a MFinActIRq event
polarity of pin MFIN is active HIGH
polarity of pin MFIN is active LOW
reserved for future use
defines the preset value for the CRC coprocessor for the CalcCRC
command
Remark: during any communication, the preset values are
selected automatically according to the definition of bits in the
RxModeReg and TxModeReg registers
112133
0000h
6363h
A671h
FFFFh
R/W
5
D
5
4
4
-
PolMFin
InvMod
R/W
R/W
3
3
reserved
2
2
-
Contactless reader IC
MFRC522
reserved
© NXP B.V. 2009. All rights reserved.
CRCPreset[1:0]
1
1
-
R/W
46 of 96
0
0