MFRC522_(2007) Просмотр технического описания (PDF) - NXP Semiconductors.

Номер в каталоге

Компоненты Описание

производитель

MFRC522_
(Rev.:2007)

Contactless Reader IC

NXP Semiconductors. 

NXP Semiconductors

MFRC522

Contactless Reader IC

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.

9.2.2.4 RxModeReg

Defines the data rate during reception.

Table 45: RxModeReg register (address 13h); reset value: 00h

Bit

7

6

5

4

3

2

Symbol RxCRCEn

RxSpeed

RxNoErr RxMultiple

Access

r/w

Rights

dy

r/w

r/w

1

0

-

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

112132

Product data sheet

Rev. 3.2 — 22 May 2007

© NXP B.V. 2007. All rights reserved.

26 of 109

Share Link: