CLRC663 datasheet(70/177 Pages) NXP

70 / 177 page

NXP Semiconductors

CLRC663

High performance multi-protocol NFC frontend CLRC663 and CLRC663 plus

Bit

Symbol

Description

ProtErr

A protocol error has occurred. A protocol error can be a wrong stop bit, a missing or wrong ISO/

IEC14443B EOF or SOF or a wrong number of received data bytes. When a protocol error is

detected, data reception is stopped.

Note: ProtErr is automatically cleared at start of a receive or transceive command. In case of a

transceive command, it is cleared at the start of the receiving phase ("Wait for data" state).

Note: When a protocol error occurs the last received data byte is not written into the FIFO.

IntegErr

A data integrity error has been detected. Possible cause can be a wrong parity or a wrong CRC.

In case of a data integrity error the reception is continued.

Note: IntegErr is automatically cleared at start of a Receive or Transceive command. In case of a

Transceive command, it is cleared at the start of the receiving phase ("Wait for data" state).

Note: If the NoColl bit is set, also a collision is setting the IntegErr.

Table 72. Error bits...continued

9.6.2 Status

Status register.

Bit

Symbol

Crypto1On

ComState

Access

rights

RFU

Table 73. Status register (address 0Bh)

Bit

Symbol

Description

7 to 6

RFU

Crypto1On

Indicates if the MIFARE Classic Crypto is on. Clearing this bit is switching the MIFARE Cassic

Crypto off. The bit can only be set by the MFAuthent command.

4 to 3

RFU

ComState shows the status of the transmitter and receiver state machine:

000b ... Idle

001b ... TxWait

011b ... Transmitting

101b ... RxWait

110b ... Wait for data

111b ... Receiving

2 to 0

ComState

100b ... not used

Table 74. Status bits

9.6.3 RxBitCtrl

Receiver control register.

CLRC663

All information provided in this document is subject to legal disclaimers.

Product data sheet

Rev. 5.3 — 3 January 2024

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