CLRC63201TSLASH0FE datasheet(52/163 Pages) PHILIPS

52 / 163 page

Philips Semiconductors

Product Specification Rev. 3.0; May 2003

Multiple Protocol Contactless Reader IC

CL RC632

Confidential

5.2.5.3

ChannelRedundancy Register

Selects kind and mode of checking the data integrity on the RF-channel.

Name: ChannelRedundancy

Address: 0x22

Reset value: 00000011, 0x03

CRC

3309

CRC8

RxCRCEn

TxCRCEn

ParityOdd

ParityEn

Access

Rights

r/w

Description of the bits

Bit

Symbol

Function

7-6

This value shall not be changed

CRC3309

If set to 1, CRC-calculation is done according ISO/IEC3309 (ISO14443B) and ISO

15693.

Note: For usage according to ISO14443A this bit has to be 0.

For usage according to I•CODE1 this bit has to be 0.

CRC8

If set to 1, an 8-bit CRC is calculated.

If set to 0, a 16-bit CRC is calculated.

RxCRCEn

If set to 1, the last byte(s) of a received frame is/are interpreted as CRC byte/s.

If the CRC itself is correct the CRC byte(s) is/are not passed to the FIFO.

In case of an error, the CRCErr flag is set.

If set to 0, no CRC is expected.

TxCRCEn

If set to 1, a CRC is calculated over the transmitted data and the CRC byte(s) are

appended to the data stream.

If set to 0, no CRC is transmitted.

ParityOdd

If set to 1, an odd parity is generated or expected, respectively.

If set to 0 an even parity is generated or expected, respectively.

Note: For usage according to ISO14443-A this bit has to be 1.

ParityEn

If set to 1, a parity bit is inserted in the transmitted data stream after each byte

and expected in the received data stream after each byte (MIFARE

®, ISO14443A)

If set to 0, no parity bit is inserted or expected (ISO14443B)

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