CLRC63201TSLASH0FE datasheet(32/163 Pages) PHILIPS

32 / 163 page

Philips Semiconductors

Product Specification Rev. 3.0; May 2003

Multiple Protocol Contactless Reader IC

CL RC632

Confidential

5.2.2.3

ErrorFlag Register

Error flags showing the error status of the last executed command.

Name: ErrorFlag

Address: 0x0A

Reset value: 01000000, 0x40

KeyErr

AccessErr

FIFOOvfl

CRCErr

FramingErr

ParityErr

CollErr

Access

Rights

Description of the bits

Bit

Symbol

Function

Reserved for future use.

KeyErr

This bit is set to 1, if the LoadKeyE2 or the LoadKey Command recognises, that

the input data is not coded according to the Key format definition.

This bit is set to 0 starting the LoadkeyE2 or the LoadKey command.

AccessErr

This bit is set to 1, if the access rights to the E²PROM are violated.

This bit is set to 0 starting an E²PROM related command.

FIFOOvfl

This bit is set to 1, if the µ-Processor or a CL RC632’s internal state machine (e.g.

receiver) tries to write data into the FIFO buffer although the FIFO buffer is

already full.

CRCErr

This bit is set to 1, if RxCRCEn is set and the CRC fails. It is cleared to 0

automatically at receiver start phase during the state PrepareRx.

FramingErr

This bit is set to 1, if the SOF is incorrect. It is cleared automatically at receiver

start (that is during the state PrepareRx).

ParityErr

This bit is set to 1, if the parity check has failed. It is cleared automatically at

receiver start (that is during the state PrepareRx).

CollErr

This bit is set to 1, if a bit-collision is detected. It is cleared automatically at

receiver start (that is during the state PrepareRx).

Note: only valid for communication according to ISO14443 A.

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