CLRC632 Datasheet, PDF (32/163 Pages) NXP Semiconductors – Multiple Protocol Contactless Reader IC

Philips Semiconductors
Multiple Protocol Contactless Reader IC
Product Specification Rev. 3.0; May 2003
CL RC632
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
7
0
Access
r
Rights
6
KeyErr
r
5
AccessErr
r
4
FIFOOvfl
r
3
CRCErr
r
2
FramingErr
r
1
ParityErr
r
0
CollErr
r
Description of the bits
Bit
Symbol
7
0
6
KeyErr
5
AccessErr
4
FIFOOvfl
3
CRCErr
2
FramingErr
1
ParityErr
0
CollErr
Function
Reserved for future use.
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.
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.
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.
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.
This bit is set to 1, if the SOF is incorrect. It is cleared automatically at receiver
start (that is during the state PrepareRx).
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).
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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