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CLRC663 Datasheet(PDF) 70 Page - NXP Semiconductors

Part No. CLRC663
Description  Contactless reader IC
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Maker  NXP [NXP Semiconductors]
Homepage  http://www.nxp.com
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CLRC663 Datasheet(HTML) 70 Page - NXP Semiconductors

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CLRC663
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2012. All rights reserved.
Product data sheet
COMPANY PUBLIC
Rev. 3.3 — 3 April 2012
171133
70 of 132
NXP Semiconductors
CLRC663
Contactless reader IC
9.6.2 Status
Status register.
Table 68.
Error bits
Bit
Symbol
Description
7
EE_Err
An error appeared during the last EEPROM command. For
details see the descriptions of the EEPROM commands
6
FIFOWrErr Data was written into the FIFO, during a transmission of a possible CRC,
during "RxWait", "Wait for data" or "Receiving" state, or during an
authentication command. The Flag is cleared when a new CL command is
started. If RxMultiple is active, the flag is cleared after the error flags have
been written to the FIFO.
5
FIFOOvl
Data is written into the FIFO when it is already full. The data that is already in
the FIFO will remain untouched. All data that is written to the FIFO after this
Flag is set to 1 will be ignored.
4Min
FrameErr
A valid SOF was received, but afterwards less then 4 bits of data were
received.
Note: Frames with less than 4 bits of data are automatically discarded and the
RxDecoder stays enabled. Furthermore no RxIrq is set. The same is valid for
less than 3 Bytes if the EMD suppression is activated
Note: MinFrameErr is automatically cleared at the 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)
3
NoDataErr
Data should be sent, but no data is in FIFO
2
CollDet
A collision has occurred. The position of the first collision is shown in the
register RxColl.
Note: CollDet is automatically cleared at the 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 a collision is part of the defined EOF symbol, CollDet is not set to 1.
1
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.
0
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.


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