NXP Semiconductors PN7462 series User Manual page 168

NXP Semiconductors
Bit Symbol
0 RX_PARITY_ENABL
E
Table 206. CLIF_RX_STATUS_REG register (address 0060h)
* = reset value
Bit Symbol
31 RESERVED
30:24 RX_COLL_POS
23 RX_WRITE_ERROR
22 RX_LATENCY_ERR
OR
21 RX_BUFFER_OVFL_
ERROR
20 RX_CL_ERROR
19 RX_LEN_ERROR
18 RX_COLLISION_DET
ECTED
17 RX_PROTOCOL_ER
ROR
UM10858
User manual
COMPANY PUBLIC
Access Value
1
D 0*, 1
Access Value
R 0
R 0* - 7Fh
R 0*, 1
R 0*, 1
R 0*, 1
R 0*, 1
R 0*, 1
R 0*, 1
R 0*, 1
All information provided in this document is subject to legal disclaimers.
Rev. 1.4 — 14 May 2018
314514
PN7462 family HW user manual
Description
Odd parity calculation is used
If set to 1, a parity-bit for each byte is expected, will be
extracted from data stream and checked for correctness. In
case the parity-bit is incorrect, the
RX_DATA_INTEGRITY_ERROR flag is set.
Nevertheless, the reception is continued.
Note: This bit is set by the mod-detector if automatic mode
detection is enabled and ISO14443A communication is
detected.
Description
Reserved
These bits show the bit position of the first detected collision
in a received frame (only data bits are interpreted).
Note: These bits shall only be interpreted in passive
communication mode at 106 kbit/s or reader/writer mode
supporting ISO14443A and MIFARE ICs or ICODE SLIX
reader/ writer mode if bit CollPosValid is set to 1.
Note: If RX_ALIGN is set to a value different to 0, this value
is included in the RX_COLL_POS.
This error flag is set to 1, if for an ongoing reception data is
not copied to RAM in time (BMA encountered write error)
and therefor the reception is aborted
This error flag is set to 1, if for an ongoing reception data is
not copied to RAM in time (BMA latency to big) and therefor
the reception is aborted
This flag is set to 1 when the number of received bytes
exceeds the size of the RXBuffer
General contactless error, is a combination of data integrity,
protocol and collision error
This flag is set to 1, if RXMultiple is activate and the LEN
byte indicates more than 28 bytes
This flag is set to 1, when a collision has accrued. The
position of the first collision is shown in the register
RX_COLLPOS
This flag is set to 1, when a protocol error has accrued. A
protocol error can be a wrong stop bit, a missing or wrong
ISO14443B EOF or SOF or a wrong number of received
data bytes.
Note: When a protocol error is detected, data reception is
stopped.
Note: The flag is automatically cleared at start of next
reception.
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