CLRC663 Datasheet, PDF (113/132 Pages) NXP Semiconductors – Contactless reader IC

NXP Semiconductors
CLRC663
Contactless reader IC
9.17.6 RxMod
Table 235. RxMod register (address 5Dh)
Bit
7
6
5
4
3
2
1
Symbol
RFU
RFU
PreFilter
RectFilter SyncHigh CorrInv
FSK
Access
-
-
r/w
r/w
r/w
r/w
r/w
rights
0
BPSK
r/w
Table 236. RxMod bits
Bit
Symbol
7 to 6 -
5
PreFilter
4
RectFilter
3
SyncHigh
2
CorrInv
1
FSK
0
BPSK
Description
RFU
If set 4 samples are combined to one data. (average)
If set, the ADC-values are changed to a more rectangular wave shape
Defines if the bit grid is fixed at maximum (1) or at minimum (0) value
of the correlation.
Defines a logical for Manchester coding:
0: subcarrier / no subcarrier
If set to 1, the demodulation scheme is set to FSK
If set to 1, the modulation scheme is BPSK
9.17.7 RxCorr
Table 237. RxCorr register (address 5Eh)
Bit
7
6
5
4
Symbol
CorrFreq
CorrSpeed
Access
r/w
r/w
r/w
r/w
rights
3
2
CorrLen
r/w
1
0
RFU
-
Table 238. RxCorr bits
Bit
Symbol
7, 6
CorrFreq
5, 4
CorrSpeed
3
CorrLen
2 to 0 RFU
Description
0h - 212 kHz
1h - 424 kHz
2h - 848 kHz
3h - 848 kHz
Defines the number of clocks used for one correlation.
0h - ISO/IEC 14443
1h - ICODE 53 kBd, FeliCa 424 kBd
2h - ICODE 26 kBd, FeliCa 212 kBd
3h - RFU
Defines the length of the correlation data. (64 or 32 values)
If set the lengths of the correlation data is 32 values. (ISO/IEC 18000-3
mode 3/ EPC Class-1HF, 2 Pulse Manchester 848 kHz subcarrier)
-
CLRC663
Product data sheet
COMPANY PUBLIC
All information provided in this document is subject to legal disclaimers.
Rev. 3.3 — 3 April 2012
171133
© NXP B.V. 2012. All rights reserved.
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