CLRC663 Datasheet, PDF (105/132 Pages) NXP Semiconductors – Contactless reader IC

NXP Semiconductors
CLRC663
Contactless reader IC
Table 200. TxDataMod bits
Bit
Symbol
Description
7
Framestep If set to 1, at every start of transmission, each byte of data is sent in a
separate frame. SOF and EOF is appended to the data byte according
to the framing settings. After one byte is transmitted, the TxEncoder
waits for a new start trigger to continue with the next byte (trigger is
generated automatically). If set to 0, transmission is done in the used
way, where after a start trigger all data bytes are sent and the framing
is done for the complete data stream only once.
6
DMillerEn
If set, pulse modulation is applied according to modified miller code.
Note: This bit is intended to be set if DPulseType is 1h
5 to 4 DPulseType Specifies which type of pulse modulation is selected.
0h - no pulse modulation
1h - pulse starts at beginning of bit
2h - pulse starts at beginning of second bit half
3h - pulse starts at beginning of third bit quarter
Note: If DMillerEn is set, DPulseType must be set to 1h
3
DInvert
If set the envelope of data is inverted.
2 to 0
DEnvType
Specifies the type of envelope used for transmission of data packets.
The selected envelope type is applied to the pseudo bit stream.
0h - Direct output
1h - Manchester code
2h - Manchester code with subcarrier
3h - BPSK
4h - RZ (pulse of half bit length at beginning of second half of bit)
5h - RZ (pulse of half bit length at beginning of bit)
6h - RFU
7h - RFU
9.16.4 TxSymFreq
Table 201. TxSymFreq (address 4Ch)
Bit
7
6
Symbol
S32SCFreq
Access
r/w
rights
5
S32BFreq
r/w
4
3
2
1
0
S10SCFreq
S10BFreq
r/w
r/w
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.
105 of 132