CLRC63201T View Datasheet(PDF) - NXP Semiconductors.
Part Name
Description
MFG CO.
'CLRC63201T' PDF : 127 Pages View PDF
NXP Semiconductors
CLRC632
Standard multi-protocol reader solution
Table 27. Pin TX2 configurations
TxControl register configuration
TX2RFEn FORCE100ASK TX2CW
0
X
X
1
0
0
1
0
0
1
0
0
1
0
0
1
0
1
1
0
1
1
1
0
1
1
0
1
1
0
1
1
0
1
1
1
1
1
1
TX2Inv
X
0
0
1
1
0
1
0
0
1
1
0
1
Envelope
X
0
1
0
1
X
X
0
1
0
1
X
X
TX2 signal
LOW
13.56 MHz carrier frequency
modulated
13.56 MHz carrier frequency
13.56 MHz carrier frequency
modulated, 180 phase-shift
relative to TX1
13.56 MHz carrier frequency,
180 phase-shift relative to TX1
13.56 MHz carrier frequency
13.56 MHz carrier frequency,
180 phase-shift relative to TX1
LOW
13.56 MHz carrier frequency
HIGH
13.56 MHz carrier frequency,
180 phase-shift relative to TX1
13.56 MHz carrier frequency
13.56 MHz carrier frequency,
180 phase-shift relative to TX1
9.9.2 Antenna operating distance versus power consumption
Using different antenna matching circuits (by varying the supply voltage on the antenna
driver supply pin TVDD), it is possible to find the trade-off between maximum effective
operating distance and power consumption. Different antenna matching circuits are
described in the Application note “MIFARE Design of MFRC500 Matching Circuit and
Antennas”.
9.9.3 Antenna driver output source resistance
The output source conductance of pins TX1 and TX2 can be adjusted between 1 and
100 using the CwConductance register GsCfgCW[5:0] bits.
The output source conductance of pins TX1 and TX2 during the modulation phase can be
adjusted between 1 and 100 using the ModConductance register GsCfgMod[5:0] bits.
The values are relative to the reference resistance (RS(ref)) which is measured during the
production test and stored in the CLRC632 EEPROM. It can be read from the product
information field (see Section 9.2.1 on page 13). The electrical specification can be found
in Section 13.3.3 on page 101.
CLRC632
Product data sheet
COMPANY PUBLIC
All information provided in this document is subject to legal disclaimers.
Rev. 3.7 — 27 February 2014
073937
© NXP Semiconductors N.V. 2014. All rights reserved.
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