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參數(shù)資料
| 型號： | MFRC53101T |
| 廠商： | NXP Semiconductors N.V. |
| 元件分類： | 通信及網(wǎng)絡(luò) |
| 英文描述： | ISO-IEC 14443 reader IC |
| 封裝： | MFRC53101T/0FE<SOT287-1 (SO32)|<<http://www.nxp.com/packages/SOT287-1.html<1<week 51, 2004,;MFRC53101T/0FE<SOT287-1 (SO32)|<<http://www.nxp.com/packages/SOT287-1.html< |
| 文件頁數(shù)： | 30/116頁 |
| 文件大?。?/td> | 862K |
| 代理商： | MFRC53101T |
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MFRC531_34
NXP B.V. 2010. All rights reserved.
Product data sheet
PUBLIC
Rev. 3.4 — 26 January 2010
056634
30 of 116
NXP Semiconductors
MFRC531
ISO/IEC 14443 reader IC
Table 25.
TxControl register configuration
TX2RFEn
FORCE100ASK
0
X
1
0
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
Ω
and
100
Ω
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
Ω
and 100
Ω
using the ModConductance register GsCfgMod[5:0] bits.
The values are relative to the reference resistance (R
S(ref)
) which is measured during the
production test and stored in the MFRC531 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 92
.
Pin TX2 configurations
Envelope
TX2 signal
TX2CW
X
0
TX2Inv
X
0
X
0
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
1
1
0
0
0
0
0
1
1
0
1
0
0
1
1
1
1
0
0
1
1
0
1
X
X
1
1
1
1
1
1
1
1
0
0
0
0
0
0
1
1
0
1
0
1
1
1
1
1
1
1
0
1
X
X
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