參數(shù)資料
型號: MFRC50001T
廠商: NXP Semiconductors N.V.
元件分類: 通信及網(wǎng)絡
英文描述: Highly integrated ISO-IEC 14443 A reader IC
封裝: MFRC50001T/0FE<SOT287-1 (SO32)|<<http://www.nxp.com/packages/SOT287-1.html<1<week 15, 2005,;
文件頁數(shù): 27/110頁
文件大?。?/td> 841K
代理商: MFRC50001T
MFRC500_33
All information provided in this document is subject to legal disclaimers.
NXP B.V. 2010. All rights reserved.
Product data sheet
PUBLIC
Rev. 3.3 — 15 March 2010
048033
27 of 110
NXP Semiconductors
MFRC500
Highly Integrated ISO/IEC 14443 A Reader IC
9.9 Transmitter pins TX1 and TX2
The signal on pins TX1 and TX2 is the 13.56 MHz energy carrier modulated by an
envelope signal. It can be used to drive an antenna directly, using minimal passive
components for matching and filtering (see
Section 15.1 on page 91
). To enable this, the
output circuitry is designed with a very low-impedance source resistance. The TxControl
register is used to control the TX1 and TX2 signals.
9.9.1
Configuring pins TX1 and TX2
TX1 pin configurations are described in
Table 20
.
Table 20.
TxControl register configuration
TX1RFEn
FORCE100ASK
0
1
1
1
1
TX2 pin configurations are described in
Table 21
.
Table 21.
TxControl register configuration
TX2RFEn
FORCE100ASK
0
X
1
0
Pin TX1 configurations
Envelope
TX1 signal
X
0
0
1
1
X
0
1
0
1
LOW (GND)
13.56 MHz carrier frequency modulated
13.56 MHz carrier frequency
LOW
13.56 MHz energy carrier
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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