參數(shù)資料
型號： MFRC52201HN1
廠商： NXP Semiconductors N.V.
元件分類： 通信及網(wǎng)絡
英文描述： Contactless reader IC
封裝： MFRC52201HN1<SOT617-1 (HVQFN32)|<<http://www.nxp.com/packages/SOT617-1.html<1<Always Pb-free,;MFRC52201HN1<SOT617-1 (HVQFN32)|<<http://www.nxp.com/packages/SOT617-1.html&
文件頁數(shù)： 25/92頁
文件大?。?/td> 691K
代理商： MFRC52201HN1
MFRC522_35
All information provided in this document is subject to legal disclaimers.
NXP B.V. 2010. All rights reserved.
Product data sheet
PUBLIC
Rev. 3.5 — 21 June 2010
112135
25 of 92
NXP Semiconductors
MFRC522
Contactless reader IC
8.2.3
Serial data switch
Two main blocks are implemented in the MFRC522. The digital block comprises the state
machines, encoder/decoder logic. The analog block comprises the modulator and
antenna drivers, the receiver and amplifiers. It is possible for the interface between these
two blocks to be configured so that the interfacing signals are routed to pins MFIN and
MFOUT.
This topology allows the analog block of the MFRC522 to be connected to the digital block
of another device.
The serial signal switch is controlled by the TxSelReg and RxSelReg registers.
Figure 20
shows the serial data switch for p-driver TX1 and TX2.
8.2.4
MFIN and MFOUT interface support
The MFRC522 is divided into a digital circuit block and an analog circuit block. The digital
block contains state machines, encoder and decoder logic and so on. The analog block
contains the modulator and antenna drivers, receiver and amplifiers. The interface
between these two blocks can be configured so that the interfacing signals can be routed
to pins MFIN and MFOUT; see
Figure 21 on page 26
. This configuration is implemented
using TxSelReg register’s MFOutSel[3:0] and DriverSel[1:0] bits and RxSelReg register’s
UARTSel[1:0] bits.
This topology allows some parts of the analog block to be connected to the digital block of
another device.
Switch MFOutSel in the TxSelReg register can be used to measure MIFARE and
ISO/IEC14443 A related signals. This is especially important during the design-in phase
or for test purposes as it enables checking of the transmitted and received data.
The most important use of pins MFIN and MFOUT is found in the active antenna concept.
An external active antenna circuit can be connected to the MFRC522’s digital block.
Switch MFOutSel must be configured so that the internal Miller encoded signal is sent to
pin MFOUT (MFOutSel = 100b). UARTSel[1:0] must be configured to receive a
Manchester signal with subcarrier from pin MFIN (UARTSel[1:0] = 01).
It is possible to connect a passive antenna to pins TX1, TX2 and RX (using the
appropriate filter and matching circuit) and an active antenna to pins MFOUT and MFIN at
the same time. In this configuration, two RF circuits can be driven (one after another) by a
single host processor.
Fig 20. Serial data switch for p-driver TX1 and TX2
001aak593
INTERNAL
CODER
INVERT IF
InvMod = 1
DriverSel[1:0]
00
01
10
11
3-state
to driver TX1 and TX2
0 = impedance = modulated
1 = impedance = CW
1
INVERT IF
PolMFin = 0
MFIN
envelope
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相關代理商/技術參數(shù)
參數(shù)描述
MFRC52201HN1,115 功能描述:RFID應答器 RoHS:否 制造商:Murata 存儲容量:512 bit 工作溫度范圍:- 40 C to + 85 C 安裝風格:SMD/SMT 封裝 / 箱體: 封裝:Reel
MFRC52201HN1,118 功能描述:RFID應答器 RoHS:否 制造商:Murata 存儲容量:512 bit 工作溫度范圍:- 40 C to + 85 C 安裝風格:SMD/SMT 封裝 / 箱體: 封裝:Reel
MFRC52201HN1,151 功能描述:RFID應答器 Contactless Reader 32-Pin RoHS:否 制造商:Murata 存儲容量:512 bit 工作溫度范圍:- 40 C to + 85 C 安裝風格:SMD/SMT 封裝 / 箱體: 封裝:Reel
MFRC52201HN1,157 功能描述:RFID應答器 CL READER IC’S RoHS:否 制造商:Murata 存儲容量:512 bit 工作溫度范圍:- 40 C to + 85 C 安裝風格:SMD/SMT 封裝 / 箱體: 封裝:Reel
MFRC52201HN1/TRAYB 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Contactless reader IC
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