參數(shù)資料
型號： CLRC63201T
廠商： NXP Semiconductors N.V.
元件分類： 通信及網(wǎng)絡(luò)
英文描述： Multiple protocol contactless reader IC (MIFARE-I-CODE1)
封裝： CLRC63201T/0FE<SOT287-1 (SO32)|<<http://www.nxp.com/packages/SOT287-1.html<1<week 5, 2005,;
文件頁數(shù)： 55/126頁
文件大小： 719K
代理商： CLRC63201T
CLRC632_35
NXP B.V. 2009. All rights reserved.
Product data sheet
PUBLIC
Rev. 3.5 — 10 November 2009
073935
34 of 126
NXP Semiconductors
CLRC632
Multiple protocol contactless reader IC (MIFARE/I-CODE1)
9.9.3.2
Calculating the relative source resistance
The reference source resistance RS(ref) can be calculated using Equation 6.
(6)
The reference source resistance (RS(ref)) during the modulation phase can be calculated
using ModConductance register’s GsCfgMod[5:0].
9.9.3.3
Calculating the effective source resistance
Wiring resistance (RS(wire)): Wiring and bonding add a constant offset to the driver
resistance that is relevant when pins TX1 and TX2 are switched to low-impedance. The
additional resistance for pin TX1 (RS(wire)TX1) can be set approximately as shown in
(7)
Effective resistance (RSx): The source resistances of the driver transistors (RsMaxP
byte) read from the Product Information Field (see Section 9.2.1 on page 13) are
measured during the production test with CwConductance register’s
GsCfgCW[5:0] = 01h.
To calculate the driver resistance for a specic value set in GsCfgMod[5:0], use
(8)
9.9.4 Pulse width
The envelope carries the data signal information that is transmitted to the card. It is an
encoded data signal based on the Miller code. In addition, each pause of the Miller
encoded signal is again encoded as a pulse of a xed width. The width of the pulse is
adjusted using the ModWidth register. The pulse width (tw) is calculated using Equation 9
where the frequency constant (fclk) = 13.56 MHz.
(9)
9.10 Receiver circuitry
The CLRC632 uses an integrated quadrature demodulation circuit enabling it to detect an
ISO/IEC 14443 A or ISO/IEC 14443 B compliant subcarrier signal on pin RX.
ISO/IEC 14443 A subcarrier signal: dened as a Manchester coded ASK modulated
signal
ISO/IEC 14443 B subcarrier signal: dened as an NRZ-L coded BPSK modulated
ISO/IEC 14443 B subcarrier signal
R
Sref
()
1
MANT
GsCfgCW
77
40
------
EXP
GsCfgCW
---------------------------------------------------------------------------------
=
R
S wire
()TX1
500 m
≈
R
Sx
R
Sref
()maxP
R
S wire
()TX1
–
() R
Srel
()
R
Swire
()TX1
+
=
t
w
2
ModWidth
1
+
f
c
-------------------------------------
=
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
CLRC63201T/0FE 制造商:NXP Semiconductors 功能描述:
CLRC63201T/0FE,112 功能描述:RFID應(yīng)答器 I.CODE HS READER 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(fēng)格:SMD/SMT 封裝 / 箱體: 封裝:Reel
CLRC63201T/0FE,118 制造商:NXP Semiconductors 功能描述:Interface Misc
CLRC63201T/0FE112 制造商:NXP Semiconductors 功能描述:CNTCLESS RC 5V ISO14443 + ISO15693
CLRC663 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Contactless reader IC
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