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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)： | 101/116頁 |
| 文件大小： | 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
101 of 116
NXP Semiconductors
MFRC531
ISO/IEC 14443 reader IC
15.2 Test signals
The MFRC531 allows different kinds of signal measurements. These measurements can
be used to check the internally generated and received signals using the serial signal
switch as described in
Section 9.11 on page 35
.
In addition, the MFRC531 enables users to select between:
internal analog signals for measurement on pin AUX
internal digital signals for observation on pin MFOUT (based on register selections)
These measurements can be helpful during the design-in phase to optimize the receiver’s
behavior or for test purposes.
15.2.1
Measurements using the serial signal switch
Using the serial signal switch on pin MFOUT, data is observed that is sent to the card or
received from the card.
Table 164
gives an overview of the different signals available.
Table 164. Signal routed to pin MFOUT
SignalToMFOUT
0
0
0
0
Remark:
The routing of the Manchester or the Manchester with subcarrier signal to pin
MFOUT is only possible at 106 kBd based on ISO/IEC 14443 A.
15.2.1.1
TX control
Figure 25
shows as an example of an ISO/IEC 14443 A communication.
The signal is measured on pin MFOUT using the serial signal switch to control the data
sent to the card. Setting the flag MFOUTSelect[2:0] = 010 sends the data to the card
coded as NRZ. Setting MFOUTSelect[2:0] = 001 shows the data as a Miller coded signal.
The RFOut signal is measured directly on the antenna and gives the RF signal pulse
shape. Refer to Application note
Directly matched Antenna - Excel calculation
(
Ref. 3
) for
detail information on the RF signal pulse.
MFOUTSelect[2:0]
000
001
010
011
Signal routed to pin MFOUT
LOW
HIGH
envelope
transmit NRZ
0
0
0
0
1
100
101
110
111
X
Manchester with subcarrier
Manchester
reserved
reserved
digital test signal
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