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MFRC522 데이터시트(PDF) 28 Page - NXP Semiconductors

부품명 MFRC522
상세설명  Contactless Reader IC
PDF  109 Pages
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제조업체  NXP [NXP Semiconductors]
홈페이지  http://www.nxp.com
Logo NXP - NXP Semiconductors

MFRC522 데이터시트(HTML) 28 Page - NXP Semiconductors

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© NXP B.V. 2007. All rights reserved.
Product data sheet
Rev. 3.2 — 22 May 2007
28 of 109
NXP Semiconductors
MFRC522
Contactless Reader IC
9.2.2.6
TxASKReg
Controls the settings of the transmit modulation.
9.2.2.7
TxSelReg
Selects the internal sources for the analog part.
Table 49:
TxAutoReg register (address 15h); reset value: 00h
Bit
7
6
5
4
3
2
1
0
Symbol
-
Force100ASK
-
Access
Rights
RFU
r/w
RFU
Table 50:
Description of TxAutoReg bits
Bit
Symbol
Description
7
-
Reserved for future use.
6
Force100ASK
Set to logic 1, Force100ASK forces a 100% ASK modulation
independent of the setting in register ModGsPReg.
5 to 0
-
Reserved for future use.
Table 51:
TxSelReg register (address 16h); reset value: 10h
Bit
7
6
5
4
3
2
1
0
Symbol
-
DriverSel
MfOutSel
Access
Rights
RFU
r/w
r/w
Table 52:
Description of TxSelReg bits
Bit
Symbol
Description
7 to 6
-
Reserved for future use.
5 to 4
DriverSel
Selects the input of driver Tx1 and Tx2.
Value
Description
00
Tristate
Remark: In soft power-down the drivers are only in tristate
mode if DriverSel is set to tristate mode.
01
Modulation signal (envelope) from the internal coder, Miller
Pulse Coded.
10
Modulation signal (envelope) from MIFIN
11
High
Remark: The High level depends on the setting of
InvTx1RFOn/ InvTx1RFOff and InvTx2RFOn/
InvTx2RFOff.



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