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MFRC522 数据表(PDF) 49 Page - NXP Semiconductors

部件名 MFRC522
功能描述  Contactless reader IC
PDF  96 Pages
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制造商  NXP [NXP Semiconductors]
网页  http://www.nxp.com
标志 NXP - NXP Semiconductors

MFRC522 数据表(HTML) 49 Page - NXP Semiconductors

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MFRC522_33
© NXP B.V. 2009. All rights reserved.
Product data sheet
PUBLIC
Rev. 3 — 26 October 2009
112133
49 of 96
NXP Semiconductors
MFRC522
Contactless reader IC
9.3.2.6
TxASKReg register
Controls transmit modulation settings.
9.3.2.7
TxSelReg register
Selects the internal sources for the analog module.
Table 63.
TxASKReg register (address 15h); reset value: 00h bit allocation
Bit
7
6
5
4
3
2
1
0
Symbol
reserved Force100ASK
reserved
Access
-
R/W
-
Table 64.
TxASKReg register bit descriptions
Bit
Symbol
Value Description
7
reserved
-
reserved for future use
6
Force100ASK 1
forces a 100 % ASK modulation independent of the ModGsPReg
register setting
5 to 0 reserved
-
reserved for future use
Table 65.
TxSelReg register (address 16h); reset value: 10h bit allocation
Bit
7
6
5
4
3
2
1
0
Symbol:
reserved
DriverSel[1:0]
MFOutSel[3:0]
Access:
-
R/W
R/W
Table 66.
TxSelReg register bit descriptions
Bit
Symbol
Value
Description
7 to 6
reserved
-
reserved for future use
5 to 4
DriverSel
[1:0]
-
selects the input of drivers TX1 and TX2
00
3-state; in soft power-down the drivers are only in 3-state
mode if the DriverSel[1:0] value is set to 3-state mode
01
modulation signal (envelope) from the internal encoder, Miller
pulse encoded
10
modulation signal (envelope) from pin MIFIN
11
HIGH; the HIGH level depends on the setting of bits
InvTx1RFOn/InvTx1RFOff and InvTx2RFOn/InvTx2RFOff



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