mfrc522 NXP Semiconductors, mfrc522 Datasheet - Page 28

• Manufacturer Part Number: mfrc522
• Description: Contactless Reader Ic
• Manufacturer: NXP Semiconductors

NXP Semiconductors
112132
Product data sheet
9.2.2.6 TxASKReg
9.2.2.7 TxSelReg
Controls the settings of the transmit modulation.
Table 49:
Table 50:
Selects the internal sources for the analog part.
Table 51:
Table 52:
Bit
7
6
5 to 0
Bit
7 to 6
5 to 4
Symbol
Access
Symbol
Access
Rights
Rights
Bit
Bit
Symbol
-
DriverSel
Symbol
-
Force100ASK Set to logic 1, Force100ASK forces a 100% ASK modulation
-
Description of TxAutoReg bits
TxSelReg register (address 16h); reset value: 10h
Description of TxSelReg bits
TxAutoReg register (address 15h); reset value: 00h
RFU
7
-
7
RFU
-
Force100ASK
Description
Reserved for future use.
Selects the input of driver Tx1 and Tx2.
Value
00
01
10
11
Rev. 3.2 — 22 May 2007
6
r/w
6
Description
Reserved for future use.
independent of the setting in register ModGsPReg.
Reserved for future use.
Description
Tristate
Remark: In soft power-down the drivers are only in tristate
Modulation signal (envelope) from the internal coder, Miller
Pulse Coded.
Modulation signal (envelope) from MIFIN
High
Remark: The High level depends on the setting of
5
DriverSel
5
r/w
mode if DriverSel is set to tristate mode.
InvTx1RFOn/ InvTx1RFOff and InvTx2RFOn/
InvTx2RFOff.
4
4
3
3
RFU
-
2
MfOutSel
2
Contactless Reader IC
r/w
MFRC522
© NXP B.V. 2007. All rights reserved.
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