Datasheet

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PN532_C1 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2017. All rights reserved. Product data sheet COMPANY PUBLIC
Rev. 3.6 — 28 November 2017
115436 114 of 222
NXP Semiconductors
PN532/C1
Near Field Communication (NFC) controller
Table 154. Settings for TX1
TX1
RFEn
Force
100ASK
InvTx1
RFON
InvTx1
RFOFF
Envelope TX1 GsPMos GsNMos Remarks
0 X X 0 0 0 ModGsNOff If TX1RFEN is set to logic 0, the pin TX1 is set to logic 0 or 1 depending on
InvTx1RFOFF. The bit Force 100ASK has no effect. Envelope modulates the
transconductance value.
1 0 CWGsNOff
10 1ModGsP
11CWGsP
1 0 0 X 0 RF ModGsP ModGsNON If TX1RFEN is set to logic 1, the RF phase of TX1 is depending on
InvTx1RFON. The bit Force100ASK has effect; when Envelope is set to
logic 0, TX1 is pulled to ground.
1 RF CWGsP CWGsNON
0 1 X 0 RF_n ModGsP ModGsNON
1 RF_n CWGsP CWGsNON
1 0 X 0 0 ModGsNON
1 RF CWGsP CWGsNON
1 1 X 0 0 ModGsNON
1 RF_n CWGsP CWGsNON
Table 155. Settings for TX2
TX2
RFEn
Force
100ASK
TX2CW InVTx2
RFON
InvTx2
RFOFF
Envelope TX2 GsPMos GsNMos Remarks
0 X 0 X 0 0 0 ModGsNOff If Tx2RFEn is set to logic 0, the pin TX2 is forced to 0 or 1 depending on
the InvTx2RFOFF bit. The bit ForceASK100 has no effect. The signal
Envelope modulates the transconductance value
1 0 CWGsNOff
10 1ModGsP
11CWGsP
1 X 0 0 0 CWGsNOff When Tx2CW bit is set, the transconductance values are always
CWGsP or CWGsNOff
1 0 CWGsNOff
10 1CWGsP
11CWGsP