mfrc522 NXP Semiconductors, mfrc522 Datasheet - Page 62

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

Table 146: Settings for TX2
NXP Semiconductors
112132
Product data sheet
TX1RFEn
0
1
100ASK
Force
0
1
x
TX2CW
The following abbreviations are used:
Remark: If only 1 driver is switched on, the values for ModGsN, ModGsP and CWGsN,
•
•
•
•
•
•
•
•
x
0
1
0
1
RF: 13.56 MHz clock derived from 27.12 MHz quartz divided by 2
RF_n: inverted 13.56 MHz clock
gspmos: Conductance, configuration of the PMOS array
gspmos: Conductance, configuration of the NMOS array
pCW: PMOS conductance value for continuos wave defined by CWGsP register
pMod: PMOS conductance value for modulation defined by ModGsP register
nCW: NMOS conductance value for continuos wave defined by CWGsN register
nMod: NMOS conductance value for modulation defined by ModGsN register
CWGsP are used for both drivers.
InVTx2
RFON
x
0
1
0
1
0
1
0
1
RFOFF
InVTx2
X
Rev. 3.2 — 22 May 2007
x
x
x
x
x
x
x
x
Envelope
X
X
X
X
0
1
0
1
0
1
0
1
x
RF_n
RF_n
RF_n
RF_n
RF_n
TX2
RF
RF
RF
RF
RF
0
0
x
GSPMos GSNMos Remarks
pMod
pMod
pMod
pMod
pCW
pCW
pCW
pCW
pCW
pCW
pCW
pCW
x
nMod
nMod
nMod
nMod
nCW
nCW
nCW
nCW
nCW
nCW
nCW
nCW
x
Contactless Reader IC
MFRC522
© NXP B.V. 2007. All rights reserved.
not specified if RF
is switched off
Gs always CW for
TX2CW
100%ASK:Tx2
pulled to 0
(independent of
InvTx2RFOn/INVT
X2RFOff)
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