Datasheet

PN512 All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2016. All rights reserved.
Product data sheet
COMPANY PUBLIC
Rev. 5.2 — 16 June 2016
111352 55 of 137
NXP Semiconductors
PN512
Full NFC Forum-compliant frontend
8.2.3.6 RFCfgReg
Configures the receiver gain and RF level detector sensitivity.
Table 91. RFCfgReg register (address 26h); reset value: 48h, 01001000b
7 6 5 4 3 2 1 0
RFLevelAmp RxGain RFLevel
Access
Rights
r/w r/w r/w r/w r/w r/w r/w r/w
Table 92. Description of RFCfgReg bits
Bit Symbol Description
7 RFLevelAmp Set to logic 1, this bit activates the RF level detectors’ amplifier.
6 to 4 RxGain This register defines the receivers signal voltage gain factor:
Value Description
000 18 dB
001 23 dB
010 18 dB
011 23 dB
100 33 dB
101 38 dB
110 43 dB
111 48 dB
3 to 0 RFLevel Defines the sensitivity of the RF level detector, for description see
Section 11.3 “
RF level detector”.