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 49 of 137
NXP Semiconductors
PN512
Full NFC Forum-compliant frontend
8.2.2.14 ManualRCVReg
Allows manual fine tuning of the internal receiver.
Remark: For standard applications it is not recommended to change this register settings.
Table 73. ManualRCVReg register (address 1Dh); reset value: 00h, 00000000b
7 6 5 4 3 2 1 0
0 FastFilt
MF_SO
Delay
MF_SO
Parity
Disable
LargeBW
PLL
Manual
HPCF
HPFC
Access
Rights
RFU r/w r/w r/w r/w r/w r/w r/w
Table 74. Description of ManualRCVReg bits
Bit Symbol Description
7 - Reserved for future use.
6FastFilt
MF_SO
If this bit is set to logic 1, the internal filter for the Miller-Delay Circuit is
set to Fast mode.
Note: This bit should only set to logic 1, if Millerpulses of less than
400 ns Pulse length are expected. At 106 kBaud the typical value is
3us.
5 Delay MF_SO If this bit is set to logic 1, the Signal at SIGOUT-pin is delayed, so that
in SAM mode the Signal at SIGIN must be 128/fc faster compared to
the ISO/IEC 14443A, to reach the ISO/IEC 14443A restrictions on the
RF-Field.
Note: This delay shall only be activated for setting bits SigOutSel to
(1110b) or (1111b) in register TxSelReg.
4 Parity Disable If this bit is set to logic 1, the generation of the Parity bit for
transmission and the Parity-Check for receiving is switched off. The
received Parity bit is handled like a data bit.
3 LargeBWPLL Set to logic 1, the bandwidth of the internal PLL used for clock
recovery is extended.
2 ManualHPCF Set to logic 0, the HPCF bits are ignored and the HPCF settings are
adapted automatically to the receiving mode. Set to logic 1, values of
HPCF are valid.
1 to 0 HPFC Selects the High Pass Corner Frequency (HPCF) of the filter in the
internal receiver chain
00 For signals with frequency spectrum down to 106 kHz.
01 For signals with frequency spectrum down to 212 kHz.
10 For signals with frequency spectrum down to 424 kHz.
11 For signals with frequency spectrum down to 848 kHz