MFRC63002R datasheet(89/118 Pages) NXP

89 / 118 page

MFRC630

All information provided in this document is subject to legal disclaimers.

Product data sheet

COMPANY PUBLIC

Rev. 3.1 — 6 September 2012

227531

89 of 118

NXP Semiconductors

MFRC630

Contactless reader IC

9.12.5 Rcv

9.12.6 RxAna

This register allows to set the gain (rcv_gain) and high pass corner frequencies

(rcv_hpcf).

Table 153. Rcv register (address 38h)

Bit

Symbol

Rcv_Rx_single

Rx_ADCmode

SigInSel

RFU

CollLevel

Access

rights

r/w

Table 154. Rcv bits

Bit

Symbol

Description

Rcv_Rx_single

Single RXP Input Pin Mode;

0: Fully Differential

1: Quasi-Differential

Rx_ADCmode

Defines the operation mode of the Analog Digital Converter (ADC)

0: normal reception mode for ADC

1: LPCD mode for ADC

5 to 4

SigInSel

Defines input for the signal processing unit:

0h - idle

1h - internal analog block (RX)

2h - signal in over envelope (ISO/IEC14443A)

3h - signal in over s3c-generic

3 to 2

RFU

1 to 0

CollLevel

Defines the strength of a signal to be interpreted as a collision:

0h - Collision has at least 1/8 of signal strength

1h - Collision has at least 1/4 of signal strength

2h - Collision has at least 1/2 of signal strength

3h - Collision detection is switched off

Table 155. RxAna register (address 39h)

Bit

Symbol

VMid_r_sel

RFU

rcv_hpcf

rcv_gain

Access

rights

r/w

Table 156. RxAna bits

Bit

Symbol

Description

7, 6

VMid_r_setl

Factory trim value, needs to be 0.

5, 4

RFU

3, 2

rcv_hpcf

The rcv_hpcf [1:0] signals allow 4 different settings of the base band

amplifier lower cut-off frequency from ~40 kHz to ~300 kHz.

1 to 0

rcv_gain

With rcv_gain[1:0] four different gain settings from 30 dB and 60 dB

can be configured (differential output voltage/differential input voltage).

MFRC63002R датащи(PDF) 89 Page - NXP Semiconductors

MFRC63002R датащи(HTML) 89 Page - NXP Semiconductors

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

датащи скачать

ссылки URL