mfrc531 NXP Semiconductors, mfrc531 Datasheet - Page 4

• Manufacturer Part Number: mfrc531
• Description: Iso/iec 14443 Reader Ic
• Manufacturer: NXP Semiconductors

NXP Semiconductors
7. Block diagram
MFRC531_34
Product data sheet
PUBLIC
Fig 1.
MFRC531 block diagram
VMID
NWR
30
(INCLUDING AUTOMATIC INTERFACE DETECTION AND SYNCHRONISATION)
10
32 × 16-BYTE
MULTIPLEXER
RANDOM GENERATOR
REFERENCE
MASTER KEY BUFFER
AMPLITUDE
CONTROL REGISTER
EEPROM
VOLTAGE
RATING
ANALOG
NRD
FIFO CONTROL
32-BIT PSEUDO
CYRPTO1 UNIT
TEST
64-BYTE FIFO
AUX
11
27
BANK
NCS
9
MFRC531
DEMODULATOR
CONTROL
EEPROM
ACCESS
I-CHANNEL
AMPLIFIER
I-CHANNEL
ALE
PARALLEL INTERFACE CONTROL
21
LEVEL SHIFTERS
CORRELATION
BIT DECODING
A0 A1 A2
22 23 24
AND
RX
29
DEMODULATOR
Q-CHANNEL
Q-CHANNEL
Rev. 3.4 — 26 January 2010
AMPLIFIER
PARITY GENERATION AND CHECK
FRAME GENERATION AND CHECK
BIT DECODING
PARALLEL/SERIAL CONVERTER
GENERATION AND CHECK
PROGRAMMABLE TIMER
COMMAND REGISTER
INTERRUPT CONTROL
SERIAL DATA SWITCH
13 14 15 16 17 18 19 20
056634
STATE MACHINE
BIT COUNTER
AD0 to AD7/D0 to D7
CRC16/CRC8
TVSS
FILTERING AND
8
GND
DISTRIBUTION
GENERATION,
GENERATION
BIT ENCODING
Q-CLOCK
CLOCK
TRANSMITTER CONTROL
TX1
5
V
POWER DOWN
GND
OSCILLATOR
POWER ON
POWER ON
CONTROL
CONTROL
VOLTAGE
MONITOR
DETECT
DETECT
RESET
AND
TX2
7
V
ISO/IEC 14443 reader IC
TVDD
6
25
12
31
32
26
28
MFRC531
2
3
4
1
© NXP B.V. 2010. All rights reserved.
001aal218
DVDD
RSTPD
IRQ
MFIN
MFOUT
OSCIN
OSCOUT
AVDD
DVSS
AVSS
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