W55MID50 Datasheet, PDF (5/10 Pages) Winbond – WINBOND MFID READER

System Description
W55MID50 Data Sheet
2.1 W55MID50 System Block Diagram
Reset &
Power down
Control
Command
Extractor
Voltage
Regulator
Oscillation circuit
13.56MHz
Configuration
Register
Preamble
&
Data Clk
Generator
TXD
PA
Data-
Buff.
output
Data-
Buff.
II
Data-
Buff.
I
Decoder
(NRZ/
Man.)
Envelope detector
&
Analog Front End
2.2 W55MID50 Functional Description
Transmission Power Amplifier (PA)
It provides 4 different selectable transmission
power for Reader chip to support MFID^WB Tag's
radiation power supply. The external inductor coupling
circuit is designed for 13.56MHz magnetic field
resonance. The coupled center frequency will depend
on equivalent value of external PCB inductor and
capacitor.
Envelope Detector & Analog Front End
The major function of this unit provides
MFID^WB Tag's data can be extracted.
Voltage Regulator
The voltage regulator generates the system
needs of device power supply.
Configuration Register
System configuration register controls the all
functional settings of W55MID50 such as Tag data
Winbond Electronics Corp.
5
Revision: A3
Publish Date: 2003/3/24