Specifications

InfoThink Technology CO., LTD.
5F., No.133, Xinhu 1st Rd., Neihu Dist., Taipei City 114-94, Taiwan (R.O.C.)
TEL：[phone] FAX：[phone]
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8. USB Device VID/PID and Firmware Version
VID/PID: 0x1FC9/0x0117
F/W Ver.: 2.45
9. Block Diagram
This module is powered by 5V from USB interface. Main supply voltage for internal analog modules,
digital logic and memories. The 27.12 MHz crystal oscillator is used as a reference for all operations
requiring high stability of the clock frequency.
TX1 TX2 transmitter is able to drive an antenna circuit connected to outputs TX1 and TX2 with a 13.56
MHz carrier signal. The signal delivered on pins TX1 and pin TX2 is a 13.56 MHz carrier, modulated by
an envelope signal for energy and data transmission to archive the standards ISO/IEC14443 A and B,
FeliCa, and ISO/IEC18092 define the protocols.
In reader mode, the response from the antenna to the differential input RXP/RXN. The reader mode
receiver extracts this signal by first removing the carrier in passive mixers. It then filters and amplifies
the baseband signal before converting to digital values.