GMMC POCKETNFC User Manual
GMMC Pocket NFC Reader/Writer
13.56 MHz Multi Standard USB NFC Reader/Writer
Manual version 1.2
Introduction
The Pocket NFC reader/ writer is USB connected and powered and operates at 13.56 MHz. The
Pocket NFC reader offers different tag related functionality and USB communication modes.
If the tag is out of communication distance or if the communication is disturbed by harsh
environmental noise, the implemented automatic tag detection reestablishes the reader-tag
communication link
Independent from the analog RF circuitry, responsible for RF performance and communication, three
different digital USB host interface configurations are available.
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Pocket NFC Reader / Writer User Manual
USB VCOM (Virtual COM port) via CDC (communications device class)
USB CCID (chip card interface device) is a USB protocol that allows a smartcard to be
connected to a computer via a card reader.
USB KBD (Keyboard) as part of the USB HID (human interface device class) specification for
computer peripherals. It specifies a device class (a type of computer hardware) for human
interface devices such as keyboards, mice, game controllers…
Basic Reader behavior
Once the reader device is connected and USB power is available the device boots up and switches
the RF field on and starts automatic tag polling. The three board status LEDs (red/green/blue) are
used to indicate different states, depending on the integrated firmware´s function e.g. Power, RF
polling, communication…
Hardware Key features
1)
13.56MHz Multi Standard NFC Reader Writer
o ISO/IEC 14443 incl. MIFARE products using Crypto 1
o ISO/IEC 15693
o ISO/IEC 18000-3 mode 3
o Full NFC Forum tag type
o P2P active and passive, target, and initiator
o Card emulation ISO14443 type A
USB Stick form factor
USB power
USB digital communication modes
o USB VCOM (CDC class)
o USB KBD (Keyboard, HID class)
o USB CCID (Chip Card Interface Device)
Automatic tag discovery and communication link reconnection
Note: Feature implementation (read only, read/write) depending on device firmware. RF parameters
and analog circuitry behavior are not affected by the chosen USB host interface mode or functional
firmware and are given by the analog RF circuitry.
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