Hi, if somebody know what is the type of modulation using in NFC module of nRF52832?
Hi, if somebody know what is the type of modulation using in NFC module of nRF52832?
From PS; 42 NFCT — Near field communication tag:
The NFCT peripheral (referred to as the 'NFC peripheral' from now on) supports communication signal
interface type A and 106 kbps bit rate from the NFC Forum.
With appropriate software, the NFC peripheral can be used to emulate the listening device NFC-A as
specified by the NFC Forum.
Listed here are the main features for the NFC peripheral:
• NFC-A listen mode operation
• 13.56 MHz input frequency
• Bit rate 106 kbps
• Wake-on-field low power field detection (SENSE) mode
• Frame assemble and disassemble for the NFC-A frames specified by the NFC Forum
• Programmable frame timing controller
• Integrated automatic collision resolution, CRC and parity functions
From http://www.rfwireless-world.com/Terminology/NFC-A-vs-NFC-B-vs-NFC-F.html:
The signalling type NFC-A is based on ISO/IEC 14443A. It is similar to RFID type A. In the type-A based communication delay encoding (miller encoding) technique is employed along with AM modulation. Here binary data is transmitted with the data rate of about 106 Kbps using type A communication. Here binary signal must change from 0 % to 100 % to distinguish between binary 1 and binary 0 data informations.
From PS; 42 NFCT — Near field communication tag:
The NFCT peripheral (referred to as the 'NFC peripheral' from now on) supports communication signal
interface type A and 106 kbps bit rate from the NFC Forum.
With appropriate software, the NFC peripheral can be used to emulate the listening device NFC-A as
specified by the NFC Forum.
Listed here are the main features for the NFC peripheral:
• NFC-A listen mode operation
• 13.56 MHz input frequency
• Bit rate 106 kbps
• Wake-on-field low power field detection (SENSE) mode
• Frame assemble and disassemble for the NFC-A frames specified by the NFC Forum
• Programmable frame timing controller
• Integrated automatic collision resolution, CRC and parity functions
From http://www.rfwireless-world.com/Terminology/NFC-A-vs-NFC-B-vs-NFC-F.html:
The signalling type NFC-A is based on ISO/IEC 14443A. It is similar to RFID type A. In the type-A based communication delay encoding (miller encoding) technique is employed along with AM modulation. Here binary data is transmitted with the data rate of about 106 Kbps using type A communication. Here binary signal must change from 0 % to 100 % to distinguish between binary 1 and binary 0 data informations.
thanks)