SLOA192B April 2014 – March 2019 TRF7970A , TRF7970A
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NFC active and passive peer-to-peer communication using the TRF7970A
- Trademarks
- 1 Introduction
- 2 Initial RF Collision
- 3 TRF7970A Register Settings
- 4 Peer-to-Peer at 106 kbps
- 5 Peer-to-Peer at 212 kbps and 424 kbps
- 6 Hardware Description
- 7 Passive and Active Peer-to-Peer Firmware Example
- 8 Quick Start Guide
- 9 Operational Overview
- 10 Peer-to-Peer Interoperability Results
- 11 Conclusion
- 12 References
- Revision History
5 Peer-to-Peer at 212 kbps and 424 kbps
The TRF7970A supports initiator and target for NFC-F FeliCa™ at 212 kbps (fc/64) and 424 kbps (fc/32). When the transceiver is in default mode [ISO mode (for more information, see the Direct Mode section of [1])] the decoded data is available to the MCU through the FIFO. The frame format for 212 kbps and 424 kbps is shown in Figure 10. This section covers the register settings and anticollision sequence for both the active and passive NFC-F peer-to-peer modes.
Figure 10. Frame Format for 212 kbps and 424 kbps 
Figure 11. Peer-to-Peer 212-kbps or 424-kbps Initiator Anticollision for Active Communication