SLOA227B October 2015 – March 2019 TRF7964A , TRF7964A , TRF7970A , TRF7970A
The frame format for ISO14443B packets at 106 kbps (see Figure 11) is based on NFC-B technology specifications in NFCForum-TS-DigitalProtocol-1.0 and the ISO 14443-3 Specifications. The Type B frame format must always include the two CRC bytes.
When the initial RF collision is completed and no RF field has been detected (see Figure 7), the ISO control register must be configured as shown in Step 1 below. Step 2 must be used to send commands to the NFC-B/ISO14443B tag. For more information on the initial RF collision, see Section 3.