TRF7970A: Special Direct Mode and Direct Mode 1 for FeliCa

Part Number: TRF7970A


Tool/software:

I have been working on a special direct mode to transmit and receive data based on the concept described in application note SLOA214.

The transmission works fine with ISO 14443A across all data rates, from 106 kbps to 848 kbps. However, on the receive side, it only works at 106 kbps.

It also does not work with other settings, such as ISO 14443B or FeliCa.

Could you provide some examples or guidance on how to use FeliCa in this mode?

Additionally, regarding Special Function Register (0x10), Bit 3, which enables direct mode for transmitting ISO 14443A data by feeding the bitstream directly —
does this mean that the direct bitstream method only works with ISO 14443A?