Dear Sirs
Can I use TRF7970AEVM to read memory of NFC barcode?
Thanks,
Phil Huang
Phil -
what is your definition of NFC Barcode?
as technically, NFC/RFID tags are read out using magnetic field and barcodes are read optically, so (again technically) there is no such thing as NFC Barcode....
now - you can store barcode data inside tag memory - which is what i think you really mean -
if this tag is NFC Type 2, 3, 4A, 4B or 5, then the answer is yes, you can use the TRF7970AEVM to activate, select and perform memory operations on the tags.
which tag type in particular are you interested in reading? if you don't know, but you do have Android phone, you can download an app like NFC TagInfo and it can tell you which type of tag it is so we can direct you directly to how to interact with it - as each tag type (listed above) - has their own protocol to follow.
Hey Phil,
Here is an example project I just put together: Kovio using DM1 on TRF7970AEVM.zip
It's based off a much larger project, that I just trimmed down to the basics for these tags. This Project runs on the TRF7970A EVM, but you have to make some modifications to the board configuration.
Configure the board as shown in sections 3.3.1 of this application note: 
These Kovio tags do not have parity bits, which is not something we can disable on the TRF79xx. Instead, we can bypass the packet framing layer of the TRF7970A using Direct Mode 1. This is explained further in section 2 of the App Note that I linked above.
DM1 allows us to have access to the bits directly, and then I package them in software. The barcode data is stored in the "pui16RxData" buffer, if you want to see the actual data.
Here is a logic capture showing us reading the tags: Kovio Reading 2.logicdata
Let me know if you have any further questions.
Thanks,
JD
