Hello everyone,
I use the TRF for creating my own RFID Reader, using SPI. Reading and 
writing from and to the registers basically works fine, but there are 
some issues left.
Writing to e.g. the Sysclock register (0x09) does only work if I read 
from the register beforehand (result can be measured with an 
oscilloscope). The same applies for other registers. This effect is not 
documented in the datasheet.

For setting up the communication with tags, I try to write to registers 
0x1D and 0x1E and again, I read from those before. After writing, I read 
from the registers in order to doublecheck. Strange: For 0x1D, it works 
fine and for 0x1E it does not.

Does anyone know how to do this correctly?

Cheers,
Christian

hi
I contact for help on TRF7960
I interfaced  the TRF7960 with dsPIC33F (microchip) via the SPI
I submitted my routing to IT engineers and they told me it is OK
my  SPI routine works well with  EEPROM and others
would you have documents or code that can help me to read and write on 
the RFID card
regards
my mail :a.benkolai@gmail.com