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  • TRF7960: VDD_RF automatic selection depending on start-up sequence input voltages

    TI Thinks Resolved
    Part Number: TRF7960 On our application we see that the reader is not always stable depending on the 3V3 and 5V start-up sequence: Stable: - when 3V3 switched on before 5V is switched on - Vdd_RF seems to be set to 4.3V (automatic mode) Unstable…

  • TRF7960: Can't read Murata Tag

    TI Thinks Resolved
    Part Number: TRF7960 Hello everyone. I have an RFID design that can read most tags but not a Murata LXMS33HCNG-134. I can write to and read from the tag using my smart phone and the NXP app and I can read the tag using the TRF7960EVM board. Using the…
    • Answered

  • TI TRF7960 Reference Board antenna design

    Resolved
    Other Parts Discussed in Thread: TRF7960 Hi, I am designing PCB with TI TRF7960 and would like to design good reading performance antenna. Where could I find dimensions of TI TRF7960 Reference Board antenna? Thank you and best regards, Žan…
    • Resolved
    • Answered

  • RE: TRF7960: Receive problem

    Resolved
    Hello Guido, Does the issue occur across multiple boards, or just a single one? Can you share the schematic for the TRF7960?

  • TRF7960: Multiple antennas, single RFID reader IC Chess Table

    TI Thinks Resolved
    Part Number: TRF7960 Dear colleagues, I maked and tested this application with TRF7960 and switches. It's running fine with antennas like your training board. I need your support about how i can built antennas 44x5'5 cm (official chess table). At least…
    • Answered

  • TRF7960: VDDIO Externally Supplied

    Resolved
    Part Number: TRF7960 Hi, If VDDIO is supplied externally (not from VDD_X) does vdd_x still need decoupling capacitors? Are there any sequencing concerns? ie Vin must come up before VDDIO?
    • Resolved

  • RE: TRF7960: Read Single Block issue

    Hi Ralph, I made a test sending soft init and idle commands to TRF at startup but nothing changed. To test SPI at 4Mhz I should increase also the CPU frequency to 16Mhz so I need an external oscillator... it is not immediate. I test SPI at 500Khz but…
    • Answered

  • Compiler/TRF7960: ISO 14443A Long range reader produce

    Resolved
    Part Number: TRF7960 Tool/software: TI C/C++ Compiler 145/5000 Hello there I want to produce at least 25 readers with a reading range of mifare desfire cards. ( class E 25w power amplifier 12v + antenna + reader ) …
    • Resolved

  • RE: TRF7970A: Stellaris ARM Cortex sample code to address TRF7960/7970

    Hello Rasool, a detailed description of the TRF7970 initialization can be found in section 6.11. of the TRF7070A datasheet. http://www.ti.com/lit/ds/symlink/trf7970a.pdf For the Direct Mode description you will find more information in the document…
    • Answered

  • TRF7960: Integration with STM32F407 Processor via SPI

    Resolved
    Part Number: TRF7960 Hello - We are trying to integration TRF7960 with our custom hardware which has STM32F407 processor (via SPI). As per errata 1.1 on TRF7960, we need to switch the polarity of clock during write &read operation. http://www.ti.com…
    • Resolved

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