User's Manual
Table Of Contents
- TRF7970A Evaluation Module (EVM)
- 1 TRF7970A EVM Description
- 2 Using the TRF7970A EVM With PC GUI
- 2.1 USB Driver
- 2.2 TRF7970A EVM GUI Startup
- 2.3 ISO15693 Tab
- 2.3.1 Inventory (Command Code 0x01)
- 2.3.2 Read Single Block (Command Code 0x20)
- 2.3.3 Write Single Block (Command Code 0x21)
- 2.3.4 Lock Block (Command Code 0x22)
- 2.3.5 Read Multiple Blocks (Command Code 0x23)
- 2.3.6 Write Multiple Blocks (Command Code 0x24)
- 2.3.7 Stay Quiet (Command Code 0x02)
- 2.3.8 Select (Command Code 0x25)
- 2.3.9 Reset to Ready (Command Code 0x26)
- 2.3.10 Write AFI (Command Code 0x27)
- 2.3.11 Lock AFI (Command Code 0x28)
- 2.3.12 Write DSFID (Command Code 0x29)
- 2.3.13 Lock DSFID (Command Code 0x2A)
- 2.3.14 Get System Information (Command Code 0x2B)
- 2.3.15 Get Multiple Block Security Status (Command Code 0x2C)
- 2.3.16 TI Custom Commands
- 2.4 ISO14443A Tab
- 2.5 ISO14443B Tab
- 2.6 FeliCa Tab
- 2.7 Find Tags Tab
- 2.8 Registers Tab
- 2.9 NFC-PP Tab
- 2.10 Test Tab
- 3 Abbreviations
- 4 References
TRF7970A EVM Description
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Table 2. Logic Analyzer Connection Points on EVM at HDR_1, HDR_3 and HDR_2
HDR_3 Pin Parallel Name SPI With SS Name SPI Without SS Name
P2 IRQ IRQ IRQ
HDR_2 Pin Parallel Name SPI With SS Name SPI Without SS Name
P5 GND GND GND
HDR_1 Pin Parallel Name SPI With SS Name SPI Without SS Name
P1 DATA_CLK DATA_CLK DATA_CLK
It is also possible to disconnect the MSP430F2370 from the TRF7970A and utilize the above mentioned
headers to wire in MCU of choice (for example, other members of the MSP430™, Stellaris™ Cortex™-M3,
or Sitara™ ARM8™/ ARM9™ families)
Resistor R3 (0 Ω) makes the electrical connection between the 50-Ω impedance matching circuit from the
TRF7970A to the onboard magnetic dipole antenna circuit, also matched to 50 Ω. When testing
application specific antennas using J3 (SMA port), disconnect or remove R3 to maintain 50-Ω impedance
out from the TRF7970A circuitry to the application specific antenna being tested (see Figure 1).
1.3 Standalone Mode Description
The TRF7970A EVM has a standalone mode in which when power is applied (via the USB connector),
then the preloaded MSP430F2370 firmware initializes the TRF7970A IC for full power operation,
illuminates the power LED, and begins a polling loop for ISO15693, ISO14443A, and ISO14443B
transponders.
When any (or all) of these types of transponders are presented to the onboard antenna, the corresponding
LED is illuminated (see silkscreen or actual TRF7970A PCBA in kit or in Figure 1). The TRF7970A EVM
kit comes with a sample selection of Texas Instruments ISO15693 transponders.
When the TRF7970A EVM is connected to a PC and the TRF7970A EMV GUI is started, the preloaded
MSP430F2370 firmware detects this, stops the polling loop, and turns off any protocol LEDs that were
illuminated to take direct host commands.
1.4 GUI Software Description
The TRF7970A EVM can be used with the TRF7970A EVM PC GUI to demonstrate the traditional RFID
reader/writer operations as well as NFC Forum Initiator/Target operations. As the EVM enumerates as a
serial port on a PC, the EVM can be used with almost any simple serial terminal based program such as
(but not limited to) HyperTerminal, Docklight, or LabVIEW. Using the TRF7970A EVM with the GUI is
detailed in Section 2.
6
TRF7970A Evaluation Module (EVM) SLOU321– August 2011
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