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
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Using the TRF7970A EVM With PC GUI
2.8 Registers Tab
The Registers tab is used to retrieve the values in the TRF7970A registers and to directly change the
values of those registers.
Some of the register settings are coded in the TRF7970A EVM firmware for the various protocols
commands; therefore, changes made in the Registers tab can be overwritten when going to a protocol tab
and setting a different protocol. To keep the values that are manually set, go to the Test Tab and check
Expert – keep settings when switching protocols. However, as some register settings are not compatible
or do not make sense when looking across the protocols, these values are coded into the EVM firmware
to provide (at the very least) sustaining performance. For example, the ISO Control Register value cannot
be set to 0x02 (default setting for ISO15693) and still support operation of ISO14443A, ISO14443B, or
FeliCa. See Figure 29 for example of this tab with registers set for default operation.
If the Set Defaults button is clicked, the EVM loses communication with the GUI. This is because the
Modulator and Sys Clock register (register 0x09) value is changed, so the MSP430 is no longer running at
the same clock speed as it was when communications were established. This causes the the UART baud
rate to be off time base, and the communications link is broken. To recover, close the GUI and reset the
TRF7970A EVM either by pressing the reset button on the board or by removing and USB power; next,
reconnect the EVM to USB and restart the GUI.
Figure 29. Registers Tab
2.9 NFC-PP Tab
This tab is for demonstrating the Near Field Communications (NFC) capabilities of the TRF7970A. It
requires two TRF7970A evaluation modules and two PCs with the TRF7970A EVM GUI loaded. The steps
required to demonstrate these functionalities from an Initiator and a Target perspective are described in
the following sections.
2.9.1 Initiator Setup
To setup the first TRF7970A as an Initiator (Master) (after connecting on the first PC) (see Figure 30):
1. Click the NFC-PP tab.
2. Click Set Protocol.
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SLOU321– August 2011 TRF7970A Evaluation Module (EVM)
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