TMEB8704 Atmel, TMEB8704 Datasheet - Page 12

• Manufacturer Part Number: TMEB8704
• Description: KIT DEMO FOR RFID TRANSPONDERS
• Manufacturer: Atmel
• Type: Development kitr

Specifications of TMEB8704

• Contents: Board, Cables, Manual and more
• For Use With/related Products: e5530, T5552, T5557, TK5530, TK5551, TK5552, U2270B
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

5.2.2
12
TMEB8704 Application Note
Option
Figure 5-2.
In the submenu COM-Port, select the appropriate RS232 serial port to communicate with the
RFID application kit (see
the application board, press function key F12 and all LEDs will flash; if the LEDs don’t flash,
change COM-Port.)
Figure 5-3.
The submenu Tuning enables two different tuning modes: manual tuning (High to Low Fre-
quency) and Autotuning (see
Figure 5-4.
In manual tuning mode, the user can select one of four frequency stages from 122 kHz to
128 kHz in steps of 2 kHz (Low Frequency, Semi Low Frequency, Semi High Frequency and
High Frequency). This requires that the on-chip oscillator of the U2270B is tuned to 125 kHz
(these values are nominal values, the actual values may differ slightly due to component toler-
ances). In autotuning mode, the software switches between the four frequencies until the
transponder can be read out. The currently selected frequency stage is indicated, binary
encoded, on the application board by the Tune 1/Tune 2 LEDs (see
Transponder Menu
COM-Port Menu
Tuning Menu
Figure
Figure
5-3). (To verify that there is communication between the PC and
5-4).
Table 5-1 on page
4781A–RFID–10/05
13).