Texas Instruments Chipcon CC2420DK, User Manual

Page: 10 / 32

SWRU045 Page 10 of 32
Note: The crystal X1 mounted on the EM board is a 16.000 MHz crystal, with ±10 ppm initial
tolerance, ± 10 ppm drift over temperature and a temperature range of -10 ˚ C to +60 ˚ C. The
crystal is designed for 16 pF load capacitance. In an actual application, the tolerance, drift
and temperature range of the crystal must be considered with application requirements in
mind. Please consult the data sheet and SmartRF
®
Studio for more information. It is possible
to choose a larger crystal package to save cost. The crystal should have an ESR of 60 Ω or
less.
CC2400 Evaluation Board
The Evaluation Board is used as a motherboard for the Evaluation Modules and provides
power and external connections.
Figure 7: CC2400EB Evaluation Board
Power supply section
The power supply section is configured by moving the jumpers located on the board. There
are three voltage regulators on the board, one for use by the FPGA, a 3.3 V regulator for
general use and a 1.8 V regulator for powering the CC2420. The voltage regulator for the
USB port
Serial port
Power
connections
Sockets for EM
Buttons
LEDs
SMA connectors
Test port
Reset button
Jumpers
DC jack