Texas Instruments Chipcon CC2420DK, User Manual

Page: 30 / 32

SWRU045 Page 30 of 32
Using the CC2420DK for prototyping
The CC2420EM module contains the CC2420 and all external components required. All
CC2420 signals are available at the SMD connectors on the bottom side of the module. The
modules can be easily plugged into a prototype PCB containing the rest of the system. The
SMD connectors used on the CC2420EM are manufactured by Samtec
(
http://www.samtec.com/ ), please refer to the CC2400EB bill of materials for the part number
of the connector that will interface with the connectors on the CC2420EM.
It is also possible to do prototyping by connecting any microcontroller development kit to the
CC2400EB through Test Port 1. The FPGA must then be programmed using the SmartRF
Studio “Load FPGA Configuration” function at startup. The
“fpga_cc2420_uc_prototyping_1_0.bin” FPGA file is downloadable from the Chipcon website.
All leds will be turned off after programming this FPGA. The FPGA will give access to all
CC2420 digital pins on Test Port 1, as shown below.
Test Port 1 Pin Number Test Port 1 (to / from uC)
1 N/C
2 N/C
3 N/C
4 FIFOP (to uC)
5 HighZ
6 HighZ
7 HighZ
8 SFD (to uC)
9 HighZ
10 HighZ
11 HighZ
12 CSn (from uC)
13 SCLK (from uC)
14 SI (from uC)
15 SO (to uC)
16 CCA (to uC)
17 FIFO (to uC)
18 RESETn (from uC)
19 VREG_EN (from uC)
20 GND
Test Port 2 contains the same pins, except these are all outputs from the FPGA. Test Port 2
may be connected to a Logic Analyzer for software debugging purposes.