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| CC2520_11 Datasheet, PDF (62/133 Pages) Texas Instruments – 2.4 GHZ IEEE 802.15.4/ZIGBEE RF TRANSCEIVER | |||
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CC2520 DATASHEET
2.4 GHZ IEEE 802.15.4/ZIGBEE® RF TRANSCEIVER
SWRS068 â DECEMBER 2007
16 Frequency and Channel Programming
The carrier frequency is set by programming the 7 bit frequency word located in FREQCTRL.FREQ[6:0].
CC2520 supports carrier frequencies in the range 2394MHz to 2507MHz. The carrier frequency FC in MHz is
given by FC = (2394 + FREQCTRL.FREQ[6:0]) MHz, and is programmable in 1 MHz steps.
IEEE 802.15.4-2006 specifies 16 channels within the 2.4 GHz band. They are numbered 11 through 26 and
are 5 MHz apart. The RF frequency of channel k is given by [2].
Fc = 2405 + 5(k â11) [MHz] k â[11,26]
For operation in channel k, the FREQCTRL.FREQ register should therefore be set to
FREQCTRL.FREQ = 11 + 5 (k-11)
62
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