20-101-1207 Rabbit Semiconductor, 20-101-1207 Datasheet - Page 48
20-101-1207
Manufacturer Part Number
20-101-1207
Description
RCM4510W FCC CERTIFIED
Manufacturer
Rabbit Semiconductor
Type
Transceiver, 802.15.4/ZigBeer
Datasheet
1.20-101-1207.pdf
(118 pages)
Specifications of 20-101-1207
Frequency
2.4GHz
Wireless Frequency
29.49 MHz
For Use With/related Products
RCM4510W
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
316-1144
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4.5 Other Hardware
4.5.1 Clock Doubler
The clock doubler on the RCM4510W is disabled by default.
4.5.2 Spectrum Spreader
The Rabbit 4000 features a spectrum spreader, which helps to mitigate EMI problems. The
spectrum spreader is on by default, but it may also be turned off or set to a stronger setting.
The means for doing so is through a simple configuration macro as shown below.
42
1. Select the “Defines” tab from the Dynamic C
2. Normal spreading is the default, and usually no entry is needed. If you need to specify
3. Click
normal spreading, add the line
For strong spreading, add the line
To disable the spectrum spreader, add the line
value whenever a program is compiled using this project file.
ENABLE_SPREADER=1
ENABLE_SPREADER=2
ENABLE_SPREADER=0
NOTE: Refer to the Rabbit 4000 Microprocessor User’s Manual for more information
NOTE: The strong spectrum-spreading setting is not recommended since it may limit
OK
on the spectrum-spreading setting and the maximum clock speed.
the maximum clock speed or the maximum baud rate. It is unlikely that the strong set-
ting will be used in a real application.
to save the macro. The spectrum spreader will be set according to the macro
Options > Project Options
RabbitCore RCM4500W
menu.
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