參數資料
型號: 20-101-0709
廠商: Rabbit Semiconductor
文件頁數: 28/90頁
文件大小: 0K
描述: INTERFACE GRAPHIC DISPLAY OP6700
標準包裝: 1
系列: SBC
模塊/板類型: 單板計算機模塊
適用于相關產品: OP6700
其它名稱: 20-101-709
20-101-709-ND
30
Intellicom (OP6600/OP6700)
3.7 Other Hardware
3.7.1 Clock Doubler
The Intellicom uses an 18.432 MHz crystal, and so its clock doubler is disabled automati-
cally in the BIOS.
3.7.2 Spectrum Spreader
Intellicom boards that carry the CE mark have a Rabbit 2000 microprocessor that features
a spectrum spreader, which helps to mitigate EMI problems. By default, the spectrum
spreader is on automatically for Intellicom boards that carry the CE mark when used with
Dynamic C 7.32 or later versions, but the spectrum spreader may also be turned off or set
to a stronger setting. The means for doing so is through a simple global macro as shown
below.
There is no spectrum spreader functionality for Intellicom boards that do not carry the CE
mark or when using any Intellicom with a version of Dynamic C prior to 7.30.
1. Select the “Defines” tab from the Dynamic C Options > Project Options menu.
2. Normal spreading is the default, and usually no entry is needed. If you need to specify
normal spreading, add the line
ENABLE_SPREADER=1
For strong spreading, add the line
ENABLE_SPREADER=2
To disable the spectrum spreader, add the line
ENABLE_SPREADER=0
NOTE: The strong spectrum-spreading setting is not needed for the Intellicom.
3. Click OK to save the macro. The spectrum spreader will now remain off whenever you
are in the project file where you defined the macro.
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