參數(shù)資料
型號: 101-0452
廠商: Rabbit Semiconductor
文件頁數(shù): 37/100頁
文件大?。?/td> 0K
描述: KIT DEV RABBIT RCM2100 INTL
標(biāo)準(zhǔn)包裝: 1
系列: RabbitCore 2000
主要目的: *
嵌入式: *
已用 IC / 零件: HYDRA
主要屬性: *
次要屬性: *
已供物品: HYDRA 裝置,存儲卡,空白試驗卡,鼠標(biāo),鍵盤,游戲鍵盤,視頻和 USB 線纜,電源和 CD 等
User’s Manual
35
4.5 Other Hardware
4.5.1 Clock Doubler
The RCM2100 takes advantage of the Rabbit 2000 microprocessor’s internal clock dou-
bler. A built-in clock doubler allows half-frequency crystals to be used to reduce radiated
emissions. The 22.1 MHz frequency is generated using an 11.05 MHz crystal. The clock
doubler is disabled automatically in the BIOS for crystals with a frequency above
12.9 MHz.
The clock doubler may be disabled if 22.1 MHz clock speeds are not required. Disabling
the Rabbit 2000 microprocessor’s internal clock will reduce power consumption and fur-
ther reduce radiated emissions. The clock doubler is disabled with a simple configuration
macro as shown below.
1. Select the “Defines” tab from the Dynamic C Options > Project Options menu.
2. Add the line CLOCK_DOUBLED=0 to always disable the clock doubler.
The clock doubler is enabled by default, and usually no entry is needed. If you need to
specify that the clock doubler is always enabled, add the line CLOCK_DOUBLED=1 to
always enable the clock doubler. The clock speed will be doubled as long as the crystal
frequency is less than or equal to 26.7264 MHz.
3. Click OK to save the macro. The clock doubler will now remain off whenever you are
in the project file where you defined the macro.
相關(guān)PDF資料
PDF描述
VE-J7X-EZ-F1 CONVERTER MOD DC/DC 5.2V 25W
EVAL-ADF4360-8EBZ1 BOARD EVALUATION FOR ADF4360-8
VE-J7X-EY-S CONVERTER MOD DC/DC 5.2V 50W
MCP73213-B6SI/MF IC LI-ION/LI-POLY CTRLR 10-DFN
VE-J7W-EZ-F4 CONVERTER MOD DC/DC 5.5V 25W
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
10-104520-08P 制造商:Amphenol Aerospace 功能描述:PLUG
10-104520-08S 制造商:Amphenol Aerospace 功能描述:PLUG
10-104520-16P 制造商:Amphenol Aerospace 功能描述:PLUG
10-104520-16S 制造商:Amphenol Aerospace 功能描述:PLUG
10-104520-25S 制造商:Amphenol Aerospace 功能描述:PLUG