参数资料
型号: 20-101-0405
厂商: Rabbit Semiconductor
文件页数: 30/80页
文件大小: 0K
描述: MODULE RABBITCORE RCM2010
标准包装: 1
系列: RabbitCore®
模块/板类型: MPU 核心模块
适用于相关产品: RCM2010
产品目录页面: 620 (CN2011-ZH PDF)
其它名称: 316-1084
32
RabbitCore RCM2000
4.5 Other Hardware
4.5.1 Clock Doubler
The RCM2000 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 25.8 MHz (RCM 2000 and RCM2010) and 18.4 MHz (RCM 2020) fre-
quencies are generated using 12.9 MHz and 9.2 MHz crystals. The clock doubler is dis-
abled automatically in the BIOS for crystals with a frequency above 12.9 MHz.
The clock doubler can be disabled if 25.8 MHz or 18.4 MHz clock speeds are not required.
Disabling the Rabbit 2000 microprocessor’s internal clock will reduce power consumption
and further reduce radiated emissions. The clock doubler is disabled with a simple config-
uration macro as shown below.
Change the serial baud rate to 57,600 bps when the RCM2000 is operated at 12.9 MHz or
9.2 MHz.
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.
相关PDF资料
PDF描述
20-101-1093 RCM4110 RABBITCORE
20-101-0453 MODULE RABBITCORE RCM2300
20-101-1235 CORE MODULE RCM5700
11FMN-BMTTR-A-TB CONN FMN HSNG 11POS STAG REV SMD
046232103103800+ CONN FFC/FPC 3POS 1MM R/A SMD
相关代理商/技术参数
参数描述
20-101-0410 功能描述:单板计算机 OP6700/6600 battery RoHS:否 制造商:Ampro By ADLINK 外观尺寸:EPIC 处理器类型:Intel Atom D510 频率:1.66 GHz 存储容量:2 GB (max) 存储类型:DDR2, L2 Cache 接口类型:Ethernet, PS/2, SATA, Serial, USB 工作电源电压:5 V, 12 V 功耗:13 W 最大工作温度:+ 70 C 尺寸:165.1 mm x 114.3 mm
20-101-0411 功能描述:单板计算机 OP6700 RoHS:否 制造商:Ampro By ADLINK 外观尺寸:EPIC 处理器类型:Intel Atom D510 频率:1.66 GHz 存储容量:2 GB (max) 存储类型:DDR2, L2 Cache 接口类型:Ethernet, PS/2, SATA, Serial, USB 工作电源电压:5 V, 12 V 功耗:13 W 最大工作温度:+ 70 C 尺寸:165.1 mm x 114.3 mm
20-101-0412 功能描述:单板计算机 OP6600 RoHS:否 制造商:Ampro By ADLINK 外观尺寸:EPIC 处理器类型:Intel Atom D510 频率:1.66 GHz 存储容量:2 GB (max) 存储类型:DDR2, L2 Cache 接口类型:Ethernet, PS/2, SATA, Serial, USB 工作电源电压:5 V, 12 V 功耗:13 W 最大工作温度:+ 70 C 尺寸:165.1 mm x 114.3 mm
20-101-0420 功能描述:模块配件 FWT27/Pluggable RoHS:否 制造商:Lantronix 产品: 用于:
20-101-0421 功能描述:模块配件 FWT18/Pluggable RoHS:否 制造商:Lantronix 产品: 用于: