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MB15C03 参数 Datasheet PDF下载

MB15C03图片预览
型号: MB15C03
PDF下载: 下载PDF文件 查看货源
内容描述: 单串行输入锁相环频率合成器的片上预分频器 [Single Serial Input PLL Frequency Synthesizer On-Chip prescaler]
分类和应用: 预分频器
文件页数/大小: 24 页 / 258 K
品牌: FUJITSU [ FUJITSU ]
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MB15C03  
Figure 5 Serial data input timing  
Data  
Clock  
LE  
t2  
t3  
t4  
t1  
t5  
Since the divide rations are unpredictable when the MB15C03 is turned on, it is necessary to initialize the divide  
ratio for both dividers at power-on time. As shown in Figure 6, after setting the divide ratio for one of the dividers  
(e.g., programmable reference divider), set LE to “H” level before setting the divide ratio for the other divider  
(e.g., programmable divider). To change the divide ratio of one of the dividers after initialization, input the serial  
data only for that divider (the divide ratio for the other divider is preserved).  
Figure 6 Inputting serial data (Setting divisors)  
Serial data for programmable  
reference divider  
Serial data for programmable  
divider  
C
C
Data  
Clock  
LE  
16 clocks  
20 clocks  
* : Control bit(2 bits)  
14