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L64777 参数 Datasheet PDF下载

L64777图片预览
型号: L64777
PDF下载: 下载PDF文件 查看货源
内容描述: L64777 DVB QAM调制器技术手册6/00\n [L64777 DVB QAM Modulator technical manual 6/00 ]
分类和应用:
文件页数/大小: 124 页 / 922 K
品牌: ETC [ ETC ]
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MAP_OFF  
AMPL  
QAM Mapping Off  
R/W 2  
When this bit is 1, the L64777 stops QAM mapping.  
When this bit is 0, the L64777 uses DVB-compliant  
mapping. The reset value is 0.  
PLL Oscillator Amplitude  
R/W 1  
This controls the amplitude of the on-chip PLL oscillator.  
When this bit is 0, the L64777 is in low-power mode with  
higher jitter. When this bit is 1, the L64777 is in  
high-power mode with lower jitter. For normal operation,  
set this bit to 0.  
RES  
Reserved  
0
This bit is reserved.  
4.1.8 Registers 7 and 8  
15 14  
RES  
0
ICNT_O  
RES  
Reserved  
15  
This bit is reserved.  
ICNT_O  
Initial OCLK Value  
R/W [14:0]  
This is a 15-bit initial value for the OCLK PLL feedback  
division. The reset value for bit 3 is 1; for all other bits it  
is 0.  
4.1.9 Registers 9 and 10  
15 14  
RES  
0
ICNT_I  
RES  
Reserved  
15  
This bit is reserved.  
ICNT_I  
Initial ICLK Value  
R/W [14:0]  
This is a 15-bit initial value for the ICLK PLL reference  
division. The reset value for bit 1 is 1; for all other bits it  
is 0.  
4-8  
Register Descriptions  
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