參數(shù)資料
型號: L64780
廠商: LSI Corporation
英文描述: DVB-T COFDM Demodulator(對地?cái)?shù)字視頻廣播 正交編碼頻率分割多路處理解調(diào)器)
中文描述: 的DVB - T COFDM解調(diào)器(對地?cái)?shù)字視頻廣播正交編碼頻率分割多路處理解調(diào)器)
文件頁數(shù): 79/126頁
文件大小: 953K
代理商: L64780
Parameter Registers
4-27
4.4.7 Address Line 0x0D
TIM_OFFSET_LSB
Start Pulse Phase Offset (LSB)
The start pulse is a signal with a periodicity of every
FFT-MODE+GUARD 9 MHz cycles (in steady state). The
TIM_OFFSET bits adjust the phase of this signal in the
periodic window. The initial condition for the
TIM_OFFSET_LSB bits is 0x00.
R/W [7:0]
4.4.8 Address Line 0x0E
TIM_STALL
TIM Loop Updating Freeze
This bit determines if the Loop is working (this bit is 0) or
stalled (this bit is 1).
R/W 7
If the Loop is working, the integrator inside the L64780
updates its value.
If the Loop is stalled, the integrator inside the L64780
keeps its internal value constant, letting you set the
VCXO Frequency Offset by means of the TIM_CLK_INIT
bits.
The initial condition for the TIM_STALL bit is 0, normal
working mode.
TIM_POL
TIM VCXO Polarity
This bit determines the polarity of the external VCXO:
If the polarity is positive (this bit is 0), the output
frequency of the external VCXO increases with
increasing voltage from VCXOUT.
If the polarity is negative (this bit is 1), the output
frequency of the external VCXO decreases with
increasing voltage from VCXOUT.
R/W 6
The initial condition for the TIM_POL is 1, negative
polarity.
7
0
0x0D
TIM_OFFSET_LSB
7
6
5
0
0x0E
TIM_STALL
TIM_POL
TIM_OFFSET_MSB
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