參數(shù)資料
型號: L64780
廠商: LSI Corporation
英文描述: DVB-T COFDM Demodulator(對地數(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(對地數(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): 50/126頁
文件大?。?/td> 953K
代理商: L64780
3-14
Interfaces
3.3.1 DDFS Output
The DDFS output lets you probe signals after carrier frequency
compensation and prior to FFT processing. The signals are I and Q data
(in two’s complement format), a start pulse that delimits the COFDM
symbols (START), a data valid (DV) signal that accompanies valid data,
and an 18 MHz clock. These signals are mapped on the MUXOUTBUS.
See
Figure 3.23
.
3.3.2 FFT Output
The FFT output lets you probe data prior to Common Phase Error (CPE)
correction and Channel Equalization (CE). The signals are I and Q data
(in two’s complement format), a start pulse that delimits the COFDM
symbols (START), a data valid (DV) signal that accompanies valid data,
and a 36 MHz clock. These signals are mapped on the MUXOUTBUS.
See
Figure 3.24
.
3.3.3 AFC Output
The AFC output lets you probe data after Common Phase Error (CPE)
correction and prior to Channel Equalization (CE). The signals are I and
Q data (in two’s complement format), a start pulse that delimits the
COFDM symbols (START), a data valid (DV) signal that accompanies
valid data, and a 36 MHz clock. These signals are mapped on the
MUXOUTBUS. See
Figure 3.25
.
Figure 3.23 DDFS Output Mapping
26
25
24 23 22 21
12 11 10 9
0
18 MHz CLK START DV
0
Q[9:0]
0
I[9:0]
Figure 3.24 FFT Output Mapping
26
25
24 23 22 21
12 11 10 9
0
36 MHz CLK START DV
0
Q[9:0]
0
I[9:0]
Figure 3.25 AFC Output Mappings
26
25
24 23
12 11
0
36 MHz CLK START DV
Q[11:0]
I[11:0]
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