參數(shù)資料
型號(hào): ADV7180
廠商: Analog Devices, Inc.
英文描述: 10-Bit, 4 x Oversampling SDTV Video Decoder
中文描述: 10位,4個(gè)采樣標(biāo)清視頻解碼器
文件頁(yè)數(shù): 40/112頁(yè)
文件大?。?/td> 1320K
代理商: ADV7180
ADV7180
IF FILTER COMPENSATION
IFFILTSEL[2:0], IF Filter Select, Address 0xF8 [2:0]
The IFFILTSEL[2:0] register allows the user to compensate for
SAW filter characteristics on a composite input, as would be
observed on tuner outputs. Figure 29 and Figure 30 show IF
filter compensation for NTSC and PAL, respectively.
The options for this feature are as follows:
Bypass mode
NTSC—consists of three filter characteristics
PAL—consists of three filter characteristics
See Table 103 for programming details.
Rev. A | Page 40 of 112
6
–12
2.0
5.0
0
FREQUENCY (MHz)
A
IF COMP FILTERS NTSC ZOOMED AROUND FSC
4
2
0
–2
–4
–6
–8
–10
2.5
3.0
3.5
4.0
4.5
Figure 29. NTSC IF Filter Compensation
6
–8
3.0
6.0
0
FREQUENCY (MHz)
A
IF COMP FILTERS PAL ZOOMEDAROUND FSC
4
2
0
–2
–4
–6
3.5
4.0
4.5
5.0
5.5
Figure 30. PAL IF Filter Compensation
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