參數(shù)資料
型號: 935264530157
廠商: NXP SEMICONDUCTORS
元件分類: 消費家電
英文描述: SPECIALTY CONSUMER CIRCUIT, PQFP100
封裝: SOT-317, MQFP-100
文件頁數(shù): 15/43頁
文件大?。?/td> 254K
代理商: 935264530157
1999 March 01
22
Philips Semiconductors
Product specication
Single chip DVB-C channel receiver
VES1820X
CARC[3:0]
Damping factor (
ξ)
Loop Bandwith
(BW/RS)
0
1.3
0.007
1
0.9
0.008
2
0.7
0.01
3
0.5
0.014
4
1.8
0.014
5
1.3
0.015
6
0.9
0.017
7
0.7
0.021
8
2.6
0.027
9
1.8
0.028
A
1.3
0.03
B
0.9
0.034
C
3.7
0.054
D
2.6
0.055
E
1.8
0.056
F
1.3
0.06
6. LOCKTHR
05
16
READ/WRITE
LTHR[7:0]
LTHR[7:0] is the threshold value used for carrier lock detection. LTHR[7:0] must
be set accordingly with the following table (decimal values) :
LTHR[7:0]
Modulation
135
16-QAM
100
32-QAM
70
64-QAM (default)
54
128-QAM
38
256-QAM
7. EQCONF1
06
16
READ/WRITE
POSI[2:0]
POSI[2:0] determines the position of the reference coefficient of the equalizer, as
shown in the following table :
POSI[2:0]
Reference
000
Tap N°2 (second tap)
001
Tap N°3
010
Tap N°4 (default)
011
Tap N°5
100
Tap N°6
101
Tap N°7
110
Tap N°8
111
Tap N°9
VALI
VALI determines the initialization value of the equalizer reference coefficient.
Default is VALI = 0.
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