參數(shù)資料
型號(hào): VES1820X
廠商: NXP SEMICONDUCTORS
元件分類: 消費(fèi)家電
英文描述: Single chip DVB-C channel receiver(單片DVB-C頻道接收器)
中文描述: SPECIALTY CONSUMER CIRCUIT, PQFP100
封裝: MQFP-100
文件頁數(shù): 22/40頁
文件大小: 182K
代理商: VES1820X
1999 March 01
22
Philips Semiconductors
Product specification
Single chip DVB-C channel receiver
VES1820X
CARC[3:0]
Damping factor (
ξ
)
Loop Bandwith
(BW/RS)
0.007
0.008
0.01
0.014
0.014
0.015
0.017
0.021
0.027
0.028
0.03
0.034
0.054
0.055
0.056
0.06
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
1.3
0.9
0.7
0.5
1.8
1.3
0.9
0.7
2.6
1.8
1.3
0.9
3.7
2.6
1.8
1.3
6. LOCKTHR
05
16
READ/WRITE
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]
LTHR[7:0]
135
100
70
54
38
Modulation
16-QAM
32-QAM
64-QAM (default)
128-QAM
256-QAM
7. EQCONF1
06
16
READ/WRITE
POSI[2:0] determines the position of the reference coefficient of the equalizer, as
shown in the following table :
POSI[2:0]
POSI[2:0]
000
001
010
011
100
101
110
111
Reference
Tap N°2 (second tap)
Tap N°3
Tap N°4 (default)
Tap N°5
Tap N°6
Tap N°7
Tap N°8
Tap N°9
VALI
VALI determines the initialization value of the equalizer reference coefficient.
Default is VALI = 0.
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