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參數(shù)資料
| 型號： | VES1820X |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 消費家電 |
| 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)： | 23/40頁 |
| 文件大?。?/td> | 182K |
| 代理商： | VES1820X |
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1999 March 01
23
Philips Semiconductors
Product specification
Single chip DVB-C channel receiver
VES1820X
ENADAPT
When ENADAPT is set to 0, the adaptation algorithm is inhibited. The equalizer is
running with the current value of the coefficients. When ENADAPT=1 (default), the
coefficients of the equalizer are continuously adjusted.
ENEQUAL
When ENEQUAL=0, the equalization function is inhibited. The equalizer
coefficients are fixed to their initialization values. The default is ENEQUAL = 1.
DFE
DFE determines wether the equalizer is configured as a linear transversal
equalizer (DFE=0) or a decision feedback equalizer (DFE=1, default).
8. EQSTEP
07
16
READ/WRITE
EQST1[2:0] sets the convergence step of the adaptation algorithm during the
acquisition phase. The higher EQST1[2:0] is, the higher the step is. Default value
is 2.
EQST1[2:0]
EQST2[2:0]
EQST2[2:0] sets the convergence step of the adaptation algorithm during the
tracking phase.The higher EQST2[2:0] is, the higher the step is. Default value is 3.
9. MSETH
08
16
READ/WRITE
MSETH[7:0] MSETH[7:0] is the threshold value used to switch from the acquisition phase to the
tracking phase. MSETH[7:0] must be set as follows (decimal values) :
MSETH[7:0]
162
116
67
52
35
Modulation
16-QAM
32-QAM
64-QAM (default)
128-QAM
256-QAM
10. AREF
09
16
READ/WRITE
AREF[7:0] is a reference parameter that optimizes the equalizer convergence
during the acquisition phase. AREF[7:0] must be set as follows (decimal values) :
AREF[7:0]
AREF[7:0]
145
150
106
126
107
Modulation
16-QAM
32-QAM
64-QAM (default)
128-QAM
256-QAM
11. BDR_LSB
0A
16
READ/WRITE
8 LSB bits : BDR[7:0] of the BAUD rate frequency to program.
BDR_LSB
12. BDR_MID
0B
16
READ/WRITE
8 MID bits : BDR[15:8] of the BAUD rate frequency to program.
BDR_MID
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| VES-220M1CTR-0505 | 功能描述:鋁質(zhì)電解電容器-SMD 16 Volts 22uF 20% 5x5.3 RoHS:否 制造商:Vishay/BC Components 電容:2200 uF 容差:20 % 電壓額定值:16 V ESR: 工作溫度范圍:- 55 C to + 150 C 尺寸:16 mm W x 16 mm L x 21 mm H 產(chǎn)品:High Temp Electrolytic Capacitors |
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