- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄379870 > CE5038 (Intel Corp.) DVB-S2 Advanced Modulation Satellite Tuner PDF資料下載
參數(shù)資料
| 型號(hào)： | CE5038 |
| 廠商： | Intel Corp. |
| 英文描述： | DVB-S2 Advanced Modulation Satellite Tuner |
| 中文描述： | DVB - S2的先進(jìn)調(diào)制衛(wèi)星調(diào)諧器 |
| 文件頁數(shù)： | 33/41頁 |
| 文件大?。?/td> | 463K |
| 代理商： | CE5038 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁當(dāng)前第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁
CE5038
Data Sheet
32
Intel Corporation
4.3.3.2 Calculating the Value of BF
Equation 4 -
For non-integer values of BF, the result should be simply rounded to the nearest integer to give the value for BF6:1.
4.3.4 Filter Bandwidth Programming Examples
Example 1, conditions:
f
xtal
= 10.111 MHz,
f
bw
= 9 MHz
Because
f
bw
is below 28.2 MHz, the value of BR can be evaluated with equation 2:
xtal
575kHz
575kHz
This result should be rounded down to 17 to ensure that the result is not below the 575 kHz limit. Using this value
for BR, equation 4 can be evaluated:
The result can be rounded to the nearest value, i.e. BF = 18.
Example 2, conditions:
f
xtal
= 10.111 MHz,
f
bw
= 34.6 MHz
In this case,
f
bw
is above 28.2 MHz so using equation 3 to solve for BR:
f
bw
K
34.6MHz
Using equation 4, this time with the rounded-down value of 14 for BR:
bw
f
xtal
10.11MHz
Rounding to the nearest integer thus gives a value of 59 for BF.
4.4 Programming Sequence for Filter Bandwidth Changes
a.
Byte 6:
Set RSD = 0 to re-enable baseband filter resistor switching.
b.
Byte 7:
Set BF6:1 to the value derived in 4.3.3.2, “Calculating the Value of BF“ on page 32.
c.
Byte 6:
Set RSD = 1 to disable baseband filter resistor switching. This must happen no sooner than a
certain time after (b.). This minimum time equals BR/(32 * f
xtal
) seconds, where BR is the decimal value of
byte BR and f
xtal
is the reference crystal frequency.
BF
bw
f
xtal
f
BR
×
K
×
1
–
=
=
BR
------f
10.111MHz
------------------------------
17.583
=
=
=
BF
bw
f
xtal
f
BR
×
K
×
1
–
10.11MHz
------9MHz
17
×
1.257
×
1
–
18.02285
=
=
=
BR
-------
63
(
)
×
1
---
×
10.111MHz
------------------------------
63
(
)
×
1.257
--------------
×
14.647
=
=
=
BF
f
BR
×
K
×
1
–
34.6MHz
14
×
1.257
×
1
–
59.227
=
=
=
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| CE6353 | Nordig Unified DVB-T COFDM Terrestrial Demodulator for PC-TV and Hand-held Digital TV (DTV) |
| CE66P1 | 0.35um CMOS Technology |
| CE66P2 | 0.35um CMOS Technology |
| CE66P3 | 0.35um CMOS Technology |
| CE66P4 | 0.35um CMOS Technology |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| CE-50425-W | 制造商:Honeywell Sensing and Control 功能描述:Enclosed BasicSwitch |
| CE505A | 制造商:HEWLETT PACKARD 功能描述:HP 05A - CE505A - toner cartridge - 1 x black - 2300 pages - for LaserJet P2033, 制造商:Hewlett Packard Co 功能描述:HP 05A - CE505A - toner cartridge - 1 x black - 2300 pages - for LaserJet P2033, |
| CE50U | 制造商:ADAM-TECH 制造商全稱:Adam Technologies, Inc. 功能描述:CARD EDGE CONNECTORS .100 X .200 [2.54 X 5.08] CENTERLINE |
| CE511J2NOT1 | 制造商:Mmc Elec/Kck 功能描述: |
| CE512A6 | 制造商:Veeder-Root Company 功能描述: |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。