- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄373782 > ZL10036LDG1 (ZARLINK SEMICONDUCTOR INC) Digital Satellite Tuner with RF Bypass PDF資料下載
參數(shù)資料
| 型號： | ZL10036LDG1 |
| 廠商： | ZARLINK SEMICONDUCTOR INC |
| 元件分類： | 消費(fèi)家電 |
| 英文描述： | Digital Satellite Tuner with RF Bypass |
| 中文描述： | SPECIALTY CONSUMER CIRCUIT, QCC40 |
| 封裝： | 6 X 6 MM, LEAD FREE, QFN-40 |
| 文件頁數(shù)： | 26/38頁 |
| 文件大?。?/td> | 939K |
| 代理商： | ZL10036LDG1 |
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頁當(dāng)前第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁
ZL10036
Data Sheet
26
Zarlink Semiconductor Inc.
4.0 Software
In normal operation, only initialization, channel (frequency) changes and symbol rates require programming
intervention. Note that the PLL comparison frequency is set by the crystal frequency divided by the PLL reference
divide ratio. In the following examples of register settings, binary values are frequently used, indicated as e.g.,
0110
2
.
4.1 Power-on Software Initialization
a.
Bytes 2 + 3:
2
14
- 2
0
= desired channel frequency/PLL comparison frequency.
b.
Byte 4:
BA1:0 = 01
2
for initial baseband filter input level.
c.
Byte 4:
BG1:0 = 01
2
for target baseband filter output level.
d.
Byte 4:
LEN = 1 if the RF loop through is to be disabled.
e.
Byte 5:
R4:0 = PLL reference divider for desired comparison frequency.
f.
Bytes 8 - 10:
should be set to the following values: 0xD3, 0x40 & 0xE3 respectively.
g.
Byte 11:
this should be written twice with the following values:0x5B & 0xF9. The order in which these
values are written is not important.
h.
Byte 13:
BR4:0 = Crystal frequency in use (see also 4.3.3.1 on page 27).
4.2 Changing Channel
Bytes 2 + 3:
2
14
- 2
0
= Channel frequency/PLL comparison frequency.
4.3 Symbol Rate and Filter Calculations
4.3.1 Determining the Filter Bandwidth from the Symbol Rate
f
bw
= (
α
* symbol rate)/(2.0 * 0.8) +
f
offs
where:
α
= 1.35 for DVB or 1.20 for DSS, and is the roll-off of the raised-root cosine filter in the transmitter,
f
offs
is the total offset of the received signal due to all causes (LNB drift, synthesizer step size, etc) and is read back
from the demodulator (ZL10036),
and
f
bw
is the -3 dB roll-off of the filter for: 8 MHz
≤
f
bw
≤
35 MHz.
For low symbol rates, the energy content within the bandwidth of the filters reduces significantly so incrementing
the baseband post-filter gain helps recover the signal level for the demodulator.
N.B.
During channel acquisition or re-acquisition, the filter must be set to its maximum value.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ZL10039LCF1 | MULTIMETER, DIGITAL; Accuracy, AC current range:+/-(1.5% + 3d); Accuracy, AC voltage range:+/-(1.3% + 5d); Accuracy, DC current range:+/-(1.5% + 3d); Accuracy, DC voltage range:+/-(0.8% + 3d); Accuracy, resistance range:+/-(1.5% + RoHS Compliant: NA |
| ZL10039LCG | 100A clamp for PQ meters RoHS Compliant: NA |
| ZL10039LCG1 | Test, Recorder RoHS Compliant: NA |
| ZL10039 | Digital Satellite Tuner with RF Bypass |
| ZL10039LCF | Digital Satellite Tuner with RF Bypass |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ZL10037 | 制造商:ZARLINK 制造商全稱:Zarlink Semiconductor Inc 功能描述:Digital Satellite Tuner with RF Bypass |
| ZL10037LCF | 制造商:ZARLINK 制造商全稱:Zarlink Semiconductor Inc 功能描述:Digital Satellite Tuner with RF Bypass |
| ZL10037LCF1 | 制造商:ZARLINK 制造商全稱:Zarlink Semiconductor Inc 功能描述:Digital Satellite Tuner with RF Bypass |
| ZL10037LCG | 制造商:ZARLINK 制造商全稱:Zarlink Semiconductor Inc 功能描述:Digital Satellite Tuner with RF Bypass |
| ZL10037LCG1 | 制造商:ZARLINK 制造商全稱:Zarlink Semiconductor Inc 功能描述:Digital Satellite Tuner with RF Bypass |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。