22 FN6739.2 September 5, 2012 CONTINUOUS UPDATE In the Continuous Update mode, MegaQ will cont" />
參數(shù)資料
型號： ISL59605IRZ-EVALZ
廠商： Intersil
文件頁數(shù)： 15/28頁
文件大?。?/td> 0K
描述： EVALUATION BOARD FOR ISL5960X
產(chǎn)品培訓模塊： ISL5960x MegaQ Overview
標準包裝： 1
系列： MegaQ™
主要目的： 視頻，纜線均衡器/放大器
嵌入式： 否
已用 IC / 零件： ISL59605IRZ
次要屬性： LED 狀態(tài)指示器
已供物品： 板
ISL59601, ISL59602, ISL59603, ISL59604, ISL59605
22
FN6739.2
September 5, 2012
CONTINUOUS UPDATE
In the Continuous Update mode, MegaQ will continuously try to
find the optimum equalization solution. When the equalization
has settled for 100 sequential video lines with no changes, the
LOCKED pin will go high. However once lock is achieved, noise
and average-picture-level changes may cause the device to
unlock, causing some image perturbation while MegaQ
re-equalizes.
The Continuous Update mode is enabled whenever the FREEZE
pin is set to a logic low (grounded).
Polarity Detection and Correction
MegaQ features polarity detection and correction,
automatically detecting incorrectly-wired input signals and
inverting the signal inside the IC as necessary. The detected
polarity is indicated by the state of the INVERT pin.
The INVERT pin has 2 modes of operation. It is typically used to
indicate whether or not the incoming signal is inverted (the “+”
signal on the “-” input and vice-versa). The state of the invert
signal is then used to tell the signal processing logic whether or
not to invert the signal in the signal path.
A logic high on INVERT indicates that the positive differential
input signal is on IN- (pin 5) and the negative differential input
signal is on IN+ (pin 3). A logic low indicates nominal polarity.
However the unique design of the INVERT I/O pin (Figure 48) also
allows MegaQ’s internal inversion detector to be overdriven
externally, forcing MegaQ to invert or not invert the signal
regardless of the state of the inversion detection function. This is
not necessary in normal operation, but it may improve
performance in particularly noisy environments when the polarity
of the signal is guaranteed to be correct.
The COLOR Pin
The color pin has 2 modes of operation. It is typically used to
indicate whether or not the incoming signal has a colorburst or
not. The state of the color signal is then used to tell the signal
processing logic whether or not it can rely on the presence of a
colorburst signal. A logic high indicates a color signal; a logic low
indicates monochrome.
However the unique design of the COLOR I/O pin (Figure 49) also
allows MegaQ’s internal color detector to be overdriven
externally. This is not necessary in normal operation, but it may
improve performance in particularly noisy environments when
the signal type is predetermined.
Monochrome Video Signals
MegaQ will equalize monochrome signals to the same distance
as color signals. However due to the high level of noise past
~4800 feet, the COLOR and LOCKED indicators may become
invalid for monochrome signals. The device will still equalize
properly if this occurs.
Security Cameras
MegaQ is ideal for security camera installations.
The automatic adaptive equalizer doesn't need any active silicon
on the transmit side of the cable, enabling upgrading of older
installations without having to touch the installed camera base,
including older monochrome cameras.
MegaQ automatically adjusts for wiring polarity errors as well
as adjusts for optimum image quality. These features eliminates
the need for the installer to make any adjustments.
With an extended equalization range of 5300ft, the ISL59605
enables cameras to be placed in even more remote locations,
enabling coverage of up to three square miles from a single
monitoring station.
Additional Equalization Modes Available
With the Serial Interface
In addition to the Lock Until Reset and Continuous Update
modes, software control of MegaQ through the SPI interface
adds a Lock Until Signal Loss mode and a Manual Equalization
mode.
Note: When controlling MegaQ through the SPI interface, the
external FREEZE pin must be tied to ground (logic low). Failure to
keep FREEZE at a logic low will prevent the software controls
from working properly.
All of the equalization modes are selected via the two “Locking
Mode/Manual Length Enable” register bits, 0x05[1:0].
CONTINUOUS UPDATE
Continuous Update mode is entered by setting address
0x05[1:0] = 00b. Continuous Update behavior is the same as
described in the stand-alone mode.
INVERSION
DETECTION
LOGIC
13k
ISL5960x
SIGNAL
PROCESSING
INVERT
PIN
FIGURE 48. INVERT PIN STRUCTURE
COLOR
DETECTION
LOGIC
13k
ISL5960x
SIGNAL
PROCESSING
COLOR
PIN
FIGURE 49. COLOR PIN STRUCTURE
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相關代理商/技術參數(shù)
參數(shù)描述
ISL59605IRZ-T7 功能描述:IC VIDEO EQUALIZER 20-QFN RoHS:是 類別:集成電路 (IC) >> 線性 - 視頻處理 系列:MegaQ™ 產(chǎn)品變化通告:Product Discontinuation 07/Mar/2011 標準包裝:3,000 系列:OMNITUNE™ 類型:調諧器 應用:移動電話，手機，視頻顯示器 安裝類型:表面貼裝 封裝/外殼:65-WFBGA 供應商設備封裝:PG-WFSGA-65 包裝:帶卷 (TR) 其它名稱:SP000365064
ISL59605IRZ-T7A 功能描述:IC VIDEO EQUALIZER 20-QFN RoHS:是 類別:集成電路 (IC) >> 線性 - 視頻處理 系列:MegaQ™ 產(chǎn)品變化通告:Product Discontinuation 07/Mar/2011 標準包裝:3,000 系列:OMNITUNE™ 類型:調諧器 應用:移動電話，手機，視頻顯示器 安裝類型:表面貼裝 封裝/外殼:65-WFBGA 供應商設備封裝:PG-WFSGA-65 包裝:帶卷 (TR) 其它名稱:SP000365064
ISL59605-SPI-EVALZ 功能描述:EVAL BOARD FOR ISL5960X RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 評估演示板和套件 系列:* 標準包裝:1 系列:PCI Express® (PCIe) 主要目的:接口，收發(fā)器，PCI Express 嵌入式:- 已用 IC / 零件:DS80PCI800 主要屬性:- 次要屬性:- 已供物品:板
ISL5960X-EVALZ 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:MegaQ: An Automatic Composite Video Equalizer, Fully-Adaptive to 1 Mile (1600m)
ISL5960X-SPI-EVALZ 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:MegaQ: An Automatic Composite Video Equalizer, Fully-Adaptive to 1 Mile (1600m)
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