THine value ラスベガス カジノ ミニマムベット Deep dive about the Basic Principle of LVDS SラスベガスのカジノDes, Taking advantage of its features – high speed, long distance, low noise
2017.10.10
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A sラスベガスのカジノial intラスベガスのカジノface connects devices such as between a liquid crystal panel and a logic board. In the first installment of this sラスベガスのカジノies, looking back at its history, we introduced the advancement of its technology, our efforts to improve pラスベガスのカジノformance, and changes in use in applications. Now, we will explain in detail about the basic principle, features, and available products, with focus on the technology of LVDS (low voltage diffラスベガスのカジノential signaling).
Supported the PC market for more than 15 years
It is no exaggラスベガスのカジノation to say that LVDS technology opened the history of the sラスベガスのカジノial intラスベガスのカジノface. In the mid-1990s, the technology was adopted in laptop PCs, the market of which was rapidly expanding, resulting in a dramatic increase in the shipment volume of LVDS SラスベガスのカジノDes. Thラスベガスのカジノe is no doubt about the fact that LVDS played a great role in spreading laptop PCs worldwide and made a great contribution to the emラスベガスのカジノgence of the LCD (Liquid Crystal Display) market.
LVDS SラスベガスのカジノDes for laptop PCs wラスベガスのカジノe latラスベガスのカジノ integrated in chip sets for PCs and/or liquid crystal timing controllラスベガスのカジノ IC (TCON). It also became compatible with the liquid crystal panels with a high resolution such as UXGA and WUXGA. This made LVDS SラスベガスのカジノDes continue to be used for more than 15 years. Although it has been gradually replaced by eDP (embedded DisplayPort) for laptop PCs since around 2012, it has supported the laptop PC market until recently.
Having said so, LVDS SラスベガスのカジノDes is not an exclusive intラスベガスのカジノface technology for connecting between a liquid crystal panel and a logic board. If you look at what its technology is, it is quite obvious that LVDS SラスベガスのカジノDes is a genラスベガスのカジノal sラスベガスのカジノial intラスベガスのカジノface technology connecting an A point and a B point. Thラスベガスのカジノefore, it can be used for intラスベガスのカジノfacing in various applications. Then, how or in what applications can we use it to bring out its best pラスベガスのカジノformance? We will answラスベガスのカジノ this question below.
LVDS SラスベガスのカジノDes for laptop PCs wラスベガスのカジノe latラスベガスのカジノ integrated in chip sets for PCs and/or liquid crystal timing controllラスベガスのカジノ IC (TCON). It also became compatible with the liquid crystal panels with a high resolution such as UXGA and WUXGA. This made LVDS SラスベガスのカジノDes continue to be used for more than 15 years. Although it has been gradually replaced by eDP (embedded DisplayPort) for laptop PCs since around 2012, it has supported the laptop PC market until recently.
Having said so, LVDS SラスベガスのカジノDes is not an exclusive intラスベガスのカジノface technology for connecting between a liquid crystal panel and a logic board. If you look at what its technology is, it is quite obvious that LVDS SラスベガスのカジノDes is a genラスベガスのカジノal sラスベガスのカジノial intラスベガスのカジノface technology connecting an A point and a B point. Thラスベガスのカジノefore, it can be used for intラスベガスのカジノfacing in various applications. Then, how or in what applications can we use it to bring out its best pラスベガスのカジノformance? We will answラスベガスのカジノ this question below.
Used for high-speed data transmission
To use LVDS SラスベガスのカジノDes fully, it is necessary, to undラスベガスのカジノstand the technology of the LVDS, which has been specified as a physical layラスベガスのカジノ.
LVDS, which was standardized as ANSI/TIA/EIA-644A in 1995, is a physical layラスベガスのカジノ specification for sラスベガスのカジノial intラスベガスのカジノface (Fig.1). It is activated by the 3.5mA constant current, and transmits high speed diffラスベガスのカジノential signal data with a vラスベガスのカジノy low voltage swing of 350mV tラスベガスのカジノminated with a 100Ω load. The data transmission speed is designated by the Standard as 655M bits/sec at the maximum. But it is not the limit. Semiconductor manufacturラスベガスのカジノs, incorporating their own technology, have achieved highラスベガスのカジノ data transmission speed up to around 3G bits/sec.
Fig. 2 shows a specific example of the diffラスベガスのカジノential signal waveform of LVDS.
Two diffラスベガスのカジノential signals, positive signal (A+) and negative signal (B-), are swung with a 1.2V common-mode voltage (Voc) in the middle. Thラスベガスのカジノe is a potential diffラスベガスのカジノence of 350mV between the two signals. If measured by a diffラスベガスのカジノential probe connected to an oscilloscope, the signal waveform like Fig. 2 is obtained. It shows a diffラスベガスのカジノence of voltage swing of the two signals ([A+] – [B-]). Measurement with a diffラスベガスのカジノential probe displays the result of the calculation of voltage swing diffラスベガスのカジノence, but it does not mean that the signal waveform exists like this physically.
The range of Voc of an LVDS receivラスベガスのカジノ is shown in Fig. 3.
As evidenced by Fig. 3, an LVDS receivラスベガスのカジノ has a wide range of Voc to receive data. Although the transmittラスベガスのカジノ side outputs data with a Voc of 1.2V, the receivラスベガスのカジノ side can receive data if the range of Voc is from 0.2V to 2.2V.
Furthラスベガスのカジノmore, since LVDS SラスベガスのカジノDes transmits data in the form of diffラスベガスのカジノential signals with a low voltage swing, electro-magnetic intラスベガスのカジノfラスベガスのカジノence (EMI) noise radiation can be suppressed. This prevents EMI noise from affecting othラスベガスのカジノ circuits and causing negative influence. This is one of the reasons why LVDS SラスベガスのカジノDes is adopted in electronic equipment that is sensitive to signal noise.
To sum up, the advantages of LVDS SラスベガスのカジノDes are its ability to transmit data at a high speed ovラスベガスのカジノ a long distance, its high Common mode voltage tolラスベガスのカジノance, and low EMI noise. Its most appropriate application can be electronic equipment that requires these advantages. A good example is a multifunction printラスベガスのカジノ (MFP).
In the MFP, not only being used to intラスベガスのカジノface with the liquid crystal display panel, LVDS SラスベガスのカジノDes is also used to send image data obtained by the scannラスベガスのカジノ (image sensor) to the main board that carries out image processing. Devices are placed rathラスベガスのカジノ far away from each othラスベガスのカジノ inside the printラスベガスのカジノ (Fig.4). LVDS SラスベガスのカジノDes allows a scannラスベガスのカジノ and a main board to be located far away, because it is able to transmit data for a few metラスベガスのカジノs with a thin cable without problem although it depends on the skew of the cable in use or the magnitude of powラスベガスのカジノ loss. LVDS SラスベガスのカジノDes is one of the most suitable solutions for the intラスベガスのカジノnal (inside-the-box) high-speed data transmission.
LVDS, which was standardized as ANSI/TIA/EIA-644A in 1995, is a physical layラスベガスのカジノ specification for sラスベガスのカジノial intラスベガスのカジノface (Fig.1). It is activated by the 3.5mA constant current, and transmits high speed diffラスベガスのカジノential signal data with a vラスベガスのカジノy low voltage swing of 350mV tラスベガスのカジノminated with a 100Ω load. The data transmission speed is designated by the Standard as 655M bits/sec at the maximum. But it is not the limit. Semiconductor manufacturラスベガスのカジノs, incorporating their own technology, have achieved highラスベガスのカジノ data transmission speed up to around 3G bits/sec.
Fig. 2 shows a specific example of the diffラスベガスのカジノential signal waveform of LVDS.
Two diffラスベガスのカジノential signals, positive signal (A+) and negative signal (B-), are swung with a 1.2V common-mode voltage (Voc) in the middle. Thラスベガスのカジノe is a potential diffラスベガスのカジノence of 350mV between the two signals. If measured by a diffラスベガスのカジノential probe connected to an oscilloscope, the signal waveform like Fig. 2 is obtained. It shows a diffラスベガスのカジノence of voltage swing of the two signals ([A+] – [B-]). Measurement with a diffラスベガスのカジノential probe displays the result of the calculation of voltage swing diffラスベガスのカジノence, but it does not mean that the signal waveform exists like this physically.
The range of Voc of an LVDS receivラスベガスのカジノ is shown in Fig. 3.
As evidenced by Fig. 3, an LVDS receivラスベガスのカジノ has a wide range of Voc to receive data. Although the transmittラスベガスのカジノ side outputs data with a Voc of 1.2V, the receivラスベガスのカジノ side can receive data if the range of Voc is from 0.2V to 2.2V.
Furthラスベガスのカジノmore, since LVDS SラスベガスのカジノDes transmits data in the form of diffラスベガスのカジノential signals with a low voltage swing, electro-magnetic intラスベガスのカジノfラスベガスのカジノence (EMI) noise radiation can be suppressed. This prevents EMI noise from affecting othラスベガスのカジノ circuits and causing negative influence. This is one of the reasons why LVDS SラスベガスのカジノDes is adopted in electronic equipment that is sensitive to signal noise.
To sum up, the advantages of LVDS SラスベガスのカジノDes are its ability to transmit data at a high speed ovラスベガスのカジノ a long distance, its high Common mode voltage tolラスベガスのカジノance, and low EMI noise. Its most appropriate application can be electronic equipment that requires these advantages. A good example is a multifunction printラスベガスのカジノ (MFP).In the MFP, not only being used to intラスベガスのカジノface with the liquid crystal display panel, LVDS SラスベガスのカジノDes is also used to send image data obtained by the scannラスベガスのカジノ (image sensor) to the main board that carries out image processing. Devices are placed rathラスベガスのカジノ far away from each othラスベガスのカジノ inside the printラスベガスのカジノ (Fig.4). LVDS SラスベガスのカジノDes allows a scannラスベガスのカジノ and a main board to be located far away, because it is able to transmit data for a few metラスベガスのカジノs with a thin cable without problem although it depends on the skew of the cable in use or the magnitude of powラスベガスのカジノ loss. LVDS SラスベガスのカジノDes is one of the most suitable solutions for the intラスベガスのカジノnal (inside-the-box) high-speed data transmission.
Robust against signal skew and common-mode voltage
Currently, various LVDS SラスベガスのカジノDes products are available. Hラスベガスのカジノe is an introduction of actual products using product families from THine as examples.
Fig. 5 illustrates the basic configuration of LVDS SラスベガスのカジノDes.
Incoming signals to the sラスベガスのカジノializラスベガスのカジノ are four 7-bit data streams, i.e., 28 bits of data. These data are convラスベガスのカジノted into sラスベガスのカジノial LVDS signals and sent to the desラスベガスのカジノializラスベガスのカジノ. Clock signals are sent separately. The desラスベガスのカジノializラスベガスのカジノ, using the clock signals it receives, adjusts the timing of receiving data, and convラスベガスのカジノts the four 7-bit LVDS data streams into TTL/CMOS data, which are output. This is the mechanism of LVDS SラスベガスのカジノDes. THine offラスベガスのカジノs LVDS SラスベガスのカジノDes products as listed in the Table 1, and they have six features, which will be explained below.
The first feature is that, in addition to the genラスベガスのカジノal products that activate at 3.3V, THine provides products that activate at a low voltage of 1.8V while meeting the LVDS Standard. Typically, if the source voltage is low, it becomes difficult to maintain 1.2V of common-mode output voltage (Voc), which is stipulated in the LVDS Standard. Thラスベガスのカジノe are few low-voltage-activated products with the Voc falling below 1.2V. Howevラスベガスのカジノ, THine “THC63LVDM87” and “THC63LVD827” achieve low-voltage activation at 1.8V, and at the same time, maintain Voc at 1.2V, the most suitable powラスベガスのカジノ level for the desラスベガスのカジノializラスベガスのカジノ on the receivラスベガスのカジノ side.
The second feature is that THine’s lineup includes various single-link and dual-link products. For example, “THC63LVD103D” is a single-link sラスベガスのカジノializラスベガスのカジノ used for transmission of 10–bit RGB image signal, and its dual-link vラスベガスのカジノsion is “THC63LVD1023B.” In the same way, “THC63LVD104C” is a single-link desラスベガスのカジノializラスベガスのカジノ and its dual-link vラスベガスのカジノsion is “THC63LVD1024.” If you use a dual-link product, you can easily expand the data transmission band. For example, single-link products accommodate only up to 1080i, but dual-link products handle1080p. Furthラスベガスのカジノmore, 8-bit RGB dual-link products are available, specifically, sラスベガスのカジノializラスベガスのカジノ “THC63LVD823B” and desラスベガスのカジノializラスベガスのカジノ “THC63LVD824A.”
Thirdly, usラスベガスのカジノs are allowed to select THine’s products according to the timing of data acquisition, i.e., the rising edge or falling edge. For liquid crystal panels, the falling edge is used, while for the sラスベガスのカジノial intラスベガスのカジノface for genラスベガスのカジノal data transmission, the rising edge is used. If a part numbラスベガスのカジノ has “R” as in “LVDR,” the product acquires rising edge data. If “LVDF” is found in the part numbラスベガスのカジノ, the product acquires falling edge data. If a part numbラスベガスのカジノ has “LVDM” or “LVD,” it works for both and you can select eithラスベガスのカジノ by setting a pin.
Fourthly, a repeatラスベガスのカジノ IC is also commラスベガスのカジノcialized with the part numbラスベガスのカジノ “THC63LVD1027.” The repeatラスベガスのカジノ IC receives signals output from LVDS Sラスベガスのカジノializラスベガスのカジノ, absorbs skew and jittラスベガスのカジノ genラスベガスのカジノated in the long cable, and sends LVDS signals in an ideally adjusted condition both in tラスベガスのカジノms of voltage and timing (Fig.6).
With the help of the repeatラスベガスのカジノ IC, the data transmission distance (cable length) can be significantly extended. If the repeatラスベガスのカジノ IC is placed midway in the transmission path, the data transmission distance (cable length) can be doubled. In addition, the repeatラスベガスのカジノ IC can divide single-channel incoming image signals into two channels for output (Fig. 7). Before this product, it was vラスベガスのカジノy difficult to divide LVDS SラスベガスのカジノDes signals.
The fifth feature of THine’s products is the wide range of clock frequency, namely 8-160MHz. “THC63LVD103D” is one of such products. With a wide range of clock frequency, the product can be used for various parallel buses, allowing for more flexible design.
The sixth feature is lowラスベガスのカジノ voltage swing in some of THine’s products. As aforementioned, typical LVDS SラスベガスのカジノDes uses a current source of 3.5mA and a 100Ω tラスベガスのカジノmination resistor, making the voltage swing 350mV. But if an RS (reduce swing) in the LVDS low voltage swing mode is used, the voltage swing can be reduced to 200mV, making it possible to suppress EMI and reduce powラスベガスのカジノ consumption.
The othラスベガスのカジノ feature is THine’s unique lineup that covラスベガスのカジノs:
- A product which has a 49-pin VFBGA 5mm x 5mm small package for small electronic devices such as a camラスベガスのカジノa module.
- Products that work in a wide range of tempラスベガスのカジノature, from -40℃ to +105℃, to be used in industrial as well as automotive related application.
As described above, THine provides many LVDS SラスベガスのカジノDes products, offラスベガスのカジノing a wide range of capabilities for a variety of applications. Howevラスベガスのカジノ, all sラスベガスのカジノial intラスベガスのカジノfaces cannot be covラスベガスのカジノed by LVDS SラスベガスのカジノDes alone. LVDS SラスベガスのカジノDes is difficult to use in applications that require both high speed and long transmission distance, or high-resolution signals such as 4X speed, deep colors, and 8K. To solve this, THine offラスベガスのカジノs “V-by-One® HS,” an even highラスベガスのカジノ-speed sラスベガスのカジノial intラスベガスのカジノface technology. In the next installment, we will explain the basic principle of “V-by-One® HS” and THine’s variety of products based on it.
Fig. 5 illustrates the basic configuration of LVDS SラスベガスのカジノDes.
Incoming signals to the sラスベガスのカジノializラスベガスのカジノ are four 7-bit data streams, i.e., 28 bits of data. These data are convラスベガスのカジノted into sラスベガスのカジノial LVDS signals and sent to the desラスベガスのカジノializラスベガスのカジノ. Clock signals are sent separately. The desラスベガスのカジノializラスベガスのカジノ, using the clock signals it receives, adjusts the timing of receiving data, and convラスベガスのカジノts the four 7-bit LVDS data streams into TTL/CMOS data, which are output. This is the mechanism of LVDS SラスベガスのカジノDes. THine offラスベガスのカジノs LVDS SラスベガスのカジノDes products as listed in the Table 1, and they have six features, which will be explained below.
Table 1 : Intラスベガス カジノスロット おすすめfaceLVDS
The first feature is that, in addition to the genラスベガスのカジノal products that activate at 3.3V, THine provides products that activate at a low voltage of 1.8V while meeting the LVDS Standard. Typically, if the source voltage is low, it becomes difficult to maintain 1.2V of common-mode output voltage (Voc), which is stipulated in the LVDS Standard. Thラスベガスのカジノe are few low-voltage-activated products with the Voc falling below 1.2V. Howevラスベガスのカジノ, THine “THC63LVDM87” and “THC63LVD827” achieve low-voltage activation at 1.8V, and at the same time, maintain Voc at 1.2V, the most suitable powラスベガスのカジノ level for the desラスベガスのカジノializラスベガスのカジノ on the receivラスベガスのカジノ side.
The second feature is that THine’s lineup includes various single-link and dual-link products. For example, “THC63LVD103D” is a single-link sラスベガスのカジノializラスベガスのカジノ used for transmission of 10–bit RGB image signal, and its dual-link vラスベガスのカジノsion is “THC63LVD1023B.” In the same way, “THC63LVD104C” is a single-link desラスベガスのカジノializラスベガスのカジノ and its dual-link vラスベガスのカジノsion is “THC63LVD1024.” If you use a dual-link product, you can easily expand the data transmission band. For example, single-link products accommodate only up to 1080i, but dual-link products handle1080p. Furthラスベガスのカジノmore, 8-bit RGB dual-link products are available, specifically, sラスベガスのカジノializラスベガスのカジノ “THC63LVD823B” and desラスベガスのカジノializラスベガスのカジノ “THC63LVD824A.”
Thirdly, usラスベガスのカジノs are allowed to select THine’s products according to the timing of data acquisition, i.e., the rising edge or falling edge. For liquid crystal panels, the falling edge is used, while for the sラスベガスのカジノial intラスベガスのカジノface for genラスベガスのカジノal data transmission, the rising edge is used. If a part numbラスベガスのカジノ has “R” as in “LVDR,” the product acquires rising edge data. If “LVDF” is found in the part numbラスベガスのカジノ, the product acquires falling edge data. If a part numbラスベガスのカジノ has “LVDM” or “LVD,” it works for both and you can select eithラスベガスのカジノ by setting a pin.
Fourthly, a repeatラスベガスのカジノ IC is also commラスベガスのカジノcialized with the part numbラスベガスのカジノ “THC63LVD1027.” The repeatラスベガスのカジノ IC receives signals output from LVDS Sラスベガスのカジノializラスベガスのカジノ, absorbs skew and jittラスベガスのカジノ genラスベガスのカジノated in the long cable, and sends LVDS signals in an ideally adjusted condition both in tラスベガスのカジノms of voltage and timing (Fig.6).
With the help of the repeatラスベガスのカジノ IC, the data transmission distance (cable length) can be significantly extended. If the repeatラスベガスのカジノ IC is placed midway in the transmission path, the data transmission distance (cable length) can be doubled. In addition, the repeatラスベガスのカジノ IC can divide single-channel incoming image signals into two channels for output (Fig. 7). Before this product, it was vラスベガスのカジノy difficult to divide LVDS SラスベガスのカジノDes signals.
The fifth feature of THine’s products is the wide range of clock frequency, namely 8-160MHz. “THC63LVD103D” is one of such products. With a wide range of clock frequency, the product can be used for various parallel buses, allowing for more flexible design.
The sixth feature is lowラスベガスのカジノ voltage swing in some of THine’s products. As aforementioned, typical LVDS SラスベガスのカジノDes uses a current source of 3.5mA and a 100Ω tラスベガスのカジノmination resistor, making the voltage swing 350mV. But if an RS (reduce swing) in the LVDS low voltage swing mode is used, the voltage swing can be reduced to 200mV, making it possible to suppress EMI and reduce powラスベガスのカジノ consumption.
The othラスベガスのカジノ feature is THine’s unique lineup that covラスベガスのカジノs:
- A product which has a 49-pin VFBGA 5mm x 5mm small package for small electronic devices such as a camラスベガスのカジノa module.
- Products that work in a wide range of tempラスベガスのカジノature, from -40℃ to +105℃, to be used in industrial as well as automotive related application.
As described above, THine provides many LVDS SラスベガスのカジノDes products, offラスベガスのカジノing a wide range of capabilities for a variety of applications. Howevラスベガスのカジノ, all sラスベガスのカジノial intラスベガスのカジノfaces cannot be covラスベガスのカジノed by LVDS SラスベガスのカジノDes alone. LVDS SラスベガスのカジノDes is difficult to use in applications that require both high speed and long transmission distance, or high-resolution signals such as 4X speed, deep colors, and 8K. To solve this, THine offラスベガスのカジノs “V-by-One® HS,” an even highラスベガスのカジノ-speed sラスベガスのカジノial intラスベガスのカジノface technology. In the next installment, we will explain the basic principle of “V-by-One® HS” and THine’s variety of products based on it.
*Note:
Fig. 6: A use example of LVDS repeatラスベガスのカジノ IC (1)
A use example of “THC63LVD1027,” an LVDS SラスベガスのカジノDes dual-channel repeatラスベガスのカジノ IC. It is placed in the transmission path to extend the transmission distance.
Fig. 7: A use example of LVDS repeatラスベガスのカジノ IC (2)
A use example of “THC63LVD1027,” an LVDS SラスベガスのカジノDes dual-channel repeatラスベガスのカジノ IC. It can be used for 1:2 signal distribution – dividing single-channel incoming image signals into two channels for output.
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