bet88 kèo nhà cái bet88 nhà cái V-by-One® bet88 kèo nhà cái vượt xa LVDS, làm cho sự hiện diện của nó được biết đến trong các ứng dụng y tế, ô tô và nhiều ứng dụng khác
2018.02.21
- Bài viết
- Cột
V-by-One® bet88 kèo nhà cái đã trở thành tiêu chuẩn thực tế trong công nghệ giao diện tốc độ cao vì hầu hết tất cả TV LCD hiện nay đều áp dụng công nghệ này để truyền hình ảnh/video. Ngoài TV LCD, nhiều ứng dụng khác nhau cũng đang sử dụng V-by. -One® bet88 kèo nhà cái.
Độ bền mã hóa 8B/10B
Nhiều ứng dụng tận dụng V-by-One® bet88 kèo nhà cái để truyền dữ liệu tốc độ cao nhờ tốc độ dữ liệu cao (4 Gbps) và độ bền cao
Giao diện
8B/10B coding provides high robustness. Why?
One reason is that conversion from 8 bits to 10 bits for the 8B10B code map can attenuate 20% of the low-frequency components. This is very effective for reducing inter-symbol interference (ISI) jitter, given the relationship between high-voltage/low-frequency components and attenuated low-voltage/high-frequency components. This enhances signal integrity by reducing ISI jitter when the data rate exceeds the Giga-bit level and where a long cable results in large signal attenuation.
The other reason is that 8B/10B coding secures almost complete DC balance for good signal integrity in AC coupling. This solves problems related to DC balance for data coding (e.g. baseline wander, DC imbalance, killer packet, pathological pattern).
In 8B/10B coding, 8-bit input data are divided into 3 upper bits and 5 lower bits. The 3 bits are converted into 4 bits (3B/4B coding), while the 5 bits are converted into 6 bits (5B/6B coding). The data is converted into a symbol according to a predetermined conversion table. Two types of code (plus and minus) are prepared for each symbol, called “RD +/- (Running Disparity)” in the 8B/10B code table. If the previous running disparity is positive, a minus symbol is output, and if negative a plus symbol is output. The conversion table defines the maximum length of the same value (0 or 1) as 5 consecutive bits or more to prevent unbalanced signal coding. The difference between the number of 0’s and 1’s is always guaranteed to be within ±1, which can secure almost complete DC balance.
Giao diện
8B/10B coding provides high robustness. Why?
One reason is that conversion from 8 bits to 10 bits for the 8B10B code map can attenuate 20% of the low-frequency components. This is very effective for reducing inter-symbol interference (ISI) jitter, given the relationship between high-voltage/low-frequency components and attenuated low-voltage/high-frequency components. This enhances signal integrity by reducing ISI jitter when the data rate exceeds the Giga-bit level and where a long cable results in large signal attenuation.
The other reason is that 8B/10B coding secures almost complete DC balance for good signal integrity in AC coupling. This solves problems related to DC balance for data coding (e.g. baseline wander, DC imbalance, killer packet, pathological pattern).
In 8B/10B coding, 8-bit input data are divided into 3 upper bits and 5 lower bits. The 3 bits are converted into 4 bits (3B/4B coding), while the 5 bits are converted into 6 bits (5B/6B coding). The data is converted into a symbol according to a predetermined conversion table. Two types of code (plus and minus) are prepared for each symbol, called “RD +/- (Running Disparity)” in the 8B/10B code table. If the previous running disparity is positive, a minus symbol is output, and if negative a plus symbol is output. The conversion table defines the maximum length of the same value (0 or 1) as 5 consecutive bits or more to prevent unbalanced signal coding. The difference between the number of 0’s and 1’s is always guaranteed to be within ±1, which can secure almost complete DC balance.
V-by-One® bet88 kèo nhà cái trong thiết bị ô tô, y tế và máy in
Một trong những ứng dụng chính của V-by-One® bet88 kèo nhà cái là trong thiết bị ô tô (máy ảnh ô tô). Nhờ tốc độ truyền dữ liệu rất nhanh 4 Gbps, V-by-One® bet88 kèo nhà cái có thể truyền dữ liệu có độ phân giải cao. cũng như hình ảnh được chụp bởi nhiều camera qua một dây cáp (Hình 2). Điều này giúp giảm cả chi phí và trọng lượng của xe, đồng thời nâng cao độ chắc chắn.
Y tế
Here is a specific example. Upon bridging an image sensor to a control board by V-by-One® bet88 kèo nhà cái, data can be transmitted even via copper cables 0.32 mm (AWG28) or 0.25 mm (AWG30) in diameter. Only V-by-One® bet88 kèo nhà cái enables the use of such thin cables several meters in length to transmit data. Thinner cables are flexible and easy for users to handle in a narrow space.
The data sheet of the SerDes chip supporting V-by-One® bet88 kèo nhà cái defines the names of such signals as DE (Data Enable), Hsync (Horizontal Synchronization), and Vsync (Vertical Synchronization), which control the transmission timing of image/video data. Therefore, some engineers may mistakenly think that V-by-One® bet88 kèo nhà cái is an interface dedicated to image/video data. Actually, V-by-One® bet88 kèo nhà cái is a common SerDes product with 8B/10B coding and widely suited for any type of data communication.
First, the Hsync and Vsync signals need not be used, as a device will only work with the DE signal used to insert K code (K28.5), which is one of the K codes and indicates the boundary of 10-bit signals. Again, just using DE as a control signal by inserting K28.5 is required for using V-by-One® bet88 kèo nhà cái as a general SerDes chip for data communication such as bus and data. V-by-One® bet88 kèo nhà cái is a “universal SerDes chip of up to 4-Gbps speed that adopts the 8B/10B coding method.”
V-by-One® bet88 kèo nhà cái PHY is similar to PCI Express Gen 2, which is also a clock-embedded technology using 8B/10B coding. The difference is that PCI Express Gen2 has a higher data transmission rate (5 Gbps) than that of V-by-One® bet88 kèo nhà cái (4Gbps) and must comply with the upper protocol layer.
Therefore, V-by-One® bet88 kèo nhà cái is more flexible than PCI Express when used as a high speed interface for general data communication. In addition, V-by-One® bet88 kèo nhà cái requires no handshaking processing and has no overhead. Furthermore, it can freely implement higher layer protocols as required.
Y tế
Here is a specific example. Upon bridging an image sensor to a control board by V-by-One® bet88 kèo nhà cái, data can be transmitted even via copper cables 0.32 mm (AWG28) or 0.25 mm (AWG30) in diameter. Only V-by-One® bet88 kèo nhà cái enables the use of such thin cables several meters in length to transmit data. Thinner cables are flexible and easy for users to handle in a narrow space.
The data sheet of the SerDes chip supporting V-by-One® bet88 kèo nhà cái defines the names of such signals as DE (Data Enable), Hsync (Horizontal Synchronization), and Vsync (Vertical Synchronization), which control the transmission timing of image/video data. Therefore, some engineers may mistakenly think that V-by-One® bet88 kèo nhà cái is an interface dedicated to image/video data. Actually, V-by-One® bet88 kèo nhà cái is a common SerDes product with 8B/10B coding and widely suited for any type of data communication.
First, the Hsync and Vsync signals need not be used, as a device will only work with the DE signal used to insert K code (K28.5), which is one of the K codes and indicates the boundary of 10-bit signals. Again, just using DE as a control signal by inserting K28.5 is required for using V-by-One® bet88 kèo nhà cái as a general SerDes chip for data communication such as bus and data. V-by-One® bet88 kèo nhà cái is a “universal SerDes chip of up to 4-Gbps speed that adopts the 8B/10B coding method.”
V-by-One® bet88 kèo nhà cái PHY is similar to PCI Express Gen 2, which is also a clock-embedded technology using 8B/10B coding. The difference is that PCI Express Gen2 has a higher data transmission rate (5 Gbps) than that of V-by-One® bet88 kèo nhà cái (4Gbps) and must comply with the upper protocol layer.
Therefore, V-by-One® bet88 kèo nhà cái is more flexible than PCI Express when used as a high speed interface for general data communication. In addition, V-by-One® bet88 kèo nhà cái requires no handshaking processing and has no overhead. Furthermore, it can freely implement higher layer protocols as required.
V-by-One® bet88 kèo nhà cái các loại
THine đã thương mại hóa nhiều loại IC phát/thu V-by-One® bet88 kèo nhà cái (Bảng 1).
THCV231 and THCV235 are transmitter ICs with the maximum data transmission rate per lane corresponding to the LVCMOS input signal of 4 Gbps (left side in Fig. 3). The clock frequency corresponds to a wide range from 24 M to 160 MHz. The interface of V-by-One® bet88 kèo nhà cái is basically one lane, though some products have multiple lanes, depending on the device. Users can select the interface according to the bandwidth required.
THCV231 and THCV235 differ in terms of their package. THCV231 is sealed in a 32-pin QFN, while THCV235 is placed in a 64-pin QFN. THCV231 was designed to be compatible with any electronic device requiring a small package. THCV236 is the receiver corresponding to these transmitters with the 64-pin QFN package (right side in Fig. 3), and outputs the LVCMOS signal.
LVDS
Their maximum data transmission rate is 3.4Gbps.
LVDS
LVDS
Recently THine released transmitter IC THCV241-Q compatible with MIPI® CSI-2 input signals. It has four input lanes of MIPI® CSI-2 and two output lanes for V-by-One® bet88 kèo nhà cái (Fig. 7). THCV241-Q was developed for environments where more automotive and surveillance cameras are gradually implementing MIPI® CSI-2 interfaces. THCV241-Q realizes longer cable length and fewer lanes.
The number of pixels actually becomes larger and the frame speed becomes much faster in many applications such as automotive cameras, surveillance cameras, and machine vision. Therefore, V-by-One® bet88 kèo nhà cái is not only for LCD-TVs, but will play a major role in a wide market.
THCV231 and THCV235 are transmitter ICs with the maximum data transmission rate per lane corresponding to the LVCMOS input signal of 4 Gbps (left side in Fig. 3). The clock frequency corresponds to a wide range from 24 M to 160 MHz. The interface of V-by-One® bet88 kèo nhà cái is basically one lane, though some products have multiple lanes, depending on the device. Users can select the interface according to the bandwidth required.
THCV231 and THCV235 differ in terms of their package. THCV231 is sealed in a 32-pin QFN, while THCV235 is placed in a 64-pin QFN. THCV231 was designed to be compatible with any electronic device requiring a small package. THCV236 is the receiver corresponding to these transmitters with the 64-pin QFN package (right side in Fig. 3), and outputs the LVCMOS signal.
LVDS
Their maximum data transmission rate is 3.4Gbps.
LVDS
LVDS
Recently THine released transmitter IC THCV241-Q compatible with MIPI® CSI-2 input signals. It has four input lanes of MIPI® CSI-2 and two output lanes for V-by-One® bet88 kèo nhà cái (Fig. 7). THCV241-Q was developed for environments where more automotive and surveillance cameras are gradually implementing MIPI® CSI-2 interfaces. THCV241-Q realizes longer cable length and fewer lanes.
The number of pixels actually becomes larger and the frame speed becomes much faster in many applications such as automotive cameras, surveillance cameras, and machine vision. Therefore, V-by-One® bet88 kèo nhà cái is not only for LCD-TVs, but will play a major role in a wide market.
*“MIPI®” là nhãn hiệu đã đăng ký của MIPI Alliance, Inc.
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