S-011 V-by-One电路设计


关于VbyOne接口,V-by-One HS是由日本赛恩电子公司(THine Electornics)开发的适用于平板显示器的信号传输接口标准。目前,广泛应用在多功能打印机等办公设备、车载娱乐设备、机器人、安防系统等领域。

1 优势

  • 高速(支持最高4Gbps速率,有效数据速率达3.2Gbps)
  • 低功耗(与固定的速率传输相比,传输速率可变)
  • 低EMI(支持扰码和数据时钟恢复)
  • 支持时钟对齐(时钟信号恢复技术,解决了在LVDS方案下日趋显著化的配线时滞问题)。
  • 传输距离远,可达15米。

2 系统框图

在这里插入图片描述
说明:

  • TX和RX数据传输线两端需匹配去耦电容
  • 在TX端控制信号LOCKN,HTPDN需上拉电阻。
  • TX和RX之间传输线数量由色深和pixel clock决定。
  • TX端控制信号有H-sync,V-sync,DE和CTL信号。
  • 传输端支持预加重(pre-emphasis),接收端支持EQ均衡(equalizer)

2.1 Data Line数量选择

在这里插入图片描述

像素时钟计算Pixel Clock=H-totalV-totalrefresh rate
案 例:4K*2K 60Hz,Pixel Clock=4400 x 2250 x 60=594Mhz颜色深度计算:Color depth=R(6、8、10、12bit)+G(6、8、10、12bit)+B(6、8、10、
12bit)

2.2 数据包字节模式选择

根据Color depth选取数据包字节模式byte mode,支持byte mode模式:3byte,4byte,5byte
举例:10bit色深,则一个pixel需要3(R,G,B)*10bit=30bit的数据,4byte mode可以支持,另外5byte mode也可以支持.

### STM32F103C8T6 ADC Sampling Voltage Circuit Design Example Schematic Diagram Tutorial When designing a circuit to sample voltages using the ADC on an STM32F103C8T6 microcontroller, several factors must be considered including input signal characteristics, noise reduction techniques, and proper configuration of the analog front-end components[^1]. The typical setup involves connecting sensors or other analog signals directly to one of the available ADC channels. For optimal performance: - **Signal Conditioning**: Ensure that any external sensor outputs are within the acceptable range (usually between VSSA and VREF+) by incorporating appropriate resistive dividers if necessary. - **Decoupling Capacitors**: Place decoupling capacitors close to both power supply pins (VDDA/VSSA) as recommended in datasheets to minimize noise interference. Below is a simplified schematic representation showing how these elements might connect together with respect to channel PA0/ADC_IN0 which serves as an illustrative example rather than specific implementation advice[^2]: ```plaintext +-------------------+ | | | Sensor Output |-----> Resistor Divider ----> C1 --> PA0/ADC_IN0 | | (if needed) +--------+----------+ | v GND/RFGND ``` In this illustration: - A resistor divider may optionally reduce higher voltage levels from certain types of transducers before reaching the pin. - Capacitor `C1` acts as a low-pass filter reducing high-frequency noises present at the line while ensuring stable readings during conversion processes. To configure software settings properly for accurate conversions without aliasing effects due to undersampling issues, refer back again towards defining base simulation parameters mentioned earlier regarding timing considerations when setting up your project files accordingly. --related questions-- 1. What are common methods used to improve accuracy in ADC measurements? 2. How does adding a capacitor near the ADC input affect measurement quality? 3. Can you explain why it's important to match impedance between source and load circuits connected through ADC interfaces? 4. In what scenarios would someone need to use differential instead of single-ended inputs on their ADCs?
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