Resistor values are typically 120 to 240 ohms for 3.3V opera on and 82 to 120 ohms for 2.5V
opera on.
Figure 7 - Pull Up Pull Down Termina on
Resistor values are typically for 3.3V opera on
For 2.5V opera on, the resistor to ground is 62 ohms and the resistor to supply is 240 ohms
There are numerous applica on notes on termina ng and interfacing PECL logic and the two most common methods are a single resistor to ground, Figure 6,
and a pull-up/pull-down scheme as shown in Figure 7. An AC coupling capacitor is op onal, depending on the applica on and the input logic requirements of
the next stage.
One of the most important considera ons is termina ng the Output and Complementary Outputs equally. An unused output should not be le un-
terminated, and if one of the two outputs is le open it will result in excessive ji er on both. PC board layout must take this and 50 ohm impedance matching
into account. Load matching and power supply noise are the main contributors to ji er related problems.
LVDS Applica on Diagrams
+3.3V
OE or NC
10nF
1nF
1
6
+3.3V
OE or NC
10nF
1nF
1
6
10nF
OE or NC
2
5
100
3
4
10nF
OE or NC
2
5
Receiver
100
Receiver
3
4
Figure 8 - LVDS to LVDS, internal 100Ω
Some LVDS structures have an internal 100 ohm resistor on the
input and do not need addi onal components.
Figure 9 - LVDS to LVDS, External 100Ω and AC block ing caps
One of the most important considera ons is termina ng the Output and Complementary Outputs equally. An unused output should not be le un-
terminated, and if one of the two outputs is le open it will result in excessive ji er on both. PC board layout must take this and 50 ohm impedance matching
into account. Load matching and power supply noise are the main contributors to ji er related problems.
[i=s]This post was last edited by RCSN on 2021-9-27 09:58[/i]The thing is, I just happened to need to use their CAN box for secondary development of the host computer recently. I thought that I could ...
Recruitment position: MCU engineer (urgent) 1 personEducation: Bachelor degree or aboveSalary: 20K/month, no upper limitBenefits: two days off, five insurances and one housing fund, food and accommoda...
Many friends spend a lot of time in setting up the development environment. Now we will give a quick guide to the common problems of setting up 8051 with Keilto avoid wasting too much time. For other ...
A display solution for APF system information——Based on Topmicro intelligent display module
1. IntroductionThe advancement of science and technology has affected the development of all industries, amo...
introduction I have been involved in embedded software development for nearly five years, and I have almost always used ARM Cortex M core series microcontrollers. During these five years, thanks to t...[Details]
Choosing among the range of available test and measurement hardware and software can understandably be daunting for first-time and experienced users alike.
Technological advances have accelerated ...[Details]
On April 20, OPPO announced on its official website that Shen Yiren had officially resigned as OPPO's global marketing president. As for the reason for doing so, the official said it was due to Shen ...[Details]
Knowledge about CPU timing Oscillation period: The period of the oscillation source that provides the timing signal for the microcontroller (crystal oscillator period or external oscillation period) ...[Details]
Due to the improved Harvard architecture, the 51 microcontroller has independent program memory ROM and data memory RAM. The two address spaces are independent and independently addressed. The follow...[Details]
When a CAN L short-circuit to ground fault occurs, depending on the fault-tolerance characteristics of the CAN bus, the entire CAN network may be unable to communicate or a related fault code may b...[Details]
The HT1621 LCD display controller is a display component of a multifunctional fully automatic intelligent switch, which can monitor the operation of the power supply line in real time, accurately a...[Details]
1 Introduction
TI's MSP430 microcontroller has won the favor of designers with its unique low power consumption and modular design. The new MSP430F247 has a very high cost performance. This 16-...[Details]
1 Overview
With the rapid development of semiconductor technology and the application of mobile communication, network technology and multimedia technology in embedded system design, the devel...[Details]
0 Introduction
The full name of the Linux operating system is GNU/Linux, which is an operating system composed of two parts: the GNU project and the Linux kernel. The source code of all compo...[Details]
The main features and advantages of Keithley 2635A digital source meter: Keithley's 2635A digital sourcemeter combines the following functions into a compact unit: precision voltage source, high-prec...[Details]
As early as April 2018, the "Management Specifications for Intelligent Connected Vehicle Road Testing (Trial)" (hereinafter referred to as the "Management Specifications") jointly issued by the Minis...[Details]
Last night, Tianfeng International analyst Ming-Chi Kuo released the latest Apple research report, providing forecasts for the iPhone product line and key specifications for 2021-2023. The re...[Details]
Our reporters Tang Jinyan and Zhang Jingchao reported from Guangzhou
"We use the money we save for business innovation, and each of us can maintain our brand and provide differentiated (servic...[Details]
1. UPS selection for control system
The automation control system of an enterprise production line is generally composed of a secondary industrial computer and a field workstation (PLC, DSC)....[Details]
Talking
京公网安备 11010802033920号
EEWORLD
