SQE and Jabber Function (10BASE-T only) ................................................................................................................................... 13
MII Management Interface................................................................................................................................................................. 13
MII Data Interface ............................................................................................................................................................................ 13
RMII (Reduced MII) Data Interface.................................................................................................................................................... 14
RMII Signal Definition ...................................................................................................................................................................... 14
Transmit Data [1:0] (TXD[1:0])......................................................................................................................................................... 15
RMII AC Characteristics .................................................................................................................................................................. 16
SMII Signal Definition........................................................................................................................................................................ 17
DC Specification .............................................................................................................................................................................. 19
HP Auto Crossover (Auto MDI/MDI-X) ............................................................................................................................................. 21
Auto MDI/MDI-X Cross-Over Transformer Connection.................................................................................................................... 22
Power Management........................................................................................................................................................................... 22
Media Converter Operation............................................................................................................................................................... 22
Circuit Design Reference for Power Supply.................................................................................................................................... 25
Register 7h – Auto-Negotiation Next Page ...................................................................................................................................... 29
Register 8h – Link Partner Next Page Ability................................................................................................................................... 29
Reference Circuit for Strapping Option Configuration................................................................................................................... 43
Selection of Isolation Transformer .................................................................................................................................................. 44
Selection of Reference Crystal......................................................................................................................................................... 44
Package Information ......................................................................................................................................................................... 45
As discussed in Part 1, the analog sensor signal chain faces high-precision challenges: multiple gain, signal conditioning, and complex analog filtering stages, all feeding the SAR-ADC; thus, analog e...
6-Hardware I2C reads DHT12 dataAfter trying it for a while, I found that the CH582 library function is simple and convenient to use, and it is easy to get started. However, some routines are lacking, ...
Recently, Huawei has been exposing the news every day. Is it so difficult to send text messages using satellites?
Mobile phone positioning also uses satellite interactive information, and the messages...
[size=5][color=red]I am currently designing an LC filter with a center frequency of 1.1G. However, when debugging the processed filter, the bandwidth of the filter is narrower than the simulation in A...
A novice SPI communicates with a radio frequency chip and I don't know how to solve it. I hope the experts in the forum can help me.1. My initialization program//ClockCLK_ICKR = (1while((CLK_ICKR & 0X...
1. Overview
Will passive devices
produce nonlinear intermodulation distortion? The answer is yes! Although there is no systematic theoretical analysis, it has been found in engineerin...[Details]
At present, the traffic congestion in cities is quite serious. According to relevant news reports: In China, the traffic congestion has expanded from megacities such as Beijing, Shanghai, and Guang...[Details]
1 Introduction
Intelligent control instruments are one of the most commonly used controllers in industrial control. They are mainly aimed at a specific parameter (such as pressure, tempera...[Details]
With the rapid development of intelligent control technology, computers and information technology, the trend of information appliances IA (Information Application), computers and communications integ...[Details]
With the widespread application of new services and technologies in the communications industry, the scale and capacity of operators' network construction are getting larger and larger, and the ris...[Details]
1. Overview
At present, an information revolution is in the ascendant around the world, led by microelectronics, computers and communication technologies, and centered on information technolog...[Details]
1 Introduction
With the improvement of people's quality of life, lamps are no longer just basic indoor lighting tools, but also a kind of practical art for architectural decoration. When ther...[Details]
Overview
By transmitting ultrasonic energy into the human body and receiving and processing the returning reflected signals, phased array ultrasound systems can generate images of organs and s...[Details]
summary
This article will briefly analyze the success and shortcomings of high-frequency DC-DC switching power supplies in the process of miniaturization (the second basic goal), and propose m...[Details]
The principles to be followed are as follows:
(1) In terms of component layout, related components should be placed as close as possible. For example, clock generators, crystal oscillat...[Details]
0 Introduction
In the design and construction of communication systems,
communication power supply
is called the heart of the communication system. The power supply system will dire...[Details]
In the TV monitoring system, in order to complete the collection of information from various information points (video, audio, alarm signal) and the control of various front-end devices (PTZ, lens,...[Details]
Abstract: Based on the analysis of the characteristics of the IRIG-B (DC) code type, a design method for IRIG-B (DC) time code decoding is proposed. This method consists of a small number of periph...[Details]
Traditional synthesis techniques are increasingly unable to meet the needs of today's very large and complex FPGA designs implemented in 90nm and below process nodes. The problem is that traditio...[Details]
1 Introduction
The stepper motor is an actuator of an open-loop servo motion system, which is controlled in a pulse mode and outputs angular displacement. Compared with AC servo motors and DC servo ...[Details]
Analogue and Mixed Signal
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