Chapter 668 SoC
In fact, what Gao Zhendong said is a bit nonsense. Although he has completed most of the content, it is still a big challenge for these comrades to put these contents together and complete those parts that need to be improved.
But these young comrades also know that in fact, except for Gao Zhendong, their group is already the top talent in domestic IC design work. Except for some teachers and some students from the 12th Department of Machinery, they are basically on the same level as them. , there is no other power.
If we don’t go up, who will?
So why are you hesitating? So what are you afraid of?
You can't expect Professor Gao to finish everything, right?
Don't be timid, just do it!
Xiaoye took the lead and patted his chest: "Professor Gao, don't worry, our 619 Research Laboratory will definitely complete this work under your guidance!"
There were too few people to meet the specifications of the institute, so this special IC research department of the National Defense Work Committee was called the 619 Research Laboratory. Although there are not many people and the level is not high, the standards are not low and they are directly responsible to the committee.
Gao Zhendong nodded and comforted them with a smile: "Don't worry. Generally speaking, this matter is difficult, but it is not difficult for you. As for the remaining matter, it is much simpler than this."
The students are curious, why is a simple thing put behind?
"While completing the digital signal processor, or after it is completed, you will remove the dedicated parts such as the hardware multiplier of the processor, leaving only the adder, controller, and necessary on-chip resources, interfaces, registers and part of memory. , leave a specific number, and then I will give you a specification, which is also made into a single-chip device.”
"Professor Gao, is this similar to the C6108 you made?"
Gao Zhendong smiled: "Well, you are very keen. You are right. It is indeed very similar to my C6108, but have you noticed its characteristics?"
Xiaoye stayed with him the longest. Compared with other students, his systematic and systematic thinking was at the forefront, so his reaction speed was also the fastest.
"Is it the monolithic you mentioned? According to your design, this device theoretically only needs a power supply, a simple startup reset circuit, and an oscillation source to work. It is very simple. And the function and performance of this device Basically, they have been suppressed to a minimum, but the interfaces and resources are relatively complete.”
The young man is quite good. Gao Zhendong is quite happy: "Well, you discovered the characteristics of this device. What are the uses of these characteristics?"
"The characteristic of this device is that it is simple, very simple, whether it is its internal structure or application. In this way, the cost should be very low...simple and cheap... Mr. Gao, you want us to make a device that can be used in large quantities." 'Computers' used in all walks of life? ”
"That's right! What I want you to do is to integrate all the functions of a simple computer on one chip. We can call it a 'single-chip microcomputer'. Compared with C6108+C6110 and complete peripheral circuits, the application of this single-chip microcomputer is The system cost will be very low and can be used on a large number of simple control circuits. And with the development of chips, its cost advantage will become larger and larger. "The young man is good and can think things through at once.
Single-chip microcomputer, SoC (System on Chip), integrates the entire system into a chip. It is a concept that has been talked about all day long by self-media when conducting mobile phone reviews in the 21st century. In fact, it appeared very early, and it is not an exclusive term for mobile phone chips.
Although the performance of the 8-bit microcontroller is not very good, for most applications, its capabilities are overflowing, and the foundation of Gao Zhendong's microcontroller is different from the 51 microcontroller he used in his previous life.
A machine cycle of the 51 microcontroller is 12 clock cycles (12T), and the basis of Gao Zhendong's microcontroller is modified with the C6108, which has a machine cycle of 4 clock cycles (4T). This means one thing.
Compared with the C6108, this microcontroller has been castrated by unnecessary registers and other parts, but the computing speed has not been castrated.
In other words, overly complex operations may be limited, but for simple operations with few operands, the microcontroller and C6108 are actually roughly the same.
Even if it runs at a low frequency of 2.5MHz, the theoretical computing speed is roughly comparable to the 7.5MHz 51 microcontroller.
This speed seemed very amazing at this time.
To illustrate how amazing the situation is decades later, the 11.0592MHz 12T Class 51 chip is still widely used into the 21st century, and in quite a few applications, the speed of this type of chip is Still in a state of performance overflow.
Thinking of this, Gao Zhendong drew a pie for the students: "You guys work hard. Once this thing is ready, its life cycle will be much longer than that of C6108. After a few decades, everyone will probably still remember you."
In fact, strictly speaking, Gao Zhendong's words are described as describing the future rather than painting a cake. Painting cakes cannot be fulfilled, but Gao Zhendong's words are a real future.
As long as they are cheap enough and functional, this most basic component is actually more difficult to eliminate than cutting-edge devices. Cutting-edge devices need to be updated and easily replaced.
In the 21st century, the biggest improvement of Class 51 chips is not only the increase in main frequency due to improvements in manufacturing processes, but also the addition of more on-chip resources such as AD, DA, I2C, SPI, ROM, RAM, and UART. In addition, its core architecture and instruction set are basically unchanged.
To talk about the real essential improvement, in fact, someone changed 12T to 1T, and that’s it.
As he expected, the young comrades in Room 619 became excited when they heard this.
Is this considered a name that will go down in history? Even if it is just the history of the industry, it is still young history.
For Chinese people, the appeal of these words is so great that barbarians outside the region probably don’t understand it very well.
A group of young people immediately came forward, shouting that they must do this work, even if they don’t eat or drink!
Seeing their commotion, Gao Zhendong smiled.
He took out two documents and handed them to the comrades in Room 619. They contained specifications and plans for DSP and SoC. Xiaoye was naturally responsible for this matter, and his establishment in the committee was now under Room 619.
Xiaoye took the materials and was very clear about what he was going to do without waiting for Gao Zhendong's instructions.
"I'll go back right away and organize everyone to write project applications! Get it done as quickly as possible!"
For Mr. Gao's project, the project declaration is the best to write. Basically, you only need to fill in the necessary form items. As for the actual content of the project, Mr. Gao has already prepared it.
As for the necessity and feasibility of the project declaration, which are the most troublesome, there is no need to worry about anything. Xiaoye is not sure about other ministries and commissions, but at least in the National Defense Working Committee, President Gao can not write a word in these two aspects of the project.
The reason is very good, keep it secret.
If you have to go through the motions, you can write it like this.
Necessity: High level.
Feasibility: High total energy.
——
After arranging these two things, Gao Zhendong thought for a while, and it seemed that no one had come to the laser gyroscope of the Yuan Research Institute for a long time.
It seems that the comrades from the original research institute have been making good progress, but people can't stand talking about it, here they come!
Mo Gong took a few people to the third factory.
Gao Zhendong was very happy about their sudden visit after not coming for a long time.
The long absence means that things are going smoothly. After Gao Zhendong finalized the plan with them last time, there were no big problems with the whole plan, and they solved all the minor problems.
Everyone is busy these days. If there is no need, we probably don’t have time to go around and visit.
And their sudden visit must mean that things have changed significantly. Even if they have to come when they encounter a problem, they have reached a critical point.
Inviting them to sit down in the office, Gao Zhendong made tea and said with a smile: "Gong Mo, I haven't seen you for a while. How is the progress of the laser gyroscope now?"
Based on the familiarity and work content of the comrades from the original research institute, they were invited into his office by Gao Zhendong as soon as they arrived.
There was no gloomy look on Mo Gong's face. It seemed that the situation was good: "Very good. The plan you came up with last time was very good. The Northeast Institute of Optics you recommended is also very strong. They The optical resonant cavity made of fused quartz you made also meets our requirements very well. Now we have built a prototype and done a set of tests. The results are generally good.”
Gao Zhendong put down the tea cups for several people and picked up the test results he brought.
Gao Zhendong took a look and found that it was really good. Although it did not reach the expected accuracy, the overall trend could be seen, that is, they had really mastered the principles and applications of laser gyroscopes.
"Well, although the accuracy is a bit poor, there is no problem with the overall direction. Okay, great."
Mr. Mo was not proud either. If everything was fine, they wouldn't be here today.
"Mr. Gao, it's not completely okay..."
"Well, I know, I can tell. Generally speaking, the length of the optical cavity cannot be controlled, and the jitter difference frequency compensation in the locking area is also a bit outrageous."
Mo always brought all the test records in detail and brought them together. Gao Zhendong could naturally see some clues.
Mr. Mo was greatly impressed by Gao Zhendong's words.
Being able to see that there are problems in the data is a skill, but Gao Zhendong's ability to immediately see where the root of the problem is based on the data is really impressive.
"Mr. Gao has a keen eye. These two problems are the main reasons why the accuracy of the prototype does not meet expectations. I am ashamed to say that the problem has been found, but we still have not been able to solve it."
Gao Zhendong put down the test record and said seriously: "Tell me the specific situation."
"Let's talk about the optical cavity length control first. It is difficult to adjust the optical cavity length by purely mechanically controlling the mirror position, so I still use the solution you gave, using piezoelectric elements to adjust the mirror position. ”
If we want to use machinery to achieve this precise adjustment within this volume and weight limit, it is still beyond our capabilities at this stage.
(End of chapter)