Super Copy of Great Power Technology

Chapter 79 The second tape-out
"By the way, Ruida, I haven't asked you how your review of those courses went? The final exam will start soon. Don't fail the class then and come back to make up the exam. That would be too embarrassing."

Peking University is a place where talents gather, with many top scorers and high-scoring academics everywhere.It is normal for ordinary college students to fail courses and make up exams, but for the proud students of Peking University, it is a very embarrassing thing.For Qiao Ruida, because he applied for the privilege of being exempted from attending classes, the requirements for the final exam were higher. His score must be at least excellent, that is, [-]% on the [-]-point scale to pass.

"As early as the first month of school, I memorized all the textbooks for four years of college. A few days ago, I borrowed their class notes from my classmates and memorized them all. With these preparations, I passed the final exam It's still very easy. It's hard to say 100 points, but 90 points will definitely be no problem." With a golden finger by his side, Qiao Ruida is full of confidence when it comes to learning.

Qiao Ruida sent Du Qingqing back to the dormitory, then turned around and returned to Dormitory Building No. 39.

When Du Qingqing walked into the dormitory carrying a dozen large and small bags, he was greeted by three pairs of curious eyes.

"Sister Qingqing, you answered the phone at noon and ran out in a hurry. What happened?"

"What else can I do? I must be out on a date. You haven't seen how happy our Qingqing is smiling."

"I think so, Qingqing, these things you have are all bought by Qiao Ruida for you. Let me see what they have, Qiushui Yiren, Gloria, Dior, wow, they are all clothes from first-tier brands at home and abroad, your boyfriend It’s so good to you, I’m even a little envious.”

As early as the beginning of school, Du Qingqing's roommate had met Qiao Ruida, so their relationship was not a secret in Du Qingqing's dormitory.

Du Qingqing got along well with the three roommates, and was not afraid of their teasing. He immediately retorted: "Since you are envious, you can just go find someone. We are Crouching Tigers, Hidden Dragons at Peking University. What kind of boyfriend can't be found?" .”

"It's not as simple as you said. It's easy to find a boyfriend, and it's not difficult to find a rich boyfriend, but it's too difficult to find a talented, handsome, and rich boyfriend."

"Yes, we have so many boys at Peking University, and there are a few who are as outstanding as Qiao Ruida. If it weren't for our deep love as sisters, I would have wanted to snatch them away."

Seeing that he was about to be besieged by the sisters, Du Qingqing quickly changed the subject, took out two boxes of beautifully packaged pastries, and said, "Do you have anything to eat from the pastries from Daoxiang Village, Jingba Piece?"

There is no girl who doesn’t love snacks, and sweet and crispy pastries are their favorite.It is said that eating sweets can increase happiness.

"Yeah, there are so many pastries, I want to eat them and roll around."

"Leave a few pieces for me. I wanted to lose weight and didn't even eat dinner. Now that I see such good pastries, who can resist it." "I just finished brushing my teeth. It's really confusing. Should I eat it?" Still eating."

Two boxes of pastries, weighing one kilogram, were divided up by four women in less than 10 minutes. It can be seen that women are no worse than men in terms of fighting ability when it comes to delicious food.

After a night of silence, the next day, Qiao Ruida drove to the Daxing campus again, found Zhou Wanda, and asked for another tape-out.

"Why, the last tapeout was not successful. What part went wrong?"

"It was indeed unsuccessful. Players assembled using those chips can be turned on, can enter the system, and can play music. However, they can only read a small part of the flash memory chip, and the storage capacity has been greatly reduced. It is not practical at all. Sex. I searched for bugs for two days, and finally found that one of the connecting lines was connected to the wrong place. This was really a mistake, and everything was lost, and 600 million was wasted."

"You're pretty good now. At least the system can run and most functions can be implemented. It can only be regarded as a minor problem. It's relatively simple to find and fix bugs. I'll tape it out once or twice and there will be no problem in testing." It can be used for mass production. If the system cannot run and cannot realize any functions, it is really bad. There is no way to start, and there is a high probability that it will be reset to zero and restarted." Zhou Wanda said in Integration I have been working in the circuit laboratory for many years, and I have seen various tape-out failures. Don’t let me know too much, just speak from experience.

"I hope this tape-out can be successful at the first time. I don't want to go back and forth again. The loss of money is second. The process of going from full of hope to disappointment is really torturous."

"Hahaha, you are still too young. You will get used to it after experiencing it a few times. For those of us in the chip design industry, tapeout failure is simply a common occurrence. If you don't experience it dozens of times, you will be embarrassed to say hello to your colleagues. Let's go, I'll take you to sign the contract. The chip production line on the negative floor is currently producing a batch of power amplifier chips. Your tape-out test business needs to wait in line, and it will not start in about two days."

"Isn't that chip production line on the negative floor a test line? How can it undertake chip mass production? Aren't you afraid that the cost will be too high?"

"This involves some industry secrets. The chips that are mass-produced on our test line can be roughly divided into two situations. One is chips that require confidentiality. Large-scale chips such as SMIC and Huahong A round foundry has a complex share structure and a large number of personnel. If the chips are produced there, there is a risk of leakage. On the contrary, a pilot production line like ours has fewer staff, simple and controllable ownership, and is more conducive to confidentiality. The other is the need A relatively small number of chips, such as the power amplification chips currently produced, are used on high-speed trains, and the demand is only [-]. If they are taken to large wafer foundries, they may not be willing to accept such a small order. In the above two cases, Party A is not very sensitive to production costs. Even if the test line is used for production, the yield rate is lower and the cost of a single chip is higher, they can still accept it."

"So that's the way it is, I've been taught."

With the experience of the last cooperation, signing the tape-out test contract this time was a breeze. It only took half an hour to complete all the procedures.After calling the Finance Department of Reda Technology and transferring the tape-out fees to the designated account, the contract officially came into effect and it only took two days for the tape-out production to begin on the production line.Seeing that it was still early, Qiao Ruida followed Zhou Wanda back to his office and asked him about some chip mass production matters.After this tape-out, the audio decoding chip designed by Qiao Ruida has a high probability of passing the test, and will be ready for the next step of mass production.Now is the time to inquire about the situation of wafer foundries.

"Teacher Zhou, can our domestic wafer foundries currently be able to mass produce 45nm chips?"

(End of this chapter)