IP Library Granted Patent US 8,643,401
Granted Patent B2
US 8,643,401 · App. 12/432,162 · Granted Feb 4, 2014

Integrated circuit communication system with differential signal and method of manufacture thereof

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Quick Facts
Patent No.
US 8,643,401
App. No.
12/432,162
Granted
Feb 4, 2014
Kind
B2
Abstract

A method of manufacture of an integrated circuit communication system including providing a semiconductor wafer; and fabricating a cross-over current mirror driver on the semiconductor wafer for generating a crossing point at a reference voltage.

Claims (42)

1. A method of manufacture of an integrated circuit communication system comprising:

providing a semiconductor wafer; and

fabricating a cross-over current mirror driver, having a single ended input circuit coupled to a first current mirror and a second current mirror, on the semiconductor wafer, the first current mirror sourcing a first reference current and the second current mirror sourcing a second reference current for regulating a transition region of a positive output waveform and a negative output waveform.

2. The method as claimed in claim 1 further comprising fabricating a positive output node and a negative output node in the cross-over current mirror driver.

3. The method as claimed in claim 1 wherein providing the semiconductor wafer includes providing a wafer from outside of a nominal region of a process control chart.

4. The method as claimed in claim 1 wherein fabricating the cross-over current mirror driver including fabricating a first transistor, a second transistor, a third transistor, and a fourth transistor includes coupling a fifth transistor, a sixth transistor, a seventh transistor, and an eighth transistor to a standard driver circuit in a cross-coupled configuration.

5. The method as claimed in claim 1 further comprising fabricating an electronic device including:

providing a first integrated circuit having the cross-over current mirror driver;

coupling a second integrated circuit to the first integrated circuit; and

providing a conductive link between the first integrated circuit and the second integrated circuit for signaling by the cross-over current mirror driver.

6. A method of manufacture of an integrated circuit communication system comprising:

providing a semiconductor wafer having integrated circuits; and

fabricating a cross-over current mirror driver, having a single ended input circuit coupled to a first current mirror and a second current mirror, in the integrated circuits on the semiconductor wafer for sending a clock, data, or a combination thereof, the first current mirror sourcing a first reference current and the second current mirror sourcing a second reference current for regulating a transition region of a positive output waveform and a negative output waveform.

7. The method as claimed in claim 6 further comprising.;

fabricating a positive output node and a negative output node in the cross-over current mirror driver for sourcing the positive output waveform and the negative output waveform; and

coupling an inverter to the cross-over current mirror driver.

8. The method as claimed in claim 6 wherein providing the semiconductor wafer includes providing a wafer from outside of a nominal region of a process control chart including providing a fast/fast wafer, a fast/slow wafer, a slow/slow wafer, or a slow/fast wafer.

9. The method as claimed in claim 6 wherein fabricating the cross-over current mirror driver including fabricating a first transistor, a second transistor, a third transistor, and a fourth transistor includes coupling a fifth transistor, a sixth transistor, a seventh transistor, and an eighth transistor to a standard driver circuit in a cross-coupled configuration including mirroring a current from the sixth transistor to a fourth transistor and from the eighth transistor to a second transistor.

10. The method as claimed in claim 6 further comprising fabricating an electronic device including:

providing a first integrated circuit having the cross-over current mirror driver including providing a microprocessor;

coupling a second integrated circuit to the first integrated circuit in which coupling the second integrated circuit includes coupling a display controller, a camera chip, an audio controller, or a combination thereof; and

providing a conductive link between the first integrated circuit and the second integrated circuit for signaling by the cross-over current mirror driver in which providing the conductive link includes providing a flex circuit, a cable, printed circuit board traces, or a combination thereof.

11. An integrated circuit communication system comprising:

a semiconductor wafer; and

a cross-over current mirror driver, with a single ended input circuit, fabricated on the semiconductor wafer, the cross-over current mirror driver including:

a first current mirror coupled to the single ended input circuit, and

a second current mirror coupled to the single ended input circuit, the first current mirror sourcing a first reference current and the second current mirror sourcing a second reference current for regulating a transition region of the positive output waveform and the negative output waveform.

12. The system as claimed in claim 11 further comprising a positive output node and a negative output node in the cross-over current mirror driver.

13. The system as claimed in claim 11 wherein the semiconductor wafer includes a wafer from outside of a nominal region of a process control chart.

14. The system as claimed in claim 11 wherein the cross-over current mirror driver with a first transistor, a second transistor, a third transistor, and a fourth transistor includes a fifth transistor, a sixth transistor, a seventh transistor, and an eighth transistor coupled to a standard driver circuit in a cross-coupled configuration.

15. The system as claimed in claim 11 further comprising an electronic device including:

a first integrated circuit having the cross-over current mirror driver;

a second integrated circuit coupled to the first integrated circuit; and

a conductive link between the first integrated circuit and the second integrated circuit coupled to the cross-over current mirror driver.

16. The system as claimed in claim 11 further comprising integrated circuits, having the cross-over current mirror driver, on the semiconductor wafer for sending a clock, data, or a combination thereof.

17. The system as claimed in claim 16 further comprising a positive output node and a negative output node, in the cross-over current mirror driver, for sourcing the positive output waveform and the negative output waveform.

18. The system as claimed in claim 16 wherein the semiconductor wafer includes a wafer from outside of a nominal region of a process control chart including a fast/fast wafer, a fast/slow wafer, a slow/slow wafer, or a slow/fast wafer.

19. The system as claimed in claim 16 wherein the cross-over current mirror driver with a first transistor, a second transistor, a third transistor, and a fourth transistor includes a fifth transistor, a sixth transistor, a seventh transistor, and an eighth transistor coupled to a standard driver circuit in a cross-coupled configuration including a current mirrored from the sixth transistor to a fourth transistor and from the eighth transistor to a second transistor.

20. The system as claimed in claim 16 further comprising an electronic device including:

a first integrated circuit having the cross-over current mirror driver in which the first integrated circuit is a microprocessor;

a second integrated circuit coupled to the first integrated circuit in which the second integrated circuit is a display controller, a camera chip, an audio controller, or a combination thereof; and

a conductive link between the first integrated circuit and the second integrated circuit coupled to the cross-over current mirror driver in which the conductive link is a flex circuit, a cable, printed circuit board traces, or a combination thereof.

Assignments (4)
RELEASE OF SECURITY INTEREST Recorded Nov 19, 2020
From: WILMINGTON TRUST, NATIONAL ASSOCIATION
To: GLOBALFOUNDRIES SINGAPORE PTE. LTD.
Reel/Frame 054481/0673 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 19, 2020
From: GLOBALFOUNDRIES SINGAPORE PTE. LTD.
To: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.
Reel/Frame 054600/0031 →
RELEASE OF SECURITY INTEREST Recorded Nov 18, 2020
From: WILMINGTON TRUST, NATIONAL ASSOCIATION
To: GLOBALFOUNDRIES INC.
Reel/Frame 054475/0718 →
SECURITY AGREEMENT Recorded Nov 27, 2018
From: GLOBALFOUNDRIES SINGAPORE PTE. LTD.
To: WILMINGTON TRUST, NATIONAL ASSOCIATION
Reel/Frame 047660/0203 →