Claims
- 1. A system comprising:
a first printed circuit board (PCB); and a second PCB, coupled to the first PCB via differential traces, the differential traces to carry the high-speed serial data received from a first logic element on the first PCB and crossover on the same layer of the second PCB to a second logic element on the second PCB while maintaining a constant impedance.
- 2. The PCB of claim 1 wherein the differential traces comprise:
a passing trace; and a non-passing trace.
- 3. The PCB of claim 2 wherein the passing trace crosses the non-passing trace at a right angle.
- 4. The PCB of claim 3 wherein the non-passing trace has a narrow section that compensates for the dielectric constant of passive components.
- 5. The PCB of claim 2 further comprising a component coupled between the passing trace and the non-passing trace.
- 6. The PCB of claim 5 wherein the component is a resistor.
- 7. The PCB of claim 5 wherein the component is a capacitor.
- 8. A system comprising:
a first functional unit block (FUB) that transmits high-speed serial data; differential traces, coupled to the first FUB, that carry the high-speed serial data from the first FUB and crossover on the same layer of a printed circuit board (PCB) while maintaining a constant impedance; and a second FUB, coupled to the differential traces, to receive the high-speed serial data from the differential traces.
- 9. The PCB of claim 8 wherein the differential traces comprise:
a passing trace; and a non-passing trace.
- 10. The PCB of claim 9 wherein the passing trace crosses the non-passing trace at a right angle.
- 11. The PCB of claim 9 further comprising a component coupled between the passing trace and the non-passing trace.
- 12. The PCB of claim 11 wherein the component is a resistor.
- 13. The PCB of claim 11 wherein the component is a capacitor.
- 14. The PCB of claim 9 wherein the non-passing trace has a narrow section that compensates for the dielectric constant of passive components.
- 15. A method comprising transmitting high-speed serial data from a first logic element via differential traces that carry and crossover on the same layer of a printed circuit board (PCB) to a second logic element while maintaining a constant impedance.
- 16. The method of claim 15 wherein the differential traces comprise:
a passing trace; and a non-passing trace.
- 17. The method of claim 16 wherein the passing trace crosses the non-passing trace at a right angle.
- 18. The method of claim 16 further comprising a component coupled between the passing trace and the non-passing trace.
- 19. The method of claim 18 wherein the non-passing trace has a narrow section that compensates for the dielectric constant of passive components.
Parent Case Info
[0001] The present patent application is a Divisional of application Ser. No. 10/288,346, filed Nov. 4, 2002.
Divisions (1)
|
Number |
Date |
Country |
Parent |
10288346 |
Nov 2002 |
US |
Child |
10408369 |
Apr 2003 |
US |