Systems And Methods For Selecting Decoupling Capacitance Using A Power Jumper Circuit
An integrated circuit package includes a support device, first and second integrated circuits mounted on the support device, and a power jumper circuit selectable to couple a decoupling capacitor to one of a first power supply input of the first integrated circuit or a second power supply input of the second integrated circuit.
1 . An integrated circuit package comprising:
a support device;
first and second integrated circuits mounted on the support device; and
a first power jumper circuit selectable to couple a first decoupling capacitor to one of a first power supply input of the first integrated circuit or a second power supply input of the second integrated circuit.
2 . The integrated circuit package of claim 1 , wherein the first power jumper circuit comprises:
a resistor coupled between the first power supply input of the first integrated circuit and the first decoupling capacitor.
3 . The integrated circuit package of claim 1 , wherein the first power jumper circuit comprises:
a resistor coupled between the second power supply input of the second integrated circuit and the first decoupling capacitor.
4 . The integrated circuit package of claim 1 , wherein the support device comprises:
a first external terminal coupled to the first power supply input of the first integrated circuit; and
a second external terminal coupled to the second power supply input of the second integrated circuit, wherein the first power jumper circuit couples the first decoupling capacitor to one of the first external terminal or the second external terminal.
5 . The integrated circuit package of claim 1 , wherein the first decoupling capacitor is an on-package decoupling capacitor.
6 . The integrated circuit package of claim 1 further comprising:
a third integrated circuit mounted on the support device; and
a second power jumper circuit selectable to couple a second decoupling capacitor to one of the first power supply input of the first integrated circuit or a third power supply input of the third integrated circuit.
7 . The integrated circuit package of claim 6 , wherein the second power jumper circuit comprises:
a resistor coupled between the first power supply input of the first integrated circuit and the second decoupling capacitor.
8 . The integrated circuit package of claim 6 , wherein the second power jumper circuit comprises:
a resistor coupled between the third power supply input of the third integrated circuit and the second decoupling capacitor.
9 . The integrated circuit package of claim 1 further comprising:
a resistor coupled between the first power supply input of the first integrated circuit and the first power jumper circuit.
10 . A support device comprising:
a first power supply network configured to be coupled to a first integrated circuit;
a second power supply network configured to be coupled to a second integrated circuit, wherein the support device is configured to support the first integrated circuit and the second integrated circuit;
a first external terminal coupled to the first power supply network; and
a second external terminal coupled to the second power supply network, wherein a first power jumper circuit couples a first decoupling capacitor to one of the first power supply network through the first external terminal or the second power supply network through the second external terminal.
11 . The support device of claim 10 , wherein the first power jumper circuit comprises a resistor that couples the first decoupling capacitor to the first power supply network.
12 . The support device of claim 10 , wherein the first power jumper circuit comprises a resistor that couples the first decoupling capacitor to the second power supply network.
13 . The support device of claim 10 further comprising:
a third power supply network configured to be coupled to a third integrated circuit;
a third external terminal coupled to the first power supply network; and
a fourth external terminal coupled to the third power supply network, wherein a second power jumper circuit couples a second decoupling capacitor to one of the first power supply network through the third external terminal or the third power supply network through the fourth external terminal.
14 . The support device of claim 13 , wherein the second power jumper circuit comprises a resistor that couples the second decoupling capacitor to the first power supply network or to the third power supply network.
15 . A method for selecting decoupling capacitance in an integrated circuit package, the method comprising:
mounting first and second integrated circuits on a support device in the integrated circuit package; and
coupling a first decoupling capacitor to one of a first power supply input of the first integrated circuit or a second power supply input of the second integrated circuit through a first power jumper circuit.
16 . The method of claim 15 , wherein coupling the first decoupling capacitor to one of the first power supply input of the first integrated circuit or the second power supply input of the second integrated circuit through the first power jumper circuit comprises coupling the first decoupling capacitor to one of the first power supply input of the first integrated circuit through a first external terminal of the support device or the second power supply input of the second integrated circuit through a second external terminal of the support device.
17 . The method of claim 15 further comprising:
mounting a third integrated circuit on the support device; and
coupling a second decoupling capacitor to one of the first power supply input of the first integrated circuit or a third power supply input of the third integrated circuit through a second power jumper circuit.
18 . The method of claim 17 further comprising:
mounting a fourth integrated circuit on the support device; and
coupling a third decoupling capacitor to one of the first power supply input of the first integrated circuit or a fourth power supply input of the fourth integrated circuit through a third power jumper circuit.
19 . The method of claim 16 , wherein coupling the first decoupling capacitor to one of the first power supply input of the first integrated circuit or the second power supply input of the second integrated circuit through the first power jumper circuit comprises coupling the first decoupling capacitor to one of the first power supply input of the first integrated circuit or the second power supply input of the second integrated circuit through a resistor.
20 . The method of claim 15 , wherein the support device is a package substrate.