Pin unspecific device planning for printed circuit board layout

• US 8,271,933 B1
• Filed: 12/30/2009
• Issued: 09/18/2012
• Est. Priority Date: 12/30/2009
• Status: Active Grant

• Current Assignee: Cadence Design Systems Incorporated (Cadence Group)
• Original Assignee: Cadence Design Systems Incorporated (Cadence Group)
• Inventors: Kohli, Vikas, Sankaran, Dhamarajan, Durrill, Steve R.
• Primary Examiner(s): Siek, Vuthe
• Application Number:
  US12/650,346
• Time in Patent Office: 993 Days
• Field of Search: 716/137, 716/139
• US Class Current: 716/139
• CPC Class Codes: G06F 2113/18 Chip packaging
• CPC Class Codes: G06F 2115/12 Printed circuit boards [PCB] or multi-chip modules [MCM]
• CPC Class Codes: G06F 30/327 Logic synthesis; Behaviour synthesis, e.g. mapping logic, HDL to netlist, high-level language to RTL or netlist
• CPC Class Codes: G06F 30/39 Circuit design at the physical level physical level design for reconfigurable circuits G06F30/347
• CPC Class Codes: G06F 30/392 Floor-planning or layout, e.g. partitioning or placement

Abstract

A printed circuit board (PCB) block diagram tool for block diagram level editing of a PCB design abstracted from a PCB physical layout tool is disclosed. The PCB block diagram tool includes a plurality of interface objects, a plurality of block objects and interconnect lines. The plurality of interface objects represents interfaces between components. Each of the plurality of interface objects include a plurality of signal, power and ground signal lines without defined physical assignment to pin or pad. The plurality of block objects represents a plurality of physical objects in the PCB physical layout tool. The plurality of blocks are configured to accept the plurality of interface objects. Interconnect lines connect the plurality of interface objects between the plurality of block objects.

Claims

1. A printed circuit board (PCB) block diagram tool for block diagram level editing of a PCB design abstracted from a PCB physical layout tool, the PCB block diagram tool comprising:

a plurality of interface objects representing interfaces between components, wherein each of the plurality of interface objects include a plurality of signal, power and ground signal lines without defined physical assignment to pin or pad;

a plurality of block objects representing a plurality of physical objects in the PCB physical layout tool, wherein the plurality of blocks are configured to accept the plurality of interface objects;

the plurality of interface objects can be assigned to a block object without requiring mapping to pins or pads; and

interconnect lines that connect the plurality of interface objects between the plurality of block objects.

2. The PCB block diagram tool for block diagram level editing of the PCB design abstracted from the PCB physical layout tool as recited in claim 1, wherein the PCB block diagram tool is used do capture a system definition.

3. The PCB block diagram tool for block diagram level editing of the PCB design abstracted from the PCB physical layout tool as recited in claim 1, further comprising a tool component that maps each of the plurality of block objects to the plurality of physical objects.

4. The PCB block diagram tool for block diagram level editing of the PCB design abstracted from the PCB physical layout tool as recited in claim 1, wherein the physical objects virtually describe connectors and/or packages in a domain of the PCB physical layout tool with dimensioning and pin configuration.

5. The PCB block diagram tool for block diagram level editing of the PCB design abstracted from the PCB physical layout tool as recited in claim 1, wherein the plurality of interface objects defines signal grouping and signal names.

6. The PCB block diagram tool for block diagram level editing of the PCB design abstracted from the PCB physical layout tool as recited in claim 1, further comprising an interface between the PCB block diagram tool and the PCB physical layout tool, wherein the PCB physical layout tool comprises a plurality of physical objects that correspond to the plurality of block objects.

7. The PCB block diagram tool for block diagram level editing of the PCB design abstracted from the PCB physical layout tool as recited in claim 1, further comprising an interface between the PCB block diagram tool and the PCB physical layout tool, wherein:

the PCB physical layout tool is passed names of the plurality of signal, power and ground lines, and

the names are preserved in the PCB physical layout tool regardless of whether the names are assigned to pins or pads.

8. A computer-implemented method for using a PCB block diagram tool for block diagram level editing of a PCB design abstracted from a PCB physical layout tool, the method comprising:

providing a plurality of interface objects representing interfaces between components, wherein each of the plurality of interface objects include a plurality of signal, power and ground signal lines without defined physical assignment to pin or pad;

providing a plurality of block objects representing a plurality of physical objects;

receiving indication of which of the plurality of interface objects should be associated with the plurality of blocks without requiring mapping to pins or pads;

assigning the plurality of interface objects to the plurality of blocks;

receiving indication of how interconnect lines connect the plurality of interface objects with the plurality of block objects; and

assigning interconnect lines using a computer.

9. The method for using a PCB block diagram tool for block diagram level editing of the PCB design abstracted from the PCB physical layout tool as recited in claim 8, further comprising mapping each of the plurality of block objects to the plurality of physical objects.

10. The method for using a PCB block diagram tool for block diagram level editing of the PCB design abstracted from the PCB physical layout tool as recited in claim 8, wherein the plurality of physical objects virtually describe connectors and/or packages in a domain of the PCB physical layout tool.

11. The method for using a PCB block diagram tool for block diagram level editing of the PCB design abstracted from the PCB physical layout tool as recited in claim 8, wherein the plurality of interface objects define signal grouping and signal names.

12. The method for using a PCB block diagram tool for block diagram level editing of the PCB design abstracted from the PCB physical layout tool as recited in claim 8, further comprising passing information between the PCB block diagram tool and the PCB physical layout tool while preserving abstraction in the plurality of interface objects from defined physical assignment to pins and pads, wherein the PCB physical layout tool comprises a plurality physical objects that correspond to the plurality of block objects.

13. The method for using a PCB block diagram tool for block diagram level editing of the PCB design abstracted from the PCB physical layout tool as recited in claim 8, further comprising passing the PCB physical layout tool names of the plurality of signal, power and ground lines, wherein the names are preserved in the PCB physical layout tool regardless of whether the names are assigned to pins or pads.

14. A non-transitory machine-readable storage medium comprising executable instructions for a PCB block diagram tool that provides block diagram level editing of a PCB design abstracted from a PCB physical layout tool, the executable instructions comprising code for:

receiving indication of which of a plurality of interface objects should be associated with a plurality of blocks, wherein;

the plurality of interface objects represent interfaces between components,

each of the plurality of interface objects include a plurality of signal, power and ground signal lines without defined physical assignment to pin or pad, and

the plurality of block objects represent a plurality of physical objects;

assigning the plurality of interface objects to the plurality of blocks without requiring mapping to pins or pads;

receiving indication of how interconnect lines connect the plurality of interface objects with the plurality of block objects; and

assigning interconnect lines.

15. The non-transitory machine-readable storage medium comprising executable instructions for the PCB block diagram tool that provides block diagram level editing of the PCB design abstracted from the PCB physical layout tool as recited in claim 14, further comprising code for mapping each of the plurality of block objects to the plurality of physical objects.

16. The non-transitory machine-readable storage medium comprising executable instructions for the PCB block diagram tool that provides block diagram level editing of the PCB design abstracted from the PCB physical layout tool as recited in claim 14, further comprising code for passing information between the PCB block diagram tool and the PCB physical layout tool while preserving abstraction in the plurality of interface objects from defined physical assignment to pins and pads, wherein the PCB physical layout tool comprises a plurality of physical objects that correspond to the plurality of block objects.

17. The non-transitory machine-readable storage medium comprising executable instructions for the PCB block diagram tool that provides block diagram level editing of the PCB design abstracted from the PCB physical layout tool as recited in claim 14, further comprising code for passing the PCB physical layout tool names of the plurality of signal, power and ground lines, wherein the names are preserved in the PCB physical layout tool regardless of whether the names are assigned to pins or pads.