IC for handheld computing unit of a computing device

• US 8,117,370 B2
• Filed: 02/06/2008
• Issued: 02/14/2012
• Est. Priority Date: 02/06/2008
• Status: Active Grant

• Current Assignee: Avago Technologies International Sales Pte Limited (Broadcom, Inc.)
• Original Assignee: Broadcom Corporation (Broadcom, Inc.)
• Inventors: Rofougaran, Ahmadreza (Reza), Markison, Timothy W.
• Primary Examiner(s): Myers, Paul R.
• Assistant Examiner(s): Cerullo, Jeremy S
• Application Number:
  US12/026,689
• Publication Number:
  US 20090198855A1
• Time in Patent Office: 1,469 Days
• Field of Search: 710/303, 710/104, 710/304
• US Class Current: 710/303
• CPC Class Codes: G06F 1/1632 External expansion units, e.g. docking stations
• CPC Class Codes: G06F 15/7842 on one IC chip (single chip microcontrollers)

Abstract

An IC includes a processing module, on-chip memory, one or more block input/output (I/O) interfaces for coupling to one or more off-chip block I/O devices, one or more character I/O interfaces for coupling to one or more off-chip character I/O devices when active, a main memory interface for coupling to off-chip main memory, a baseband processing module, an RF section, a processing module interface, and an IC bus structure. The processing module interface couples the processing module to an off-chip connection structure, wherein, when a handheld computing unit that includes the IC is docked to an extended computing unit, the off-chip connection structure couples the handheld computing unit to the extended computing unit such that the IC is in a docked mode.

Claims

1. An integrated circuit (IC) for a handheld computing unit to facilitate docking to an extended computing unit in one of a plurality of docking modes, the IC comprises:

a processing module;

on-chip memory;

one or more block input/output (I/O) interfaces for coupling to one or more off-chip block I/O devices;

one or more character I/O interfaces for coupling to one or more off-chip character I/O devices when active;

a main memory interface for coupling to off-chip main memory;

a baseband processing module coupled to convert outbound data into an outbound symbol stream and to convert an inbound symbol stream into inbound data;

a radio frequency (RF) section coupled to convert the outbound symbol stream into an outbound RF signal and to convert an inbound RF signal into the inbound symbol stream;

a processing module interface for coupling the processing module to an off-chip connection structure, wherein, when the handheld computing unit that includes the IC is docked to the extended computing unit in the one of a plurality of docking modes, the off-chip connection structure couples the handheld computing unit to the extended computing unit wherein,

when the IC is in a remote mode of the one of the plurality of docking modes with respect to the extended computing unit, the one or more character I/O interfaces are active and the processing module interface is inactive,

when the IC is in the docked mode of the one of the plurality of docking modes, at least one of the one or more character I/O interfaces is inactive and the processing module interface is active; and

when the IC is in a quasi docked mode of the one of the plurality of docking modes, the IC establishes an RF communication path with the extended computing unit and at least one of the one or more block I/O interfaces are active; and

an IC bus structure coupled to the processing module, the on-chip memory, the one or more block I/O interfaces, the one or more character I/O interfaces, the main memory interface, and the baseband processing module.

2. The IC of claim 1 wherein:

the one or more block I/O interfaces including at least one of;

a disk drive interface; and

flash memory interface;

the one or more character I/O interfaces including at least one of;

a data input interface;

a display interface;

a video codec;

an audio codec;

a camera interface; and

a camcorder interface.

3. The IC of claim 1, wherein the baseband processing module and RF section function to provide one or more of:

wireless local area network (WLAN) connectivity; and

cellular telephone connectivity.

4. The IC of claim 1 further comprises:

a clock generator coupled to the connector structure, wherein the clock generator generates a master clock signal and one or more handheld clock signals, and wherein the clock generator generates the master clock signal and provides the master clock signal to the connector structure when the IC is in the docked mode.

5. The IC of claim 1, wherein the processing module interface comprises one or more of:

an on-chip portion of an on-chip to off-chip RF connector;

one or more IC pins; and

an on-chip portion of an on-chip to off-chip electromagnetic connector.

6. The IC of claim 1 further comprises:

a read only memory (ROM) that stores basic input/output system (BIOS), wherein a handheld computing unit incorporating the IC is booted in accordance with the BIOS when the IC is in the remote mode, and the handheld computing unit and an extended computing unit are booted as a combined unit when the IC is in the docked mode.

7. An integrated circuit (IC) for a handheld computing unit to facilitate docking to an extended computing unit in one of a plurality of docking modes, the IC comprises:

a processing module;

on-chip memory;

one or more block input/output (I/O) interfaces for coupling to one or more off-chip block I/O devices;

one or more character I/O interfaces for coupling to one or more off-chip character I/O devices when active;

a main memory interface for coupling to off-chip main memory;

a memory controller coupled to the processing module and the main memory interface;

a baseband processing module coupled to convert outbound data into an outbound symbol stream and to convert an inbound symbol stream into inbound data;

a radio frequency (RF) section coupled to convert the outbound symbol stream into an outbound RF signal and to convert an inbound RF signal into the inbound symbol stream;

a connector interface for coupling the memory controller to an off-chip connection structure, wherein, when the handheld computing unit that includes the IC is docked to the extended computing unit, the off-chip connection structure couples the handheld computing unit to the extended computing unit, wherein,

when the IC is in a remote mode of the one of the plurality of docking modes with respect to the extended computing unit, the one or more character I/O interfaces are active and the connector interface is inactive;

when the IC is in the docked mode of the one of the plurality of docking modes, at least one of the one or more character I/O interfaces is inactive and the connector interface is active; and

when the IC is in a quasi docked mode of the one of the plurality of docking modes, the IC establishes an RF communication path with the extended computing unit and at least one of the one or more block I/O interfaces are active; and

an IC bus structure coupled to the memory controller, the one or more block I/O interfaces, the one or more character I/O interfaces, the on-chip memory, and the baseband processing module.

8. The IC of claim 7 wherein:

the one or more block I/O interfaces including at least one of;

a disk drive interface; and

flash memory interface;

the one or more character I/O interfaces including at least one of;

a data input interface;

a display interface;

a video codec;

an audio codec;

a camera interface; and

a camcorder interface.

9. The IC of claim 7, wherein the baseband processing module and RF section function to provide one or more of:

wireless local area network (WLAN) connectivity; and

cellular telephone connectivity.

10. The IC of claim 7 further comprises:

a clock generator coupled to the connector structure, wherein the clock generator generates a master clock signal and one or more handheld clock signals, and wherein the clock generator generates the master clock signal and provides the master clock signal to the connector structure when the IC is in the docked mode.

11. The IC of claim 7, wherein the connector interface comprises one or more of:

an on-chip portion of an on-chip to off-chip RF connector;

one or more IC pins; and

an on-chip portion of an on-chip to off-chip electromagnetic connector.

12. The IC of claim 7 further comprises:

a read only memory (ROM) that stores basic input/output system (BIOS), wherein a handheld computing unit incorporating the IC is booted in accordance with the BIOS when the IC is in the remote mode, and the handheld computing unit and an extended computing unit are booted as a combined unit when the IC is in the docked mode.

13. An integrated circuit (IC) for a handheld computing unit to facilitate docking to an extended computing unit in one of a plurality of docking modes, the IC comprises:

a processing module;

on-chip memory;

one or more block input/output (I/O) interfaces for coupling to one or more off-chip block I/O devices;

one or more character I/O interfaces for coupling to one or more off-chip character I/O devices when active;

a main memory interface for coupling to off-chip main memory;

a memory controller coupled to the processing module and the main memory interface;

a baseband processing module coupled to convert outbound data into an outbound symbol stream and to convert an inbound symbol stream into inbound data;

a radio frequency (RF) section coupled to convert the outbound symbol stream into an outbound RF signal and to convert an inbound RF signal into the inbound symbol stream;

an IC bus structure coupled to the on-chip memory, the main memory interface, the processing module, the memory controller, the one or more block I/O interfaces, the one or more character I/O interfaces, and the baseband processing module; and

a connector interface for coupling the IC bus structure to an off-chip connection structure, wherein, when the handheld computing unit that includes the IC is docked to the extended computing unit, the off-chip connection structure couples the handheld computing unit to the extended computing unit, wherein,

when the IC is in a remote mode of the one of the plurality of docking modes with respect to the extended computing unit, the one or more character I/O interfaces are active and the connector interface is inactive;

when the IC is in the docked mode of the one of the plurality of docking modes, at least one of the one or more character I/O interfaces is inactive and the connector interface is active; and

when the IC is in a quasi docked mode of the one of the plurality of docking modes, the IC establishes an RF communication path with the extended computing unit and at least one of the one or more block I/O interfaces are active.

14. The IC of claim 13 wherein:

the one or more block I/O interfaces including at least one of;

a disk drive interface; and

flash memory interface;

the one or more character I/O interfaces including at least one of;

a data input interface;

a display interface;

a video codec;

an audio codec;

a camera interface; and

a camcorder interface.

15. The IC of claim 13, wherein the baseband processing module and RF section function to provide one or more of:

wireless local area network (WLAN) connectivity; and

cellular telephone connectivity.

16. The IC of claim 13 further comprises:

a clock generator coupled to the connector structure, wherein the clock generator generates a master clock signal and one or more handheld clock signals, and wherein the clock generator generates the master clock signal and provides the master clock signal to the connector structure when the IC is in the docked mode.

17. The IC of claim 13, wherein the connector interface comprises one or more of:

an on-chip portion of an on-chip to off-chip RF connector;

one or more IC pins; and

an on-chip portion of an on-chip to off-chip electromagnetic connector.

18. The IC of claim 13 further comprises:

a read only memory (ROM) that stores basic input/output system (BIOS), wherein a handheld computing unit incorporating the IC is booted in accordance with the BIOS when the IC is in the remote mode, and the handheld computing unit and an extended computing unit are booted as a combined unit when the IC is in the docked mode.