Multiple function integrated circuit

• US 20060075166A1
• Filed: 12/05/2005
• Published: 04/06/2006
• Est. Priority Date: 10/25/2002
• Status: Abandoned Application

• Current Assignee: Aaron Grassian, Daniel Mulligan, Marcus W. May
• Original Assignee: Aaron Grassian, Daniel Mulligan, Marcus W. May
• Inventors: May, Marcus W., Mulligan, Daniel, Grassian, Aaron
• Application Number:
  US11/294,164
• Publication Number:
  US 20060075166A1
• Time in Patent Office: Days
• US Class Current: 710/62
• CPC Class Codes: G06F 1/1613 for portable computers cooling arrangements therefor G06F1/203; constructional details or arrangements for pocket calculators, electronic agendas or books G06F15/0216; constructional details of portable telephone sets: with several bodies H04M1/0202

Abstract

An integrated circuit for a multi-function handheld device includes a host interface, a bus, a processing module, a memory interface, a multimedia module, and a DC-to-DC converter. The host interface is operable to receive or transmit data with a host device when the multi-function handheld device is operably coupled to the host device. The processing module functions to place the multi-function handheld device in a first functional mode when the host interface is operably coupled to the host device and places the multi-function handheld device in a second functional mode when the host interface is not operably coupled to the host device. The memory interface is operably coupled to, when the multi-function handheld device is in the first functional mode, provide data received from the host device to memory for storage. The memory interface also provides data retrieved from the memory to the host interface for transmission to the host device. The multimedia module is operably coupled to, when the multi-function handheld device is in the second functional mode, to convert data stored in the memory into rendered output data.

Claims

1. An integrated circuit for an MP3 player comprises:

a universal serial bus (USB) interface operable to receive or transmit data with a host device when the MP3 player is operably coupled to the host device via the USB interface;

a bus operably coupled to the USB interface;

a digital signal processor (DSP) operably coupled to the bus, wherein the DSP places the MP3 device in a first functional mode when the USB interface is operably coupled to the host device and places the MP3 device in a second functional mode when the USB interface is not operably coupled to the host device;

external memory interface operably coupled to the bus and memory, wherein, when the MP3 device is in the first functional mode, the external memory interface provides received data of the data received from the host device to the memory for storage and provides transmitting data of the data transmitted to the host device from the memory to the USB interface via the bus;

an analog to digital converter (ADC) for converting an analog input signal into a digital input data that is placed on the bus;

a digital to analog converter (DAC) for converting output data into analog audio outputs signals;

clock generator operably coupled to produce a clock signal for at least one of the DSP, the ADC, the USB interface, and the DAC; and

DC to DC converter operably coupled to provide at least a first supply voltage to at least one of the host interface, the processing module, the memory interface, and the multimedia module.