Broadcom Corporation

Daniel C Bozich

Yuqian Cedric Wong

Mitchell A Buznitsky

Brima Babatunde Ibrahim

Langford M Wasada

Determination and processing for fractional-N programming values. The present invention is operable to receive a clock signal (CLK) and to transform that CLK into a new CLK, when necessary, for use by various circuitries within a system. The present invention is operable to generate two different CLKs for use by a radio frequency (RF) circuitry and a baseband processing circuitry in certain embodiments. The present invention employs a measurement circuitry and to characterize a first CLK and uses a fractional-N synthesizer to perform any necessary processing to generate the one or more CLKs to the other CLKs within the system. The first CLK may be received from an external source or it may be generated internally; in either case, the present invention is able to modify the CLK into another CLK for use by other circuitries within the system or for use by another external device.

Determination and processing for fractional-N programming values

An embedded ROM-based processor system including a processor, system memory, a programmable memory, a data selector and a patch controller. The system memory includes a read-only memory (ROM). The programmable memory stores patch information including patch code and one or more patch vectors. Each patch vector includes a break-out address from the ROM and a patch-in address to a corresponding location within the patch code. The data selector has an input coupled to the system memory and an output coupled to the processor. The patch controller is operative to compare an address provided by the processor with each break-out address to determine a breakout condition, and to control the selector to transfer the processor to a corresponding location within the patch code in response to a break-out condition. The programmable memory may be volatile memory, where the patch information is loaded from an external memory during initialization.

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San Diego, CA, United States of America

Daniel C Bozich