Motorola Corporation

Stefania Gandal

Moti Kurnick

Yehuda Shaik

Vadim Vayzer

Boris Zabarski

Alick Einav

A method and a device for translating a hierarchical address, the device is adapted to receive a destination address, to search an array of sorted binary string being associated with a group of addresses reachable through the device, and to provide a best matching address, the device comprising: a content addressable memory module, for storing a first portion of the array of sorted binary strings; a fast memory module, for storing a second portion of the sorted binary strings; a memory module, for storing a remaining portion of the tree of sorted strings; and a search engine, coupled to the content addressable memory unit module, the fast memory module and the memory module, configured to receive a destination address, access at least the fast memory unit and the memory unit and to find the best matching address.

Method and apparatus for performing hierarchical address translation

A clock system (2) for providing a system clock signal at a clock output (4) for use by a processing unit comprises a first oscillator circuit (6) which is enabled in response to a wake up signal provided by the processing unit to provide a first clock signal (RINGO CLOCK) at an output, and a second oscillator circuit (8) comprising a PLL (14) and an oscillator (16). The second oscillator (8) circuit provides a second clock signal (PLL CLOCK) and a lock signal (LOCKED) at first and second outputs respectively when the PLL is locked. The clock system (2) further comprises control circuitry (10) coupled to the output of the first oscillator circuit (6) and to the first and second outputs of the second oscillator circuit (8) for coupling the first clock signal (RINGO CLOCK) to the clock output (4) to provide the system clock signal or when the control circuitry (10) receives the lock signal (LOCKED) for coupling the second clock signal (PLL CLOCK) and not the first clock signal (RINGO CLOCK) to the clock output (4) to provide the system clock signal.

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Herzelia, Israel

Stefania Gandal