Galileo Technologies Ltd.

Galileo Technology Ltd.

Eyal Waldman

David Shemla

Yosef Solt

Yosi Sholt

Doron Shefert

A write-only data transfer protocol for peripheral component interface busses and a method for transferring data between source and destination communication units is provided. The method includes the source communication unit writing a buffer allocation request to the destination unit and, in response to the buffer allocation request, the destination communication unit allocating space within an associated buffer to receive the data to be sent. The method also includes the destination communication unit writing at least the location of the allocated buffer to the source communication unit and the source communication unit writing the data to be sent to the allocated buffer location.

Bus protocol

A data transfer synchronizing unit is provided for generating flags indicating the fullness state of a data transfer element. The determining unit includes the first and second counters operating according to first and second clock signals, first and second registers, serially connected to the output of the second counter, a latch unit and a comparator. The first register is clocked by the second clock signal and the second register is clocked by the first clock signal. The latch unit alternately activates the first and second registers to receive data in accordance with the second and first clock signals, respectively. The comparator produces the flags by comparing the output of the first counter with the output of the second register.

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K. Tivon, Israel

Eyal Waldman