Abstract: In one embodiment, a rate adaptation device comprises one or more input/output (I/O) ports coupled to a first network operating at a first data transmission rate, a first physical coding sublayer (PCS) receiver to receive a stream of PCS blocks from the first network, an idle symbol remover to remove a sequence of idle symbols from the first PCS block and combine the one or more non-idle PCS symbols in a buffer with one or more non-idle PCS symbols from a second PCS block to form a third PCS block, and a PCS transmitter to transmit the third PCS block to a second network operating at a second data transmission rate.

Abstract: In one embodiment, a rate adaptation device comprises one or more input/output (I/O) ports coupled to a first network operating at a first data transmission rate, a first physical coding sublayer (PCS) receiver to receive a stream of PCS blocks from the first network, an idle symbol remover to remove a sequence of idle symbols from the first PCS block and combine the one or more non-idle PCS symbols in a buffer with one or more non-idle PCS symbols from a second PCS block to form a third PCS block, and a PCS transmitter to transmit the third PCS block to a second network operating at a second data transmission rate.

Abstract: The present invention allows data transmissions to cross from one clock domain to another, in one embodiment, the invention includes an idle removing block operating at a first clock speed to remove idles from received data stream, a buffer coupled to the idle removing block to receive the data packets from the idle removing block, the buffer generating an idle removal control signal to the idle removing block to enable the removal of idles by the idle removing block, and an idle insertion block coupled to the buffer to receive data stream from the buffer and insert idles into the data packets, the idle insertion block receiving an idle insertion control signal from the buffer to enable the insertion of idles.

Abstract: The present invention allows data transmissions to cross from one clock domain to another, in one embodiment, the invention includes an idle removing block operating at a first clock speed to remove idle bits from received data packets, a buffer coupled to the idle removing block to receive the data packets from the idle removing block, the buffer generating an idle insertion control signal to the idle removing block to enable the removal of idle bits by the idle removing block, and an idle insertion block coupled to the buffer to receive data packets from the buffer and insert idle bits into the data packets, the idle insertion block receiving an idle insertion control signal from the buffer to enable the insertion of idle bits.