Communication timing coordination techniques
AssigneeBroadcom Corporation
InventorsMartin Kuhlmann, Robindra B. Joshi
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Abstract
A communication unit (30) arranged to send transmit data includes a receiver (32) arranged to recover input data transmitted at a downstream transfer rate in response to a symbol clock (20) signal. A transmitter (40) is arranged to transmit the transmit data at an upstream transfer rate in response to an upstream transmit clock signal (TX_CLKA) that is coordinated with the symbol clock signal. The frequency or repetition rate of the upstream transmit clock signal is defined at least in part by a predetermined relationship between the downstream transfer rate and the upstream transfer rate, such as a ratio of the downstream transfer rate and the upstream transfer rate.
Claims38
A communication unit for sending transmit data comprising:
- a receiver arranged to recover input data transmitted at a first transfer rate in response to a first transmit clock signal;
- and
- a transmitter arranged to transmit the transmit data at a second transfer rate in response to a second transmit clock signal coordinated with the first transmit clock signal, said second transmit clock signal comprising a frequency defined at least in part by a predetermined relationship between the first transfer rate and second transfer rate.
A method of sending transmit data comprising:
- recovering input data transmitted at a first transfer rate in response to a first transmit clock signal;
- generating a second transmit clock signal coordinated with the first transmit clock signal;
- and
- transmitting the transmit data in response to the second transmit clock signal at a second transfer rate, said second transmit clock signal comprising a frequency defined at least in part by a predetermined relationship between the first transfer rate and second transfer rate.
Dependencies are inferred from the claim text.