Network communication control apparatus, system and method

摘要

Aspects of the present disclosure are directed to single-wire bus communications. In accordance with one or more embodiments, a pull-up current is delimited when a single-wire bus circuit is operated at a dominant level during the transmission of data on the single-wire bus circuit. This approach can be implemented to facilitate power savings, such as in applications involving a master control circuit that transmits signals by driving the single-wire bus circuit between dominant and recessive levels.

主权项

1. An apparatus comprising:
a voltage source; a master control circuit configured and arranged to transmit signals by driving a single-wire bus circuit at a dominant level and at a recessive level; an impedance-bias circuit configured and arranged with the voltage source to pull up a voltage level on the bus circuit, using a pull-up current that passes through the impedance bias circuit, while the master control circuit transmits the signals; and a current delimiter circuit connected between the voltage source and the impedance-bias circuit, the current delimiter circuit being configured and arranged to
delimit the pull-up current in response to a transition of the bus circuit from the recessive level to the dominant level,maintain the delimiting until the bus circuit transitions to the recessive level,cease the delimiting of the pull-up current in response to a transition of the bus circuit from the dominant level to the recessive level, andmaintain the cessation of the delimiting until the bus circuit is to be driven to the dominant level.