Patent ID: 7464202

Claim:
A clocking circuit in a motor vehicle designed to control an application of a clock (CLK) signal utilized in automatically transferring data from an external or remote device in the motor vehicle to a host device or controller in the motor vehicle, comprising: a first multiplexer configured to receive a transmit clock enable (TCE) signal and a transmit active (TACTIVE) signal, where the TCE signal enables the CLK signal to pass into the circuit, and where the TACTIVE signal allows the CLK signal to selectively pass into the circuit based upon the transmission of data; a transmission mode (TMODE) selection component operatively coupled to the first multiplexer, and configured to operate in an enable mode and in a selectively enable mode, where the enable mode causes the first multiplexer to output the TCE signal and where the selectively enable mode causes the first multiplexer to output the TACTIVE signal; an AND logic component configured to receive the output from the first multiplexer and the CLK signal; an inverter component operatively coupled to the AND component and operative to invert the output from the AND component; a second multiplexer operatively coupled to the AND component and the inverter, the second multiplexer configured to receive the output from the AND component and the output from the inverter at separate inputs thereof, and operative to output a transmission clock (TCLK) signal that causes data to be transmitted from the external or remote device in the motor vehicle to the host device or controller in the motor vehicle; and a transmission control protocol (TCP) component operatively coupled to the second multiplexer; and configured to operate in a non-inverted mode and in an inverted mode, where the non-inverted mode causes the second multiplexer to output the non-inverted signal output from the AND component as the TCLK signal and where the inverted mode causes the second multiplexer to output the inverted signal output from the inverter as the TCLK signal.