Method for synchronizing a transmission of information and a device having synchronizing capabilities
View Patent ↗A method for synchronizing a transmission of information over a bus, and a device having synchronization capabilities. The device includes: a bus that includes multiple bus lines, a bus transmitter connected between an information source and the bus, a bus receiver connected between the bus and an information target; wherein the information source and the information target are mutually asynchronous; wherein the device is characterized by including a bus receiver control circuit that controls the bus receiver circuit and a bus transmitter control circuit that controls the bus transmitter circuit; wherein the bus transmitter control circuit enables to transmit information from the information source to the bus in response to a change in a value of a feedback signal sent from the bus receiver control circuit and wherein the bus receiver control circuit enables to provide information from the bus to the information target in response to a change in a value of a delayed strobe signal provided by a delay unit connected between the bus receiver control circuit and the bus transmitter control circuit.
1. A device comprising:
a bus that comprises multiple bus lines; a bus transmitter circuit coupled between an information source and the bus; a bus receiver circuit coupled between the bus and an information target; wherein the information source and the information target are mutually asynchronous; a bus receiver control circuit that controls the bus receiver circuit and a bus transmitter control circuit that controls the bus transmitter circuit; wherein the bus transmitter control circuit enables the bus transmitter circuit to transmit information from the information source to the bus in response to a change in a value of a feedback signal sent from the bus receiver control circuit; and wherein the bus receiver control circuit enables the bus receiver circuit to provide information from the bus to the information target in response to a change in a value of a delayed strobe signal provided by a delay unit coupled between the bus receiver control circuit and the bus transmitter control circuit; and
wherein the bus transmitter control circuit sends a strobe signal to a delay unit that provides a delayed strobe signal to the receiver control circuit; and wherein a delay period of the delay unit is substantially equal to a maximal delay period introduced by lines of the bus.
2. A device comprising:
a bus that comprises multiple bus lines; a bus transmitter circuit coupled between an information source and the bus; a bus receiver circuit coupled between the bus and an information target; wherein the information source and the information target are mutually asynchronous; a bus receiver control circuit that controls the bus receiver circuit and a bus transmitter control circuit that controls the bus transmitter circuit; wherein the bus transmitter control circuit enables the bus transmitter circuit to transmit information from the information source to the bus in response to a change in a value of a feedback signal sent from the bus receiver control circuit; wherein the bus receiver control circuit enables the bus receiver circuit to provide information from the bus to the information target in response to a change in a value of a delayed strobe signal provided by a delay unit coupled between the bus receiver control circuit and the bus transmitter control circuit; and
wherein the bus transmitter control circuit sends a strobe signal to a delay unit that provides a delayed strobe signal to the receiver control circuit; and wherein a delay period of the delay unit ranges between a maximal delay period introduced by lines of the bus and half of a bus transmitter circuit clock cycle.
3. A device comprising:
a bus that comprises multiple bus lines; a bus transmitter circuit coupled between an information source and the bus; a bus receiver circuit coupled between the bus and an information target; wherein the information source and the information target are mutually asynchronous; a bus receiver control circuit that controls the bus receiver circuit and a bus transmitter control circuit that controls the bus transmitter circuit; wherein the bus transmitter control circuit enables the bus transmitter circuit to transmit information from the information source to the bus in response to a change in a value of a feedback signal sent from the bus receiver control circuit; wherein the bus receiver control circuit enables the bus receiver circuit to provide information from the bus to the information target in response to a change in a value of a delayed strobe signal provided by a delay unit coupled between the bus receiver control circuit and the bus transmitter control circuit; and
wherein the bus transmitter circuit comprises multiple multiplexers that select whether to send to the bus new information from the information source or information previously provided to the bus.
4. A device comprising:
a bus that comprises multiple bus lines; a bus transmitter circuit coupled between an information source and the bus; a bus receiver circuit coupled between the bus and an information target; wherein the information source and the information target are mutually asynchronous; a bus receiver control circuit that controls the bus receiver circuit and a bus transmitter control circuit that controls the bus transmitter circuit; wherein the bus transmitter control circuit enables the bus transmitter circuit to transmit information from the information source to the bus in response to a change in a value of a feedback signal sent from the bus receiver control circuit; wherein the bus receiver control circuit enables the bus receiver circuit to provide information from the bus to the information target in response to a change in a value of a delayed strobe signal provided by a delay unit coupled between the bus receiver control circuit and the bus transmitter control circuit; wherein the bus transmitter circuit receives a bus transmitter clock signal and wherein the bus receiver circuit receives a bus receiver clock signal; and
wherein the bus transmitter clock signal is faster than the bus receiver clock signal and wherein each bus receiver clock cycle new information is transmitted over the bus.
5. A device comprising:
a bus that comprises multiple bus lines; a bus transmitter circuit coupled between an information source and the bus; a bus receiver circuit coupled between the bus and an information target; wherein the information source and the information target are mutually asynchronous; a bus receiver control circuit that controls the bus receiver circuit and a bus transmitter control circuit that controls the bus transmitter circuit; wherein the bus transmitter control circuit enables the bus transmitter circuit to transmit information from the information source to the bus in response to a change in a value of a feedback signal sent from the bus receiver control circuit; wherein the bus receiver control circuit enables the bus receiver circuit to provide information from the bus to the information target in response to a change in a value of a delayed strobe signal provided by a delay unit coupled between the bus receiver control circuit and the bus transmitter control circuit; wherein the bus transmitter circuit receives a bus transmitter clock signal and wherein the bus receiver circuit receives a bus receiver clock signal; and
wherein the bus transmitter clock signal and the bus receiver clock signal are characterized by substantially the same frequency and wherein new information is transmitted over the bus every two bus receiver clock cycles.
6. A method for synchronizing a transmission of information over a bus, the method comprises:
receiving, by a bus transmitter circuit that is controlled by a bus transmitter control circuit, information provided by an information source, transmitting, by the bus transmitter circuit to a bus receiver circuit controlled by a bus receiver control circuit, the information over the bus, and providing, by the bus receiver circuit, the transmitted information to an information target; wherein the information source and the information target are mutually asynchronous; monitoring a value of a feedback signal provided to the bus transmitter control circuit by the bus receiver control circuit; selectively enabling, by the bus transmitter control circuit, the transmitting of information in response to a change in a value of the feedback signal; monitoring a value of a delayed strobe signal provided to the bus receiver control circuit by a delay unit and selectively enabling the providing of the transmitted information to the information target in response to a change in a value of the delayed strobe signal; and
delaying a strobe signal by a delay unit to provide the delayed strobe signal;
wherein a delay period of the delay unit is substantially equal to a maximal delay period introduced by lines of the bus.
7. A method for synchronizing a transmission of information over a bus, the method comprises:
receiving, by a bus transmitter circuit that is controlled by a bus transmitter control circuit, information provided by an information source, transmitting, by the bus transmitter circuit to a bus receiver circuit controlled by a bus receiver control circuit, the information over the bus, and providing by the bus receiver circuit, the transmitted information to an information target; wherein the information source and the information target are mutually asynchronous; monitoring a value of a feedback signal provided to the bus transmitter control circuit by the bus receiver control circuit; selectively enabling, by the bus transmitter control circuit, the transmitting of information in response to a change in a value of the feedback signal; monitoring a value of a delayed strobe signal provided to the bus receiver control circuit by a delay unit and selectively enabling the providing of the transmitted information to the information target in response to a change in a value of the delayed strobe signal; and
delaying a strobe signal by a delay unit to provide the delayed strobe signal; wherein a delay period of the delay unit ranges between a maximal delay period introduced by lines of the bus and half of a bus transmitter circuit clock cycle.
8. A method for synchronizing a transmission of information over a bus, the method comprises:
receiving, by a bus transmitter circuit that is controlled by a bus transmitter control circuit, information provided by an information source, transmitting, by the bus transmitter circuit to a bus receiver circuit controlled by a bus receiver control circuit, the information over the bus, and providing by the bus receiver circuit, the transmitted information to an information target; wherein the information source and the information target are mutually asynchronous; monitoring a value of a feedback signal provided to the bus transmitter control circuit by the bus receiver control circuit; selectively enabling, by the bus transmitter control circuit, the transmitting of information in response to a change in a value of the feedback signal; monitoring a value of a delayed strobe signal provided to the bus receiver control circuit by a delay unit and selectively enabling the providing of the transmitted information to the information target in response to a change in a value of the delayed strobe signal; and
wherein the transmitting comprises selecting to output to the bus new information from the information source instead of information previously provided to the bus.
9. A method for synchronizing a transmission of information over a bus, the method comprises:
receiving, by a bus transmitter circuit that is controlled by a bus transmitter control circuit, information provided by an information source, transmitting, by the bus transmitter circuit to a bus receiver circuit controlled by a bus receiver control circuit, the information over the bus, and providing, by the bus receiver circuit, the transmitted information to an information target; wherein the information source and the information target are mutually asynchronous; monitoring a value of a feedback signal provided to the bus transmitter control circuit by the bus receiver control circuit; selectively enabling, by the bus transmitter control circuit, the transmitting of information in response to a change in a value of the feedback signal; monitoring a value of a delayed strobe signal provided to the bus receiver control circuit by a delay unit and selectively enabling the providing of the transmitted information to the information target in response to a change in a value of the delayed strobe signal; providing to the bus transmitter circuit a bus transmitter clock signal and providing to the bus receiver circuit a bus receiver clock signal; and
wherein the bus transmitter clock signal is faster than the bus receiver clock signal and wherein the transmitting comprises transmitting new information every bus receiver clock cycle.
10. A method for synchronizing a transmission of information over a bus, the method comprises:
receiving, by a bus transmitter circuit that is controlled by a bus transmitter control circuit, information provided by an information source, transmitting, by the bus transmitter circuit to a bus receiver circuit controlled by a bus receiver control circuit, the information over the bus, and providing, by the bus receiver circuit, the transmitted information to an information target; wherein the information source and the information target are mutually asynchronous; monitoring a value of a feedback signal provided to the bus transmitter control circuit by the bus receiver control circuit; selectively enabling, by the bus transmitter control circuit, the transmitting of information in response to a change in a value of the feedback signal; monitoring a value of a delayed strobe signal provided to the bus receiver control circuit by a delay unit and selectively enabling the providing of the transmitted information to the information target in response to a change in a value of the delayed strobe signal; providing to the bus transmitter circuit a bus transmitter clock signal and providing to the bus receiver circuit a bus receiver clock signal; and
wherein the bus transmitter clock signal and the bus receiver clock signal are characterized by substantially the same frequency and wherein the transmitting comprises transmitting new information every two bus receiver clock cycles.
11. The device according to claim 1 wherein the bus transmitter circuit comprises multiple multiplexers that select whether to send to the bus new information from the information source or information previously provided to the bus.
12. The method according to claim 6 wherein the transmitting comprises selecting to output to the bus new information from the information source instead of information previously provided to the bus.