CLOCK/POWER-DOMAIN CROSSING CIRCUIT WITH ASYNCHRONOUS FIFO AND INDEPENDENT TRANSMITTER AND RECEIVER SIDES

摘要

An electronic circuit includes transmit-side circuitry and receive-side circuitry. The transmit-side circuitry belongs to a first domain of the circuit and is configured to transmit a data signal from the first domain to a second domain of the circuit. The receive-side circuitry belongs to the second domain and is configured to receive the transmitted data signal. The receive-side circuitry is configured to transfer to the transmit-side circuitry a read pointer value indicative of a readout position in a buffer memory that buffers the data signal, and to retain the read pointer value in a non-volatile element that is accessible to the transmit-side circuitry.

主权项

1. An electronic circuit, comprising:
transmit-side circuitry, which belongs to a first domain of the circuit and is configured to transmit a data signal from the first domain to a second domain of the circuit; and receive-side circuitry, which belongs to the second domain and is configured to receive the transmitted data signal, wherein the receive-side circuitry is configured to transfer to the transmit-side circuitry a read pointer value indicative of a readout position in a buffer memory that buffers the data signal, and to retain the read pointer value in a non-volatile element that is accessible to the transmit-side circuitry.