Apparatus For Source-Synchronous Information Transfer And Associated Methods

A system, comprising:

• an electronic device that uses a raw strobe signal to communicate in a source synchronous manner;
• and
• an interface circuit that is coupled to the electronic device and that receives the raw strobe signal, wherein the interface circuit is operable to gate the raw strobe signal to generate a gated strobe signal, the interface circuit comprising:
• a register, wherein the register has a clock input that receives the raw strobe signal, an input, an output, and a set input;
• a first logic gate, wherein the first logic gate has an input coupled to the output of the register;
• and
• a second logic gate, wherein the second logic gate has a first input that receives the raw strobe signal and a second input coupled to an output of the first logic gate.

Interface circuitry that performs source synchronous communication with an electronic device using a raw strobe signal received from the electronic device, the interface circuitry comprising:

• a register that is clocked using the raw strobe signal, wherein the interface circuitry gates the raw strobe signal to generate a gated strobe signal;
• a logic gate, wherein the logic gate has a first input that receives a raw signal that is different from the raw strobe signal and a second input that receives a configuration bit that is different from the raw strobe signal, and wherein the logic gate generates an output signal based on the configuration bit and the raw signal;
• and
• a shift circuit that shifts the output signal generated by the logic gate to generate a shifted enable signal, wherein the register receives the shifted enable signal generated by the shift circuit.