US 11,855,800 B1
One-line synchronous interface
Leonid Goldin, Ottawa (CA); and Greg Anton Armstrong, Ottawa (CA)
Assigned to Renesas Electronics America Inc., Milpitas, CA (US)
Filed by Renesas Electronics America Inc., Milpitas, CA (US)
Filed on Sep. 2, 2022, as Appl. No. 17/902,139.
Int. Cl. H04B 1/69 (2011.01); H04B 1/707 (2011.01); H04B 1/713 (2011.01); H04L 12/40 (2006.01); H04L 7/06 (2006.01)
CPC H04L 12/40013 (2013.01) [H04L 7/06 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An apparatus comprising:
a buffer configured to:
operate in an output mode to output signals to a trace; and
operate in an input mode to receive signals from the trace;
a controller connected to the buffer, the controller being configured to:
control the buffer to output a synchronization pulse to the trace periodically at a time interval;
in response to each output of the synchronization pulse, switch the buffer from the output mode to the input mode;
in response to the switch of the buffer from the output mode to the input mode, listen for incoming data on the trace; and
in response to the buffer operating the input mode for a predetermined time, switch the buffer from the input mode to the output mode, wherein the predetermined time is less than the time interval.