US 12,003,346 B2
System and method for dual-port communication and power delivery
Wuguang Liu, Beijing (CN); and Stewart Merkel, Frisco, TX (US)
Assigned to Maxim Integrated Products, Inc., San Jose, CA (US)
Filed by Maxim Integrated Products, Inc., San Jose, CA (US)
Filed on Dec. 23, 2020, as Appl. No. 17/132,340.
Claims priority of provisional application 62/960,580, filed on Jan. 13, 2020.
Prior Publication US 2021/0218595 A1, Jul. 15, 2021
Int. Cl. H04L 12/40 (2006.01); G06F 1/26 (2006.01); G06F 13/40 (2006.01); H02J 7/00 (2006.01); H04B 3/54 (2006.01)
CPC H04L 12/40045 (2013.01) [G06F 1/266 (2013.01); G06F 13/4027 (2013.01); G06F 13/4059 (2013.01); H02J 7/007 (2013.01); H04B 3/548 (2013.01); H04L 12/40032 (2013.01); H02J 2310/22 (2020.01)] 19 Claims
OG exemplary drawing
 
1. A dual-port circuit for single wire communication, comprising:
a first interface to communicate with a first circuit via a first single wire link, in response to a voltage on the first single wire link being higher than a predetermined threshold voltage, a charging activity using the voltage on the first single wire link is enabled, the predetermined threshold voltage is higher than an operation voltage on the first single wire link for data communication;
a second interface to communicate with a second circuit via a second single wire link, one of the first single wire link and the second single wire link is enabled at a given time for single wire data communication, the first interface and the second interface establish, upon activation, a bidirectional level translation between the first single wire link and the second single wire link in a pass through mode; and
a buffer in communication with the first single wire link and the second single wire links for data transfer data during single wire data communication.