US 11,809,355 B2
UART aggregation and JTAG selection circuitry for a multi-solid state drive environment
Lock Duc Nguyen, Morgan Hill, CA (US); Akshay Ganesh, San Jose, CA (US); Priyadarsini Lanka, San Jose, CA (US); Ping Zheng, San Jose, CA (US); and Xiaofang Chen, San Jose, CA (US)
Assigned to SK hynix Inc., Icheon-si (KR)
Filed by SK hynix Inc., Icheon-si (KR)
Filed on Feb. 5, 2021, as Appl. No. 17/169,062.
Prior Publication US 2022/0253395 A1, Aug. 11, 2022
Int. Cl. G06F 13/38 (2006.01); H03K 19/173 (2006.01); G06F 13/40 (2006.01)
CPC G06F 13/385 (2013.01) [G06F 13/387 (2013.01); G06F 13/409 (2013.01); H03K 19/1737 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An adaptor device, comprising:
a Universal Serial Bus (USB) connector for coupling to USB signals;
a Joint Test Action Group (JTAG) connector for coupling to JTAG signals;
a plurality of dual-purpose connectors configured for coupling to a corresponding plurality of external devices, each of the plurality of dual-purpose connectors configured for coupling a corresponding external device to both Universal Asynchronous Receiver-Transmitter (UART) signals and JTAG signals;
a USB-to-UART interface circuit coupled to the USB connector and the plurality of dual-purpose connectors, the USB-to-UART interface circuit including a USB hub and a plurality of USB-UART converters; and
a multiplexer circuit coupled to the JTAG connector and the plurality of dual-purpose connectors and configured to couple the JTAG connector to one of the plurality of dual-purpose connectors in response to a selection signal.