US 12,229,071 B2
eUSB repeater for passing repeating mode packets between a differential bus and a single-ended bus
Kenneth Jaramillo, Gilbert, AZ (US); and Bart Vertenten, Merelbeke (BE)
Assigned to NXP USA, Inc., Austin, TX (US)
Filed by NXP USA, Inc., Austin, TX (US)
Filed on Dec. 1, 2022, as Appl. No. 18/073,507.
Prior Publication US 2024/0184730 A1, Jun. 6, 2024
Int. Cl. G06F 13/42 (2006.01)
CPC G06F 13/42 (2013.01) 23 Claims
OG exemplary drawing
 
1. A differential to single-ended signal repeater comprising:
wherein the repeater is a USB compliant repeater configured to operate in a repeating mode;
an analog differential receiver configured to operate in the repeating mode and receive a differential data signal from a USB compliant differential data bus, having two lines, at a receiver output driver and configured to drive an internal data signal on an internal data line from the receiver output driver in response to the received differential data signal;
an analog single-ended transmitter configured to operate in the repeating mode and receive the internal data signal from the internal data line at a transmitter output driver and configured to drive the single-ended data signal from the transmitter output driver on a USB compliant single-ended data bus; and
an enable control circuit configured to enable the analog single-ended transmitter using a data line enable signal, the enable control circuit receiving a digital state transition from the differential data bus and generating the data line enable signal in response thereto;
wherein the enable control circuit includes an enable flip-flop configured to generate the data line enable signal in response to a start of receiving a Full Speed packet on the differential data bus.