ReDriver with integrated USB-C detector restores signal integrity

03-04-2020 | Diodes Inc | Semiconductors

Diodes Incorporated has released the PI3EQX10612/PI3EQX10312 2-port 10Gbps linear ReDriver devices with integrated USB-C detection for equipment implementing a USB Type-C interface. Providing 1:2/2:1 mux/demux functionality, the ReDrivers can be employed to increase the reach of USB signals running over rigid or flexible PCBs in gaming consoles, desktop computers, laptops, tablets, and other consumer applications.

As the speed of serial buses continues to rise, overcoming signal integrity issues and transmission losses needs the usage of ReDrivers and retimers/repeaters. While retimers commonly terminate a signal prior to retransmitting it, which may introduce significant latency, the ReDrivers are created to amplify the signal while functioning at the same speed as the bus. The increased drive this gives can enable the serial bus to travel over particularly longer PCB traces with no loss of signal. Every dB of channel loss compensation given equates to a measurable increase in PCB track length.

The devices are fully compliant with the USB 3.2 Gen 2 and Gen 1 Super Speed standards. They give adjustable linear equalisation, output swing, and flat gain to lessen intersymbol interference with an automatic slumber mode that allows adaptive power management. The ReDrivers employ pre-emphasis at the transmission point to help compensate for channel losses, producing high reliability and low bit error rate at the receiver. Control is accomplished, employing an I2C interface or pin control. The PI3EQX10312 provides further features including plug-in detection for USB-C connector and Vconn to power active cables.

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