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Diodes Incorporated PI2DPT1021 10Gbps Bi-Directional Retimer is a bit-level retimer with receiver adaptive CTLE and transmitter 3-tap equalization, which can compensate channel loss up to -23dB for 5GHz signal transmission. It supports DP 1.4 and USB 3.2 standards for USB Type-C™ DP ALT mode operation. The operation configurations are programmable via I2C interface to select 4-lane DP, 2-lane DP/1 lane USB 3.2 Gen1x1/Gen2x1, 1/2 lane USB 3.2 Gen1x1/Gen2x1 or USB 3.2 Gen2x2.
This device uses the common 1.8V Vdd power supply to achieve good power-saving management. It complies with USB link power management states for active mode (U0) and power saving mode (U1, U2, U3). USB Rx detection monitors the plug condition of the TX terminals continuously. The LFPS signal detector detects the LBPM (LFPS Based on PWM Message) of USB mode.
Under Displayport operation, the AUX Listener will monitor the AUX communication for data rate, lane count, swing and pre-emphasis setting, and power saving D3 mode setting. The SINK side HPD connection signal is set via the I2C register by the system PD controller. The integrated AUX/SBU switch automatically maps the Displayport AUX+/- pins to the Type-C SBU1/SBU2 pins.
The bi-directional design provides flexibility if the DFP and UFP signal flow is swapped. It is a convenient setting on the fly for active cable applications, or it can give more layout options for signal flow selection. With the merit of the bit-level retimer design, the Diodes Incorporated PI2DPT1021 has very low latency from signal input to output (< 1ns) that serves good interoperability among various USB and DP devices.
