1 General description

PTN3222 is a 1-port eUSB2 to USB2 redriver IC that performs translation between eUSB2 and USB2 signaling schemes. It is meant to be used in systems that have eUSB2 interface on one side and USB2 interface on the other side. It supports host repeater, device repeater or dual role repeater function. PTN3222 implements Repeater mode (eUSB2 to USB2 redriver) and it supports Link Power management features. PTN3222 is targeted to be USB2 compliant and eUSB2 conformant. It supports all three speeds/data rates: Low Speed (1.5 Mbps), Full Speed (12 Mbps) and High Speed (480 Mbps). PTN3222 provides a target I2C register interface to initialize the required functionality and features as per the platform application need. The I2C target address is selectable using a quaternary input pin (that selects one of the four addresses). The RST_N pin is used to reset the IC without power cycling. It is powered by two power supplies (VDD3V3, VDD1V8) and is available in a small thin WLCSP12 package (1.55 mm x 1.18 mm x 0.455 mm body, 0.35 mm pitch) and QFN12 package (1.75 mm x 2.2 mm and 0.4 mm pitch).

2 Features and benefits

• 1-port eUSB2 to USB2 redriver functionality

• Conforms to USB2 specification along with relevant ECNs

• Conforms to eUSB2 specification v1.1

• Supports host only repeater, device only repeater and dual mode repeater role

• Supports all USB2.0 data rates

– Low speed operation (1.5 Mbps)

– Full speed operation (12 Mbps)

– High speed operation (480 Mbps)

• Supports RAP accesses for a select set of register accesses

• Integrated and selectable pullup and pulldown resistors on both eUSB2 and USB2 ends

• Signal Integrity (SI) configurability

– eUSB2 – Tx de-emphasis, Rx equalization, Rx squelch threshold, Tx output swing

– USB2 – HS disconnect detection threshold, Rx squelch threshold, Rx termination, Rx equalization, Tx deemphasis,

Tx slew rate, Tx output swing

• Supports BC1.2 power provider CDP configuration capability in host mode

• Low current consumption

– Supports eUSB2 and USB2 power management

– Implements Deep standby mode for lowest power consumption

• Robustness features

– USB2 data pins tolerate 5.5 V (DC) for 24 hours

– USB2 data pins withstand short to GND for 24 hours

– USB2 data pins withstand collision on DP/DN pins due to faulty USB devices

• GPIOs and high speed data pins are backpower safe

• I2C target interface supports standard mode, fast mode and fast mode plus

• Power supplies - VDD3V3, VDD1V8

• ESD HBM 2 kV CDM 500 V

• Operating ambient temperature range -40 °C to +85 °C

• Available in WLCSP12 and QFN12 package

3 Applications

• eUSB2 to USB2 repeater function in platforms (e.g. hosts, devices, hubs, routers, protocol bridges, etc.) with

Standard A/ Standard B/ Micro-B/USB Type-C connector scenarios

– Host only repeater

– Device only repeater

– Dual role repeater (as determined dynamically in the application)