USB 2.0 4-Port MTT Hub
Product Brief Rev. 2.0FE12.3
USB 2.0 HIGH SPEED 4-PORT HUB CONTROLLER
Product Brief

full, and low speed Analog Front End (AFE)INTRODUCTION

components on the packaging and testing stages as
Based on world renown and well time-tested FE1.1swell.

design, the FE12.3 provided one extra feature:
Bypass mode. Setting it to BYPASS Mode will

Low power consumption is achieved by using LPM

make upstream port to downstream port 1 conduct as(Link Power Management) feature anda direct line. Its purpose is to allow OTG connection

comprehensive power/clock control mechanism.

between SOC USB HOST and external device

Most part of the chip will not be clocked unlessthrough FE12.3.

needed.

As the FE1.1s, The FE12.3 is a highly integrated,

The FE12.3 could be optionally configured tohigh quality, high performance, low power

support Charging Downstream Ports as defined byconsumption, yet low cost solution for USB 2.0

USB-IF Battery Charging Specification. With thisHigh Speed 4-Port Hub. With its tiny footprint, it isfeature enabled, an USB hub could be easily

the best choice for embedded application.

transformed into a charging station – USB Charging
Hub for Universal Charging Solution compliant

It adopts Multiple Transaction Translator (MTT)

battery based portable devices.

architecture to explore the maximum possible
throughput. Six, instead of two, non-periodictransaction buffers are used to minimize potential

FEATURES
traffic jamming. The whole design is based on statemachine-control to reduce the response delay time;
no micro controller is used in this chip.

Fully compliant with Universal Serial
Bus Specification Revision 2.0 (USB2.0);□Upstream facing port supports
High- Speed (480MHz) and FullSpeed (12MHz) modes;

To guarantee high quality, the whole chip is covered□by Test Scan Chain – even on the high speed

High-Speed (480MHz), Full-Speed(12MHz), and Low-Speed(1.5MHz) modes;(480MHz) modules, so that all the logic components
could be fully tested before shipping. Special BuildIn-Self-Test mode is designed to exercise all high,November 25, 2022

4 downstream facing ports support

Compliant with Universal Charging

Subject to Change Without Notice1USB 2.0 4-Port MTT Hub
Product Brief Rev. 2.0Solution, and USB Battery Charging
Specification 1.1/1.2;
USB Link Power Management (LPM)
support;Integrated USB 2.0 Transceivers;

Integrated upstream 1.5KΩ pull-up,downstream 15KΩ pull-down, andserial resisters;Integrated 3.3V to 1.8V regulator.

Integrated Power-On-Reset circuit;Integrated 12MHz Oscillator with feedback
resister, and crystal load capacitance;Integrated 12MHz-to-480MHz Phase Lock
Loop (PLL);

Integrated Portable Device detection circuitry
for UCS supporting;Multiple Transaction Translators (MTT) –□One TT for each downstream port;□Alternate Interface 0 for Single-TT, andAlternate Interface 1 for Multiple-TT;
Each TT could handle 64 periodic Start-□

Split transactions, 32 periodic
Complete-Split transactions, and 6
none-periodic transactions;

Automatic self-power status monitoring;□

Automatic re-enumeration when SelfPowered switching to Bus-Powered;

Board configured options –□□Support of portable device detection
mechanism for Universal Charging
Solution on downstream ports;
BYPASS Mode select;

Terminus Technology Inc.
5F., No.9, Ln.130, Sec.3, Minsheng E.Rd.,
Songshan Dist., Taipei City, Taiwan
www.terminus.com.tw
November 25, 2022

Subject to Change Without Notice2