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FE1[1].1s


USB 2.0 4-Port Hub

Data Sheet Rev. B0.1


FE1.1S – REVISION B
USB 2.0 HIGH SPEED 4-PORT HUB CONTROLLER


_______________________Data Sheet_______________________

INTRODUCTION

The FE1.1s is a highly integrated, high quality,
high performance, low power consumption, yet
low cost solution for USB 4-Port Hub. It is fully
compliant to “Universal Serial Bus Specification
Revision 2.0”, and supports USB-IF “Battery
Charging Specification Revision 1.1”.

It adopts Single Transaction Translator (STT)
architecture to be more cost effective. Six,
instead of two, non-periodic transaction buffers
are used to minimize potential traffic jamming.
The whole design is based on state-machinecontrol
to reduce the response delay time; no
micro controller is used in this chip.

To guarantee high quality, the whole chip is
covered by Test Scan Chain – even on the high
speed (480MHz) modules, so that all the logic
components could be fully tested before shipping.
Special Build-In-Self-Test mode is designed to
exercise all high, full, and low speed Analog
Front End (AFE) components on the packaging
and testing stages as well.

Low power consumption is achieved by using
advanced technology and comprehensive
power/clock control mechanism.


FE1.1s could be optionally configured to support
Charging Downstream Ports as defined by the
USB-IF Battery Charging Specification. With
this feature enabled, an USB hub could be easily
transformed into a charging station for battery
based portable devices.

FEATURES

.
Fully compliant with Universal Serial Bus
Specification Revision 2.0 (USB 2.0);

Upstream facing port supports High-
Speed (480MHz) and Full-Speed
(12MHz) modes;

4 downstream facing ports support
High-Speed (480MHz), Full-Speed
(12MHz), and Low-Speed (1.5MHz)
modes;
.
Integrated USB 2.0 Transceivers;
.
Integrated upstream 1.5KΩ pull-up,
downstream 15KΩ pull-down, and serial
resisters;
.
Integrated 5V to 3.3V and 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);
April 29, 2009
Subject to Change Without Notice

1


USB 2.0 4-Port Hub

Data Sheet Rev. B0.1

.
Single Transaction Translator (STT) –

One TT for all downstream ports;

The 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 Self-
Powered switching to Bus-Powered;
.
Ganged Power Control and Global Over-
Current Detection support;
.
EEPROM configured options –

Vendor ID, Product ID, & Device
Release Number; and

Number of Downstream Ports;
.
Comprehensive Port Indicators support:

Downstream Port Enabled indicator
LED (x4, Green);

Hub Active/Suspend indicator LED.
.
Supports charging port detection mechanism
on all 4 downstream ports.
April 29, 2009
Subject to Change Without Notice

2


USB 2.0 4-Port Hub

Data Sheet Rev. B0.1

BLOCK DIAGRAM

To Downstream To Upstream
Devices Host/Hub


Over Current

Detection
Power Switch
Control


EEPROM,
Hub Activity
LED
Port
Indicators

Fig. 1: Block Diagram
Upstream
PHY
Routing Switch
Data
Transmit
Data
Recovery &
Elastic
Buffer
USB Multi-port Transceiver Macro Cell
SIE
Downstream
Port
Controllers
Upstream
Port
Controller
Transaction Translator
Full/Low-Speed Handler
Transaction Translator
Hub
High-Speed Handler Hub Controller
Translator Buffer (2KB)
LED
Controller
Unified Transaction
USB 2.0
Controller
Down-
stream
PHY #1
Down-
stream
PHY #2
Down-
stream
PHY #3
Down-
stream
PHY #4
12MHz
Crystal 3.3V & 1.8V Regulator PLL
(x40) OSC POR

April 29, 2009 Subject to Change Without Notice

3


USB 2.0 4-Port Hub

Data Sheet Rev. B0.1

PACKAGE

28-pin SSOP
(Body Size: 10x4 mm, Pitch: 0.64 mm)


PIN ASSIGNMENT

VSS
XOUT
XIN
DM4
DP4
DM3
DP3
DM2
DP2
DM1
DP1
VD18
VD33
REXT

FE1.1s
Rev. B
1
13
12
15 14
11
10
9
8
7
6
5
4
2
3
16
17
18
19
20
21
22
23
24
25
26
27
28
VD18
TESTJ
OVCJ
PWRJ
LED2
LED1
DRV
VD33_O
VDD5
BUSJ
VBUSM
XRSTJ
DPU
DMU

Fig. 2: SSOP-28 Pin Assignment


April 29, 2009 Subject to Change Without Notice

4


USB 2.0 4-Port Hub

Data Sheet Rev. B0.1

PIN DESCRIPTION TABLE


Pin Name Pin No Type


VSS 1 P
XOUT 2 OSC
XIN 3 OSC
DM4 4 UT
DP4 5 UT
DM3 6 UT
DP3 7 UT
DM2 8 UT
DP2 9 UT
DM1 10 UT
DP1 11 UT
VD18 12, 28 P
VD33 13 P
REXT 14

DMU 15 UT
DPU 16 UT
XRSTJ 17 I

VBUSM 18 I

BUSJ 19 I

VDD5 20 P
VD33_O 21 P

Function Note

Ground.
12 MHz Crystal Oscillator output 1
12 MHz Crystal Oscillator input. 1
The D-pin of the 4th Downstream Facing Port.
The D+ pin of the 4th Downstream Facing Port.
The D-pin of the 3rd Downstream Facing Port.
The D+ pin of the 3rd Downstream Facing Port.
The D-pin of the 2nd Downstream Facing Port.
The D+ pin of the 2nd Downstream Facing Port.
The D-pin of the 1st Downstream Facing Port.
The D+ pin of the 1st Downstream Facing Port.
1.8V power output
3.3V power input for 3.3V→1.8V integrated regulator.
External Bias Resisters:


A 2.7KΩ (± 1%) resister should be connected to VSS to provide internal
bias reference.
The D-pin of the Upstream Facing Port.


The D+ pin of the Upstream Facing Port.
External Reset:
active low, is an optional source of chip reset signal. The minimum low
pulse width is 10 μs. In normal applications, there is no need for this
signal, and should be tied to high.


Upstream Port Power Monitor:
This pin monitors the power state of VBUS from upstream facing port.
High level indicates that the host is powered up and the hub should
function normally. Low level indicates that the host is powered down,
and the hub should be in power-down state.


Bus Power Sense:
This pin identify the primary power source of the hub. High level
indicates the hub is Self-Powered and has enough strength to support
High-Power devices on its downstream ports. Otherwise, it is Bus-
Powered and each downstream ports are presumed to supply 100mA of
power only.


5V power input for integrated 5V→3.3V regulator.
3.3V power output from 5V→3.3V integrated regulator – a 10μF
decoupling capacitor is required.


April 29, 2009 Subject to Change Without Notice

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USB 2.0 4-Port Hub

Data Sheet Rev. B0.1

DRV/ 22
CHRGEN

LED1/ 23
EESCL

LED2/ 24
JLEDEN

PWRJ 25

OVCJ 26

TESTJ/ 27
EESDA

I/O

I/O

I/O

OD

I

OD-PU

LED Drive Control/Charging Hub Enable
During power-on-reset, this pin is used as Charging Hub Enable. If it is
tied to high, the battery charging function will be enabled. Otherwise, it
is a normal hub and this pin functions as LED driving control pin.

LED Control 1/External EEPROM Clock
Port 1 and Port 3 device connected indicator (LED) control; or, when
LED2 is tied to high during power-on-reset, it is the joint indicator for all
ports. At the same time, it could also be used as the clock (SCL) of
external EEPROM.

LED Control 2/Joint LED Indicator Enable
Port 2 and Port 4 device connected indicator (LED) control. During
power-on-reset, it is a configuration input for enabling Joint Port Indicator
by tying to 3.3V.

Power Enable
This is an active low, open-drain output signal for controlling power to the
downstream devices in Ganged Power Switching mode. It is enabled and
disabled by the host hub driver to reduce the in-rush current or in
response to Over-Current Detection.

Over Current Sense
Active low input from external current monitor indicating over-current
condition for Global Over-Current Protection.

Test Mode Enable/External EEPROM Serial Data
Active low, open drain signal with internal pull-up resistor. When tied to
low during power-on-reset, the chip will be set in test mode. The test
mode is for factory test only, for all applications, this pin should be either
left as No-Connection or connected to the Serial Data/Address (SDA) pin
of external 2-wire EEPROM.

Type Abbreviation –


I : Schmitt Trigger Input, 3.3V 5V-Tolerant;
O: Output (driving strength: 8mA);
OD: Output, Open Drain (sink current: 4 mA);
OD-PU: 3.3V Input/Output, Open Drain with Internal Pull-Up (sink current: 4 mA)
I-PU: 3.3V Input with Internal Pull-Up;
UTD: USB Downstream Facing Port Transceiver (supporting High/Full/Low Speed).
UTU: USB Upstream Facing Port Transceiver (supporting High/Full Speed).
OSC: Crystal Oscillator (with integrated feedback resister, and crystal load capacitor).
P: Power/Ground.
Note 1 – Crystal Requirements

.
Frequency accuracy: 12MHz ± 50ppm
.
Load capacitance: 16pF ~ 20pF
April 29, 2009 Subject to Change Without Notice

6


USB 2.0 4-Port Hub
Data Sheet Rev. B0.1
APPLICATION ALTERNATIVES
The FE1.1s can be configured through board design options in one of three modes – Individual Port
Active Indicator mode, Joint Port Active Indicator mode, and USB Battery Charging Hub more. Each
mode could incorporate an optional external serial EEPROM for customizing Vendor ID, Product ID,
Device Release Number, and number of ports. The detailed layout of EEPROM contents is explained in
the following section.
All these options are implemented through four pins of FE1.1s: DRV, LED1, LED2, and TEST.
Individual Port Active Indicator Mode
In this mode, as shown by Fig. 3, FE1.1s supports up to 5 LED's. There is one green LED for each
downstream port and one red LED for hub active/suspend indication. The green light turns on
whenever a device properly attached to its corresponding port, and turns off when it is disconnected or
the bus is suspended. The red light turns on when the hub is configured by the USB host, and turns off
when it is detached from the host or switch into suspend mode. All LED's are optional and could be
safely omitted without any special measures. The external serial EEPROM is optionally hooked on
TESTJ and LED1.
April 29, 2009 Subject to Change Without Notice 7
Fig. 3: LED and EEPROM Connections
Green
Green
Green
Green
LED1
TESTJ
LED2
DRV
FE1.1s
Port 1 Indicator
RedHub Active/Suspend Indicator
Port 3 Indicator
Port 2 Indicator
Port 4 Indicator
SDA
SCL
A0
A1
A2 EEPROM
USB 2.0 4-Port Hub
Data Sheet Rev. B0.1
APPLICATION ALTERNATIVES
The FE1.1s can be configured through board design options in one of three modes – Individual Port
Active Indicator mode, Joint Port Active Indicator mode, and USB Battery Charging Hub more. Each
mode could incorporate an optional external serial EEPROM for customizing Vendor ID, Product ID,
Device Release Number, and number of ports. The detailed layout of EEPROM contents is explained in
the following section.
All these options are implemented through four pins of FE1.1s: DRV, LED1, LED2, and TEST.
Individual Port Active Indicator Mode
In this mode, as shown by Fig. 3, FE1.1s supports up to 5 LED's. There is one green LED for each
downstream port and one red LED for hub active/suspend indication. The green light turns on
whenever a device properly attached to its corresponding port, and turns off when it is disconnected or
the bus is suspended. The red light turns on when the hub is configured by the USB host, and turns off
when it is detached from the host or switch into suspend mode. All LED's are optional and could be
safely omitted without any special measures. The external serial EEPROM is optionally hooked on
TESTJ and LED1.
April 29, 2009 Subject to Change Without Notice 7
Fig. 3: LED and EEPROM Connections
Green
Green
Green
Green
LED1
TESTJ
LED2
DRV
FE1.1s
Port 1 Indicator
RedHub Active/Suspend Indicator
Port 3 Indicator
Port 2 Indicator
Port 4 Indicator
SDA
SCL
A0
A1
A2 EEPROM

USB 2.0 4-Port Hub

Data Sheet Rev. B0.1

Joint Port Active Indicator Mode

The four downstream port active indicators can be joint into one single LED, as depicted in Fig. 4, by
tying LED2 to 3.3V. In this mode, the Joint Port Indicator will turn on whenever there is at least one
device attached to any one of the four downstream ports. The behavior of the Hub Active/Suspend
Indicator and the external serial EEPROM are remained unchanged.

LED1
FE1.1s
TESTJ
LED2
DRV
SDA
SCL
A0
A1
A2 EEPROM
Joint Port Indicator
3.3V
Green
RedHub Active/Suspend Indicator (Optional)
Fig. 4: Joint Port Active Indicator

USB Battery Charging Hub

The FE1.1s Revision B could be optionally configured to support USB Battery Charging Specification

1.1 and provides the core control logic for USB Charging Hub. In this mode, the hub will be ready to
respond to the charging request from portable devices no matter whether it is not connected to the host,
the host being powered down, in normal operation, or in suspend. In other words, as long as the hub
itself is properly powered, the charging function is independent of the status of the upstream port or the
host controller.
April 29, 2009 Subject to Change Without Notice

8


USB 2.0 4-Port Hub

Data Sheet Rev. B0.1

3.3V

Green
Joint Port Indicator


SDA
SCL
A0
A1
A2 EEPROM
Blue
Charging Indicator
TESTJ
LED1


FE1.1s

LED2
DRV


Fig. 5: USB Charging Hub

Figure 4 demonstrates this configuration. The DRV pin is tied to 3.3V to set FE1.1 into USB Charging
Hub mode. The LED2 will then be the Charging Indicator which turns on the LED when a successful
charging request handshake between the hub and the portable device completed. The LED1 is the Joint
Port Indicator which turns on the LED when at least one device connected successfully on any of the
downstream ports. An external Serial EEPROM could be optionally hooked on LED1 and TESTJ to
provide alternate PID, VID, etc.

April 29, 2009 Subject to Change Without Notice


USB 2.0 4-Port Hub

Data Sheet Rev. B0.1

EEPROM CONTENTS

Address Contents
0x00 0x40
0x01 0x1A
0x02 Vendor ID (Low)
0x03 Vendor ID (High)
0x04 Product ID (Low)
0x05 Product ID (High)
0x06 Device Release (Low)

0x07 Device Release (High)

0x08 ~ Filling
0x19
0x1A Port Number

0x1B ~ Filling
0x1E

0x1F Check Sum

Note
Constant, low byte of check code
Constant, high byte of check code
Low byte of Vendor ID, idVendor field of Standard Device Descriptor
High byte of Vendor ID
Low byte of Product ID, idProduct field of Standard Device Descriptor
High Byte of Product ID
Low byte of Device Release Number, must be Binary Coded Decimal,

bcdDevice field of Standard Device Descriptor
High byte of Device Release Number, must be Binary Coded Decimal
All 0x00

Number of Downstream Ports, bNbrPorts field of Hub Descriptor.

All 0x00

The 8-bit sum of all value from 0x00 to 0x1E.

The first two bytes are the check code from the existence of EEPROM, their value must be 0x1A40.
Any other value would cause the EEPROM loading mechanism of FE1.1s to conclude that the contents
of this EEPROM is unusable, and use the default value instead.

The last byte, 0x1F, is a checksum made up of the sum of all value from 0x00 to 0x1E. The number
must match to render the content of the EEPROM usable. Otherwise, the loading mechanism of FE1.1s
would discard the value from EEPROM and use default value instead.

April 29, 2009 Subject to Change Without Notice

10


USB 2.0 4-Port Hub

Data Sheet Rev. B0.1

ELECTRICAL CHARACTERISTICS

ABSOLUTE MAXIMUM RATINGS

Parameter
Storage Temperature
Power Supply Voltage

ESD Human Body Mode
ESD Machine Mode
ESD Charged Device Mode
Latch Up

RECOMMENDED OPERATING RANGES

Symbol
TS
VDD5
VD33

Min.
-55

-0.5
-0.5
-2000
-200
-500
-200

Max. Unit
+150 ℃


+6.0 V
+4.0
2000 V
200 V
500 V
200 mA

Parameter
Operating temperature
Operating voltage

LOW level voltage of digital input
HIGH level voltage of digital input
Threshold voltage of digital input
Low-to-High level of schmitt-trigger input
High-to-Low level of schmitt-trigger input
LOW level voltage of digital output@4mA
HIGH level voltage of digital output@4mA
XIN input capacitance
Internal Pull-Up Resister Range

Symbol
TA
VDD5
VD33

VIL
VIH
VTH
VT+
VTVOL
VOH
Cin

RPU

Min.
0

4.5

3.0
-0.3
2.0

1.45

1.44

0.89

2.4

39

Typ. Max. Unit
70 ℃


5.0 5.5 V
3.3 3.6
0.8 V
5.5 V
1.58 1.74 V
1.5 1.56 V
0.94 0.99 V
0.4 V
V
32 pF
65 116 KΩ

April 29, 2009 Subject to Change Without Notice

11


USB 2.0 4-Port Hub

Data Sheet Rev. B0.1

POWER CONSUMPTION

DC SUPPLY CURRENT

Symbol

Active ports

I_suspend

Condition Typ. Unit
Host Device
Suspend 800 uA

I_suspend_cm Suspend in Charging Mode 1300 uA


Icc


4
Full-Speed
High-Speed
4x Full-Speed
4x High-Speed
28
84
mA
mA
High-Speed 4x Full-Speed 41 mA
3 Full-Speed 3x Full-Speed 28 mA
High-Speed 3x High-Speed 73 mA
High-Speed 3x Full-Speed 41 mA
Full-Speed 2x Full-Speed 28 mA
2 High-Speed 2x High-Speed 62 mA
High-Speed 2x Full-Speed 41 mA
Full-Speed 1x Full-Speed 28 mA
1 High-Speed 1x High-Speed 51 mA
High-Speed 1x Full-Speed 41 mA
No active
Full-Speed
High-Speed
28
40
mA
mA

Note: The power consumption is measured when the bus is in IDLE state – there is no activities other
than the Start-Of-Frame (SOF) and INTERRUPT-IN packets for the hub itself on the bus. The peak
power consumption varies depending upon the system configuration, type of operations, and over-all
bus utilization.

April 29, 2009 Subject to Change Without Notice

12


USB 2.0 4-Port Hub

Data Sheet Rev. B0.1

PACKAGE

28-pin SSOP (Body Size: 10x4 mm, Pitch: 0.64mm)


TERMINUS TECHNOLOGY INC.
1052, 10F, NO. 3-2, YUANQU ST. NANGANG
TAIPEI, TAIWAN, ROC

April 29, 2009 Subject to Change Without Notice

13



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