USB 2.0 7-Port Hub

Data Sheet Rev. 1.01

CONFIGURABLE OPTIONS

The FE2.1 is a highly versatile design that can be configured to meet many varieties of implementation

requirement in a rather easy way. The behavior of FE2.1 can be configured by either board design

selected options or through contents of external EEPROM.

LED Indicators, Number of Downstream Facing Port, and Non-Removable Devices

According to USB 2.0 Specification, the status of each downstream port is shown by two LED

indicators – the Green and Amber LED. FE2.1 supports the full function as specified by DRV and

LED[7:1] pins. Figure 4 shows how these port status indicators be connected, together with the external

EEPROM and the Hub Active Indicator (the Red LED).

The optional Hub Active Indicator is only turned on when the hub is configured by the host, and turned

off when the hub is either set into suspend mode, disconnected, or powered off by the host. Any of

these fifteen LED's could be removed without effecting the normal function of the hub.

Jul. 16, 2009

Subject to Change Without Notice

9

Fig. 4: LED and EEPROM Connections

TESTJ

DRV

FE2.1

Hub Active Indicator

SDA

SCL

A0

A1

A2

EEPROM

LED[1]

LED[2]

Port 1 Indicators

Green

Amber

Port 2 Indicators

Green

Amber

LED[3]

LED[4]

Port 3 Indicators

Green

Amber

Port 4 Indicators

Green

Amber

LED[5]

LED[6]

Port 5 Indicators

Green

Amber

Port 6 Indicators

Green

Amber

LED[7]

Port 7 Indicators

Green

Amber