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Technical Manual
LILED
The Link Integrity LED pin indicates link integrity. If the link is valid in either 10 or 100 Mbps, the LED is
on; if link is invalid, the LED is off.
SPEEDLED
The Speed LED pin indicates the speed. The speed LED will be on at 100 Mbps and off at 10 Mbps.
USB0+, USB0-
Universal Serial Bus Port 0. These are the serial data pairs for USB Port 0.
USB1+, USB1-
Universal Serial Bus Port 1. These are the serial data pairs for USB Port 1.
USB2+, USB2-
Universal Serial Bus Port 2. These are the serial data pairs for USB Port 2.
OVRCUR#
Over Current Detect Input. This pin is used to monitor the USB power over current. Max. input voltage is
3.3 VDC.
USBEN
This output enables the USB ports. This pin is used to enable the USB power switch.
PWRBTN#
Power Button Input. This input is used to support the ACPI power button function. Used to power up or
down the board and to resume from suspend mode. Max. input voltage is 3.3 VDC.
PWR_LED#
The LED# pin indicates the power status of the board. The LED# pin is an open collector output and will
sink current to the connected LED if the device is active, will blink in suspend mode or will be inactive if
the device is switched off.
MRESET#
The Manual Reset Input Pin. Short to ground will reset the device. Max. input voltage is 3.3 VDC.
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Page 20 of 71 Pages
Version 1.04
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