DC-ME-Y402-LX Digi International, DC-ME-Y402-LX Datasheet - Page 35

• Manufacturer Part Number: DC-ME-Y402-LX
• Description: ME 9210 8MB RAM 4MB FLASH LINUX
• Manufacturer: Digi International
• Type: Network Controller & Processorr

Specifications of DC-ME-Y402-LX

• Module/board Type: Device Server
• Data Rate: 10 Mbps to 100 Mbps
• Memory Type: SDRAM
• Interface Type: Ethernet
• Operating Voltage: 3.3 V
• Operating Current: 346 mA
• Maximum Power Dissipation: 825 mW
• Operating Temperature Range: - 40 C to + 80 C
• Board Size: 36.7 mm x 19.05 mm
• Data Bus Width: 32 bit
• Modulation: CCK, DBPSK, DQPSK
• Product: Modules
• Security: 64/128 bit WEP, TKIP, WPA, WPA2
• For Use With/related Products: Networking
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

General Information
Hard Reset
35
LEDs
Reset
      
The embedded modules have two types of LEDs:


The development kit, by default, correctly configures the GPIO connected to the LED as an
output and then uses this LED to represent Ethernet activity.
The embedded module supports a hardware reset via pin 14 of the 20-pin header. The unit
is forced into a hard reset when pulling the pin to ground, or less than 0.8v, for one
microsecond. When plugged into a development board, this pin is wired to the push button
at SW4. As a result, this switch acts as a hard reset button.
An LED connected directly to GPIO pins on the processor and controlled
directly in software
An LED connected to other hardware components (normally the Ethernet
hardware) and not directly programmable by the operating system
Yellow
LED
Green
This software-programmable LED is wired to processor GPIO register bit C6/
Characteristic
This is wired directly to Ethernet hardware and provides an indication of link.
GPIO[14] and is wired to be lit when low. The default behavior is to blink on
High Inactive Threshold
Low ActiveThreshold
Minimum Hold Time
Rise Time
Delay
Reset Characteristics
Specification
Ethernet activity.
Description
250 milliseconds (typical)
100 microseconds max
1 microsecond pulse
0.8 V
2.4V