Chapter 3

Hardware

Ethernet Port Interface

The Ethernet solution is provided by integrating the functions of I/O Hub (82801FBM) and the Intel 82562GZ Fast Ethernet PCI controller chip together. The Intel 82562GZ chip provides the physical layer (PHY) and the I/O Hub provides the Media Access Controller (MAC).

Routed to J4 connector

Supports full duplex or half-duplex operation

Supports full duplex operation at 10 Mbps and 100 Mbps

Provides IEEE 802.3 10BaseT/100BaseT compatible physical layer and LAN connect interface

Supports IEEE 802.3u Auto-Negotiation

Supports IEEE 802.3x 100BASE-TX flow control

Provides 10Base-T auto-polarity correction

Provides PHY detection of polarity, MDI-X, and cable lengths

Supports Auto MDI, MDIX crossover at all speeds

Provides Digital Adaptive Equalization control

Provides Link Status interrupt capability and XOR tree mode support

Supports 3-port LEDs (speed, link, and activity)

Supports diagnostic loopback mode

Provides low power at 3.3 V (less than 300 mW in active transmit mode)

Reduced power in "unplugged mode" (less than 50 mW)

Provides automatic detection of "unplugged mode"

Baseboard must provide the Ethernet RJ-45 connector and the magnetics

Table 3-25. Simplified Ethernet Port Pin/Signal Descriptions (J4)

J4

Signal

Description

Pin #

 

 

97

TX+

Analog Twisted Pair Ethernet Transmit Differential Pair – These pins

 

 

transmit the serial bit stream to the baseboard as differential signals.

95

TX-

 

 

 

 

93

RX

Analog Twisted Pair Ethernet Receive Differential Pair – These pins

 

 

receive the serial bit stream from the baseboard as differential signals.

91

RX-

 

 

 

 

 

GND

Ground

10

LILED

Link Integrity LED – The LINK LED pin indicates link integrity. If the

 

 

link is valid in either 10 or 100 Mbps, the LED is on; if the link is

 

 

invalid, the LED is off.

12

ACTLED

Activity LED – The Activity LED pin indicates either transmit or receive

 

 

activity. When activity is present, the activity LED is on; when no

 

 

activity is present, the activity LED is off.

14

SPDLED

Speed LED – The speed LED pin indicates the speed. The speed LED

 

 

will be on at 100 Mbps and off at 10 Mbps.

Note: The shaded area denotes power or ground.

48

Reference Manual

XTX 820

Page 54
Image 54
Ampro Corporation XTX 820 manual Ethernet Port Interface, Tx+, Liled, Actled, Spdled

XTX 820 specifications

Ampro Corporation has made a significant mark in the world of embedded systems with its versatile XTX 820 embedded computing module. The XTX 820 is designed to cater to a wide array of applications, ranging from industrial automation to medical devices, providing developers with a powerful yet compact solution.

One of the standout features of the XTX 820 is its advanced processing capabilities. The module is equipped with an Intel Atom processor, which delivers impressive performance while operating at low power levels. This combination makes the XTX 820 suitable for environments where energy efficiency is essential. The Atom processor allows for seamless multitasking and support for demanding applications without compromising on thermal efficiency.

In terms of memory, the XTX 820 supports a range of configurations, accommodating both DDR2 and DDR3 memory types. With a maximum of up to 4GB of onboard memory, this module ensures that applications can run smoothly and efficiently across various tasks. The flexibility in memory options enables developers to tailor their designs according to specific project needs.

Connectivity is another strong suit of the XTX 820. The module comes with multiple I/O interfaces that enhance its utility in various applications. It features USB, Serial, and Parallel ports, along with support for LVDS display and audio interfaces. This diverse range of connectivity options allows the XTX 820 to integrate easily with a variety of systems and devices, facilitating seamless data transfer and communication.

Security is increasingly critical in embedded systems, and Ampro has integrated robust security features into the XTX 820. This includes support for hardware-based security solutions, which can protect sensitive data and prevent unauthorized access. Such characteristics make the module a suitable choice for industries where data integrity is paramount.

Furthermore, the XTX 820 boasts an impressive range of environmental operating conditions. It is designed to function in extreme temperatures, making it suitable for outdoor and industrial applications where fluctuations in temperature can be a concern.

In conclusion, the Ampro Corporation XTX 820 embedded computing module emerges as a versatile platform that combines performance, memory flexibility, robust connectivity, and enhanced security features. Its design is tailored to meet the demands of various industries, making it a reliable choice for developers looking for advanced embedded solutions.