Chapter 3

Hardware

J3

Pin #

Signal

Description

Pin #

DB9

 

 

75

8

CTS2*

Clear To Send 2 – Indicates external serial device is ready to receive data.

 

 

 

Used as hardware handshake with RTS2 for low level flow control.

69

4

DTR2*

Data Terminal Ready 2 – Indicates Serial port 1 is powered, initialized, and

 

 

 

ready. Used as hardware handshake with DSR2 for overall readiness.

79

9

RI2*

Ring Indicator 2 – Indicates external serial device is detecting a ring

 

 

 

condition. Used by software to initiate operations to answer and open the

 

 

 

communications channel.

19

5

GND

Ground

20

NC

NC

Not connected

 

 

 

 

Notes: The shaded area denotes power or ground. The signals marked with * = Negative true logic.

Infrared (IrDA) Port

The Infrared Data Association (IrDA) port provides a two-way wireless communications port using infrared as a transmission medium at the basic level. There are two basic infrared implementations provided; the Hewlett-Packard Serial Infrared (HPSIR) and the Amplitude Shift Keyed Infrared (ASKIR) methods. HPSIR is a serial implementation of infrared developed by Hewlett-Packard. The IrDA (HPSIR and ASKIR) signals share Serial Port 2 with the modem and RS232 functions on the port. This port can be enabled/disabled and configured for HPSIR or ASKIR signals in the BIOS Setup Utility. Refer to Chapter 4, BIOS Setup Utility for more information.

The HPSIR method allows serial communication at baud rates up to 115k baud. Each word is sent serially beginning with a zero value start bit. A zero is sent when a single infrared pulse is sent at the beginning of the serial bit time. A one is sent when no infrared pulse is sent during the bit time.

The Amplitude Shift Keyed infrared (ASKIR) allows serial communication at baud rates up to 19.2k baud. Each word is sent serially beginning with a zero value start bit. A zero is sent when a 500 kHz waveform is sent for the duration of the serial bit time. A one is sent when no transmission is sent during the serial bit time.

Both of these methods require an understanding of the timing diagrams provided in the Super I/O controller chip (W83627HG) specifications available from the manufacture’s web site and referenced earlier in this manual. For more information, refer to the Winbond Electronics, Corp. chip specifications and the Infrared Data Association web site at http://www.irda.org.

NOTE

For infrared applications not covered in this brief description, refer to the

 

83627HG chip specifications by Winbond Electronics, Corp.

 

 

PS/2 Keyboard

The signal lines for a PS/2 keyboard are provided through the J3 connector from the Super I/O (W83627HG). Refer to Table 3-19 for the Simplified PS/2 Keyboard Pin/Signal Descriptions.

PS/2 Mouse

The signal lines for a PS/2 mouse are provided through the J3 connector from the Super I/O (W83627HG). Refer to Table 3-19 for the Simplified PS/2 Mouse Pin/Signal Descriptions.

38

Reference Manual

XTX 820

Page 44
Image 44
Ampro Corporation XTX 820 manual Infrared IrDA Port, PS/2 Keyboard, PS/2 Mouse, CTS2, DTR2

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.