Advantech SOM 144 Guide

SOM 144

System-on-Module

Design Specification Rev. 1.0

This document is copyrighted 2001 by Advantech Co. Ltd. All rights

are reserved. Advantech Co., Ltd. reserves the right to make improve-

ments to the products described in this manual at any time without

notice.

No part of this manual may be reproduced, copied, translated or

transmitted in any form or by any means without the prior written

permission of Advantech. Information provided in this manual is

intended to be accurate and reliable. However, Advantech assumes no

responsibility for its use, nor for any infringements upon the rights of

third parties which may result from its use.

All brand and product names mentioned herein are trademarks or

registered trademarks of their respective holders.

Acknowledgments

SOM 144 is a trademark of Advantech Co., Ltd. IBM, PC/AT, and PS/

2 are trademarks of International Business Machines Corporation. MS-

DOS and Windows CE are trademarks of Microsoft Corporation. All

other brand and product names mentioned herein are trademarks or

registered trademarks of their respective holders.

Part No. 2006014410 1st Edition

Printed in Taiwan June 2001

History

The SOM 144 specification and design guide has gone through

revisions since its inception. To keep user’s current with the latest

version of the Advantech SOM 144 specifications and designs, this

page lists the most recently printed revision of the SOM 144 specifica-

tion and design guide. This revision history corresponds with the

revision on the SOM 144 specifications and designs. The guide prints

are ordered from oldest to newest.

Specification and Design Guide

Document No. Date Rev. Changes Items

2006014410 31 May 2001 1.0 Initiation of SOM 144/

PCI Design Specifica

tion

Contents

Chapter 1 General Information 1

1.1 Overviewview ................................................................... 2

Chapter 2 Connector Assignments and Descriptions 3

2.1 144-pin SODIMM (PCI/IDE/ Serial port /USB/AC97/ .

KB/Mouse) ....................................................................... 4

2.2 Recommended 80-pin Front-end Connector (VGA/.....

Ethernet/IrDA/Printer/FDD/ATX) ................................. 6

Chapter 3 Signal Description 7

3.1 144 pin SODIMM (PCI/IDE/ Serial port /USB/AC97/ ..

KB/Mouse) ....................................................................... 8

3.1.1 PCI ............................................................................. 8

3.1.2 IDE .............................................................................9

3.1.3 Serial Ports ............................................................... 11

3.1.4 USB .......................................................................... 11

3.1.5 AC97 ........................................................................ 12

3.1.6 PS/2 Keyboard/Mouse ............................................. 12

3.1.7 Miscellaneous ........................................................... 13

3.2 Recommended front-end 80pin board to board con ......

nector (VGA/Ethernet/IrDA/Printer/FDD/ATX) ....... 13

3.2.1 VGA ......................................................................... 13

3.2.2 Ethernet ................................................................... 14

3.2.3 IrDA ......................................................................... 15

3.2.4 LPT/FDD ................................................................. 15

3.2.5 Miscellaneous ........................................................... 17

Chapter 4 Mechanical Characteristics 19

4.1 Mechanical Characteristics .......................................... 20

4.1.1 Dimensions of SOM 144 Module ............................. 20

4.1.2 SOM 144 Solution Board Layout ............................ 21

4.1.4 SODIMM Layout ..................................................... 22

4.1.3 Recommand Component Suppliers .......................... 22

4.1.5 SOM 144 Module Installation ................................... 23

4.1.6 SOM 144 Module Removal ...................................... 24

Chapter 5 Electrical Characteristics 27

5.1 PCI Bus ........................................................................... 28

5.1.1 IDSEL mapping ........................................................ 28

5.1.2 Interrupt-Routing ...................................................... 28

5.1.3 Onboard resources ................................................... 28

5.2 Power supply definition ................................................. 29

5.3 Electrical Specifications ................................................ 29

5.4 Serial ports ..................................................................... 29

5.5 IrDA ................................................................................. 30

5.6 Parallel Port..................................................................... 30

5.7 FDD .................................................................................. 30

5.8 IDE ................................................................................... 30

5.9 Ethernet specification.................................................... 30

Appendix A Electrical Characteristics 31

A.1 Standard PS/2 - Connectors .......................................... 34

A.2 RS232C ............................................................................ 34

A.3 ATA .................................................................................. 34

A.4 USB .................................................................................. 34

A.5 PCI .................................................................................... 35

A.6 ATX .................................................................................. 35

A.7 AC-LINK 97 (AC97) ..................................................... 35

CHAPTER

General Information

This chapter explains the concept of the

SOM 144 (System-on-Module) module. It

also gives the reasons why SOM 144 can

give the most value and benefits to

embedded system applications.

2SOM 144 Design Specification Rev.1.0

1.1Overview

SOM 144 is a new form factor to speed up developing embedded systems.

Simply put, it takes one SODIMM plus a front-end

connector on a 2.5-inch-Hard-Drive-size PC board. Through the

interface of the SODIMM transfer most of the common signals, such as

PCI and USB interfaces for most of peripheral devices and IDE interface

for Hard-Drive, CD-ROM, or Compact Flash. At the same time, special

signals or other function requests go through the

front-end connector.

Based on this specification, it is easier to develop a customer’s

solution board with an off the shelf SOM 144 module and reduce the time

to market of your product. With the SODIMM socket and within 5 sec, a

SOM 144 module is easy to install into or unload from

customer’s solution board.

This standard is a reference for board dimension and pinout of SOM 144

module. Different SOM 144 module may provide a different set of fea-

tures. Please refer the datasheet or manual of your SOM 144

module for details or consult your supplier for supported features. SOM

144 modules are only interchangeable as long as they provide the same

features. At this point, without changing customers’

solution board, customers can upgrade the system module with

higher performance CPU immediately. Some non-standard features like

LCD display interface are not usable without external parts. To create a

backplane or customer’s solution board for SOM 144 module, it’s highly

recommended having experience with PCI device

development. Furthermore, experience with signal integrity and

timing for the layout of your solution board is recommended.

Please contact you supplier or Advantech for advice.

In addition to this document, the user should refer to the following indus-

try standard specifications:

PCI Bus specification Rev 2.2

USB specification 1.1

ATX specification

AC97 Specification Revision 1.3, 2.0, and 2.1

HIROSE Catalog FX8 SERIES

Chapter 2 Pinout of SOM 144/PCI Interfaces 3

CHAPTER

Connector Assignments

and Descriptions

This chapter provides the pinout tables

for the SOM 144 PCI interface, including

the 144-pin SODIMM and recommended

80-pin frontend connector.

4SOM 144 Design Specification Rev.1.0

2.1 144-pin SODIMM (PCI/IDE/ Serial port

/USB/AC97/KB/Mouse)

Table 2-1: Pinout of 144-pin SODIMM

Pin Signal Pin Signal

1 GND 2 GND

3 VCC 4 VCC

5 IRQY 6 IRQX

7 IRQW 8 IRQZ

9 GND 10 PCIRST#

11 PCICLK1 12 GND

13 PCICLK2 14 PCICLK3

15 GND 16 GND

17 REQ#0 18 GNT#0

19 REQ#1 20 GNT#1

21 REQ#2 22 GNT#2

23 AD31 24 AD30

25 AD29 26 AD28

27 AD27 28 AD26

29 AD25 30 AD24

31 CBE#3 32 AD22

33 AD23 34 AD20

35 AD21 36 AD18

37 AD19 38 AD16

39 AD17 40 FRAME#

41 CBE#2 42 TRDY#

43 IRDY# 44 STOP#

45 DEVSEL# 46 PAR

47 LOCK# 48 AD15

49 GPERR# 50 AD14

51 SERR# 52 AD13

53 CBE#1 54 AD12

55 AD11 56 CBE#0

57 AD10 58 AD9

59 GND 60 GND

61 GND 62 GND

63 AD8 64 AD7

65 AD6 66 AD5

67 AD4 68 AD2

69 AD0 70 AD3

71 RESERVED 72 A D1

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