Supermicro H8DGU-LN4F+ User manual

USER’S MANUAL

Revision 1.1c

®

SUPER

H8DGU-LN4F+

The information in this User’s Manual has been carefully reviewed and is believed to be accurate.

The vendor assumes no responsibility for any inaccuracies that may be contained in this document,

and makes no commitment to update or to keep current the information in this manual, or to notify

any person or organization of the updates. Please Note: For the most up-to-date version of this

manual, please see our web site at

www.supermicro.com.

Super Micro Computer, Inc. ("Supermicro") reserves the right to make changes to the product

described in this manual at any time and without notice. This product, including software and

documentation, is the property of Supermicro and/or its licensors, and is supplied only under a

license. Any use or reproduction of this product is not allowed, except as expressly permitted by

the terms of said license.

IN NO EVENT WILL Super Micro Computer, Inc. BE LIABLE FOR DIRECT, INDIRECT, SPECIAL,

INCIDENTAL, SPECULATIVE OR CONSEQUENTIAL DAMAGES ARISING FROM THE USE

OR INABILITY TO USE THIS PRODUCT OR DOCUMENTATION, EVEN IF ADVISED OF THE

POSSIBILITY OF SUCH DAMAGES. IN PARTICULAR, SUPER MICRO COMPUTER, INC. SHALL

NOT HAVE LIABILITY FOR ANY HARDWARE, SOFTWARE, OR DATA STORED OR USED

WITH THE PRODUCT, INCLUDING THE COSTS OF REPAIRING, REPLACING, INTEGRATING,

INSTALLING OR RECOVERING SUCH HARDWARE, SOFTWARE, OR DATA.

Any disputes arising between manufacturer and customer shall be governed by the laws of Santa

Clara County in the State of California, USA. The State of California, County of Santa Clara shall be

the exclusive venue for the resolution of any such disputes. Supermicro's total liability for all claims

will not exceed the price paid for the hardware product.

FCC Statement: Refer to Supermicro's web site for FCC Compliance Information.

California Best Management Practices Regulations for Perchlorate Materials: This Perchlorate

warning applies only to products containing CR (Manganese Dioxide) Lithium coin cells. “Perchlorate

Material-special handling may apply. See

www.dtsc.ca.gov/hazardouswaste/perchlorate”.

WARNING: Handling of lead solder materials used in this

product may expose you to lead, a chemical known to

the State of California to cause birth defects and other

reproductive harm.

Manual Revision 1.1c

Release Date: March 06, 2014

Unless you request and receive written permission from Super Micro Computer, Inc., you may not

copy any part of this document.

Information in this document is subject to change without notice. Other products and companies

referred to herein are trademarks or registered trademarks of their respective companies or mark

holders.

Printed in the United States of America

Preface

iii

Preface

About This Manual

This manual is written for system integrators, PC technicians and

knowledgeable PC users. It provides information for the installation and use of the

H8DGU-LN4F+ serverboard.

The H8DGU-LN4F+ serverboard is based on the AMD® SR5690/SP5100 chipset

and supports one AMD Socket G34 type processor with up to 128 GB of ECC/Non-

ECC Unbuffered or 768 GB of ECC Registered DIMM in 24 slots.

Please refer to the motherboard speciﬁ cations pages on our web site for updates on

supported processors (http://www.supermicro.com/aplus/). This product is intended

to be professionally installed.

Manual Organization

Chapter 1 includes a checklist of what should be included in your motherboard

box, describes the features, speciﬁ cations and performance of the motherboard

and provides detailed information about the chipset.

Chapter 2 begins with instructions on handling static-sensitive devices. Read this

chapter when installing the processor(s) and memory modules and when installing

the motherboard in a chassis. Also refer to this chapter to connect the hard disk

drives, the various ports, and the power and reset buttons and the system LEDs.

If you encounter any problems, see Chapter 3, which describes troubleshooting

procedures for the video, the memory and the setup conﬁ guration stored in CMOS.

For quick reference, a general FAQ (Frequently Asked Questions) section is

provided. Instructions are also included for contacting technical support. In addition,

you can visit our web site for more detailed information.

Chapter 4 includes an introduction to BIOS and provides detailed information on

running the CMOS Setup utility.

Appendix A provides BIOS Error Beep Code Messages.

Appendix B lists BIOS POST Checkpoint Codes.

iv

Table of Contents

Chapter 1 Introduction

1-1 Overview .........................................................................................................1-1

Checklist ..........................................................................................................1-1

1-2 Contacting Supermicro ....................................................................................1-2

1-3 Motherboard Features .....................................................................................1-7

1-4 Chipset Overview ..........................................................................................1-10

AMD SR5690/SP5100 Chipset .....................................................................1-10

HyperTransport Technology .......................................................................... 1-10

1-5 PC Health Monitoring ....................................................................................1-10

1-6 Power Conﬁ guration Settings.........................................................................1-11

1-7 Power Supply ................................................................................................1-12

1-8 Super I/O .......................................................................................................1-12

Chapter 2 Installation

2-1 Standardized Warning Statements ................................................................. 2-1

About Standardized Warning Statements .......................................................2-1

2-2 Static-Sensitive Devices ..................................................................................2-4

Precautions ..................................................................................................... 2-4

Unpacking ....................................................................................................... 2-4

2-3 Processor and Heatsink Installation................................................................2-5

2-4 Mounting the Motherboard into a Chassis ......................................................2-7

2-5 Installing Memory ............................................................................................2-7

DIMM Module Population Conﬁ guration ..................................................2-10

2-6 PCI Expansion Cards .....................................................................................2-11

2-7 I/O Port and Control Panel Connections ......................................................2-12

Front Control Panel .......................................................................................2-12

2-8 Connector Deﬁ nitions ................................................................................... 2-13

Power Connectors ................................................................................... 2-13

Power Connector ...................................................................................... 2-13

Reset Connector ...................................................................................... 2-14

Power Fail LED ........................................................................................ 2-14

Overheat (OH)/Fan Fail/PWR Fail/UID LED ............................................2-14

NIC2 (Link/Activity) LED ........................................................................... 2-14

NIC1 (Link/Activity) LED ........................................................................... 2-14

HDD LED ..................................................................................................2-15

Power LED Connector ............................................................................. 2-15

NMI Button ...............................................................................................2-15

Table of Contents

v

NIC4 (LAN4) LED ..................................................................................... 2-15

NIC3 (LAN3) LED ..................................................................................... 2-15

Chassis Intrusion .....................................................................................2-15

Universal Serial Bus Ports .......................................................................2-16

USB Headers ........................................................................................... 2-16

SGPIO ......................................................................................................2-16

Overheat LED ...........................................................................................2-16

Serial Ports ...............................................................................................2-17

Power SMB (I

2

C) ......................................................................................2-17

IPMB .........................................................................................................2-17

Video Connector .......................................................................................2-17

Power LED/Speaker .................................................................................2-18

ATX PS/2 Keyboard and PS/2 Mouse Ports ............................................2-18

Compact Flash Card PWR Connector .....................................................2-18

LAN1/2/3/4 (Ethernet Ports) ..................................................................... 2-19

Unit Identiﬁ er Button ................................................................................. 2-19

Fan Headers .............................................................................................2-19

UIO Power Connector .............................................................................. 2-20

Trusted Platform Module Header ............................................................. 2-20

2-8 Jumper Settings ............................................................................................2-21

Explanation of Jumpers ................................................................................ 2-21

CMOS Clear .............................................................................................2-21

LAN1/2/3/4 Enable/Disable ..................................................................... 2-22

Watch Dog Enable/Disable ......................................................................2-22

I2C to PCI-Express Slot ........................................................................... 2-22

VGA Enable/Disable ................................................................................. 2-22

2-9 Onboard Indicators ........................................................................................2-23

LAN1/LAN2/LAN3/LAN4 LEDs .................................................................2-23

IPMI Dedicated LAN LEDs ....................................................................... 2-23

Power LED ............................................................................................... 2-23

BMC Heartbeat LED ................................................................................ 2-24

UID LED (LE1) ........................................................................................2-24

2-10 SATA Drive Connections ............................................................................... 2-24

SATA Ports ...............................................................................................2-24

2-11 Enabling SATA RAID ..................................................................................... 2-25

Serial ATA (SATA)..........................................................................................2-25

Installing the OS/SATA Driver ....................................................................... 2-25

Building a Driver Diskette ......................................................................... 2-25

H8DGU-LN4F+ Serverboard User’s Manual

Table of Contents

vi

Enabling SATA RAID in the BIOS ................................................................. 2-26

Using the DotHill and Adaptec RAID Utility .................................................. 2-28

Installing the RAID Driver During OS Installation .........................................2-28

2-12 Installing Drivers ............................................................................................2-29

Supero Doctor III ........................................................................................... 2-30

2-13 Serverboard Battery ......................................................................................2-32

Chapter 3 Troubleshooting

3-1 Troubleshooting Procedures ........................................................................... 3-1

Before Power On ............................................................................................ 3-1

No Power ........................................................................................................3-1

No Video .........................................................................................................3-2

Memory Errors ............................................................................................... 3-2

Losing the System’s Setup Conﬁ guration ....................................................... 3-2

3-2 Technical Support Procedures ........................................................................ 3-2

3-3 Frequently Asked Questions ........................................................................... 3-3

3-4 Returning Merchandise for Service.................................................................3-4

Chapter 4 BIOS

4-1 Introduction ......................................................................................................4-1

4-2 Main Menu ...................................................................................................... 4-2

4-3 Advanced Settings Menu ................................................................................ 4-2

4-3 Security Menu ...............................................................................................4-16

4-4 Boot Menu ..................................................................................................... 4-16

4-5 Exit Menu ......................................................................................................4-17

Appendix A BIOS Error Beep Codes

Appendix B BIOS POST Checkpoint Codes

B-1 Uncompressed Initialization Codes .................................................................B-1

B-2 Bootblock Recovery Codes .............................................................................B-2

B-3 Uncompressed Initialization Codes .................................................................B-3

Chapter 1: Introduction

1-1

Chapter 1

Introduction

1-1 Overview

Checklist

Congratulations on purchasing your computer motherboard from an acknowledged

leader in the industry. Supermicro boards are designed with the utmost attention to

detail to provide you with the highest standards in quality and performance.

Please check that the following items have all been included with your motherboard.

If anything listed here is damaged or missing, contact your retailer.

• One (1) H8DGU-LN4F+ serverboard

• Two (2) 2ft. Amphenol, SATA cable (CBL-0044L)

• Two (2) Retention brackets (BKT-0035L)

Note: For your system to work properly, please follow the links below to download

all necessary drivers/utilities and the user’s manual for your motherboard.

• Supermicro product manuals: http://www.supermicro.com/support/manuals/

• Product drivers and utilities: ftp://ftp.supermicro.com

• Product safety information:

http://super-dev/about/policies/safety_information.cfm

• If you have any questions, please contact our support team at:

support@supermicor.com

1-2

H8DGU-LN4F+ Serverboard User’s Manual

1-2 Contacting Supermicro

Headquarters

Address: Super Micro Computer, Inc.

980 Rock Ave.

San Jose, CA 95131 U.S.A.

Tel: +1 (408) 503-8000

Fax: +1 (408) 503-8008

Email: [email protected] (General Information)

[email protected] (Technical Support)

Web Site:

www.supermicro.com

Europe

Address: Super Micro Computer B.V.

Het Sterrenbeeld 28, 5215 ML

's-Hertogenbosch, The Netherlands

Tel: +31 (0) 73-6400390

Fax: +31 (0) 73-6416525

Email: [email protected] (General Information)

[email protected] (Technical Support)

[email protected] (Customer Support)

Web Site:

www.supermicro.com

Asia-Paciﬁ c

Address: Super Micro Computer, Inc.

3F, No. 150, Jian 1st Rd.

Zhonghe Dist., New Taipei City 235

Taiwan (R.O.C)

Tel: +886-(2) 8226-3990

Fax: +886-(2) 8226-3992

Email: [email protected]

Tel: +886-(2)-8226-3990

Web Site:

www.supermicro.com.tw

Chapter 1: Introduction

1-3

Figure 1-1. H8DGU-LN4F+ Image

1-4

H8DGU-LN4F+ Serverboard User’s Manual

Notes:

Note 1: Jumpers not indicated are for test purposes only.

Note 2: Not all ports, jumpers or LED Indicators are available on all serverboards.

Figure 1-2. H8DGU-LN4F+ Motherboard Layout

(not drawn to scale)

JTPM1

JF1

SATA4 SATA2 SATA0

SATA5 SATA3 SATA1

JWF1

JI2C2 JI2C1

JL1

JOH1

JD1

JWD1

JPL2

JPL1

JPG1

JPK1

JPW1

BATTERY

JBT1

FAN2

FAN3

FAN4

FAN5

FAN7

FAN1

FAN6

DP5

DP4

JPI2C

JIPMB1

JPW2 JPW3

LE1

SPEAKER

UIOP

VGA2

VGA1

UID

USB2/3

USB6

COM2

USB4/5

T-SGPIO2

T-SGPIO1

PCI-E 2.0 X16

PCI-E 2.0 (X4+X1+X1) IN X8

PCI-E 2.0 X8 in X4

LAN4

LAN3

P1-DIMM4C

P1-DIMM4B

P1-DIMM4A

P1-DIMM3B

P1-DIMM3A

P1-DIMM2C

P1-DIMM3C

P1-DIMM2A

P1-DIMM1A

P1-DIMM1C

P1-DIMM1B

P1-DIMM2B

LAN2

LAN1

P2-DIMM2A

P2-DIMM1A

P2-DIMM1C

P2-DIMM1B

P2-DIMM3C

P2-DIMM2C

P2-DIMM2B

P2-DIMM3A

P2-DIMM3B

P2-DIMM4A

P2-DIMM4B

P2-DIMM4C

FAN8

CPU2

IPMI_LAN

USB0/1

COM1

KB/

MOUSE

INTEL

82576

INTEL

82576

CPU1

AMD

SR5690

WINBOND

BMC

AMD

SP5100

Chapter 1: Introduction

1-5

H8DGU-LN4F+ Quick Reference

Jumper Description Default Setting

JBT1 CMOS Clear (See Section 2-7)

JI2C1/JI2C2 I2C to PCI-E Slot Enable/Disable Both Open (Disabled)

JPG1 VGA Enable/Disable Pins 1-2 (Enabled)

JPL1 LAN 1/2 Enable/Disable Pins 1-2 (Enabled)

JPL2 LAN 3/4 Enable/Disable Pins 1-2 (Enabled)

JWD1 Watch Dog Pins 1-2 (Reset)

LED Description

LAN Ports LEDs for the LAN Ethernet ports

Dedicated IPMI LAN LEDs for the dedicated IPMI LAN Ethernet port

DP4 LED for Serverboard Power-On

DP5 LED for BMC Heartbeat

LE1 LED for UID Button

1-6

H8DGU-LN4F+ Serverboard User’s Manual

Connector Description

COM1/COM2 COM1 Serial Port/Header

FAN 1-8 Chassis/CPU Fan Headers

IPMI LAN Dedicated IPMI LAN Port

JIPMB1 System Management Bus Header for the IPMI Slot

JD1 Speaker Header

JF1 Front Panel Connector

JL1 Chassis Intrusion Header

JOH1 Overheat Warning Header

JPI2C Power I

2

C Header

JPK1 NIC3/NIC4 LED Header

JTPM1 Trusted Platform Module Header

JPW1 24-pin Main ATX Power Connector

JPW2/3 +12V 8-pin CPU Power Connectors

JWF1 Compact Flash Card Power Connector

LAN1/2/3/4 Gigabit Ethernet (RJ45) Ports

PS2 Mouse/Keyboard PS2 Mouse/Keyboard connectors

UID Unit Identiﬁ er Button

UIOP Universal I/O Power Connector

SATA0 ~ SATA5 SATA Ports

T-SGPIO-1/TSGPIO-2 Serial General Purpose Input/Output Header for SATA

USB0/1, USB2/3, USB4/5, USB6 Universal Serial Bus (USB) Ports, Headers and Type-A Port

VGA1/VGA2 VGA Connectors

Chapter 1: Introduction

1-7

1-3 Motherboard Features

CPU

• Dual AMD Opteron 6000 series (AMD Socket G34 type) processor

Note: Refer to our web site for details on supported processors.

Memory

• Up to twenty-Four (24) single/dual/tri/quad-channel DIMM slots that

support up to up to 128 GB of ECC/Non-ECC Unbuffered or 768 GB

of ECC Registered DIMM DDR3-1600/1333/1066 Mhz speed,

1 GB, 2 GB, 4 GB, 8 GB, 16 GB or 32 GB size SDRAM memory in

1.5V or 1.35V voltages.

Note: Refer to Section 2-5 before installing memory and our web site for recommended DIMMs.

Chipset

• AMD SR5690 chipset and one SP5100 Southbridge chipset

Expansion Slots

• 1U Left Side: 1/1 UIO/PCI Express x8 or 2 PCI Express x8; or 1 PCI Express

x16 or 1/1 UIO/PCI Express x16

• 2U Left Side: 1/2 UIO/PCI Express x8 or 1/1 UIO/PCI Express x16; or 3 PCI-

Express x8

• 2U Right Side: 1/1/1 PCI-Express x4/x1/x1

BIOS

• 16 Mb AMI BIOS® SPI Flash ROM

• APM 1.2, DMI 2.3, PCI 2.2, ACPI 1.0 (ACPI 2.0 is BIOS supported), SMBIOS

2.3, Real Time Clock Wakeup, Plug and Play (PnP), BIOS resume hot keys,

Hardware BIOS Virus Protection

PC Health Monitoring

• Onboard voltage monitors

• Fan status monitor with ﬁ rmware/software on/off and speed control

• Watch Dog

• Environmental temperature monitoring via BIOS

• Power-up mode control for recovery from AC power loss

• System resource alert (via included utility program)

• Auto-switching voltage regulator for the CPU core

• CPU thermal trip support

1-8

H8DGU-LN4F+ Serverboard User’s Manual

• I

2

C temperature sensing logic

• Chipkill Support

ACPI Features

• Microsoft OnNow

• Slow blinking LED for suspend state indicator

• BIOS support for USB keyboard

Onboard I/O

• Six (6) SATA ports supported by an on-chip SATA controller (RAID 0, 1, 10

supported)

• Seven (7) USB (Universal Serial Bus 2.0) ports (2x rear, 4x header,

1x type A)

• Four (4) LAN ports supported by two onboard Intel® 82576 dual port Ethernet

controllers for 10/100/1000Base-T

• One (1) dedicated IPMI LAN port

• Two (2) VGA ports supported by an onboard Matrox

®

G200 graphics controller

(with 16 MB DDR2 memory)

• Two COM Ports (one external serial port, one Fast UART 16550 port)

Other

• Onboard power LED

• Chassis intrusion detection

CD Utilities

• BIOS ﬂ ash upgrade utility

• Super Doctor III

• IPMI 1.5 / 2.0

Dimensions

• Propriatory form-factor: (LxW) 12.8" x 16.5" (325 x 419 mm)

Chapter 1: Introduction

1-9

DIMM A1

DIMM A2

DIMM A1

HT3 Link

16/16-3.2GHz

DIMM B1

DIMM B2

DIMM C1

DIMM C2

DIMM D1

DIMM D2

DIMM B1

DIMM B2

DIMM C1

DIMM C2

DIMM D1

DIMM D2

MUX

SATA x6

PCI-E GEN2 X4

RJ45

A-Link

SP5100

BMC

VGA

WPCM450-R

PCI

LPC

SMBus

SIO

W83527

SPI Flash

KB/MS

RMII

DDR2 SDRAM

64M x 16-bit

PSU I2C

IPMB

FE PHY

RTL8201N

VGA

RJ45

7xUSB

Clock Gen

PCI-E GEN2 X8

Slot2

TPM

HWM

W83795G

SR5690

RJ45

PCI-E GEN2 X4+X1+X1

Slot3

PCI-E GEN2 X16

Slot1

DIMM A0

DIMM B0

DIMM C0

DIMM D0

DIMM C0

DIMM B0

DIMM A0

HT3 Link

8/8-3.2GHz

COM2

COM1

PCI-E GEN2 X4

LAN3/4

INTEL

KAWELA

82576

RJ45

AMD

Socket G34

CPU2

AMD

Socket G34

CPU1

HT3 Link

16/16-2.6 GHz

LAN1/2

INTEL

KAWELA

82576

Figure 1-3. AMD SR5690/SP5100 Chipset:

System Block Diagram

Note: This is a general block diagram and may not exactly represent

the features on your motherboard. See the previous pages for the

actual speciﬁ cations of your motherboard.

1-10

H8DGU-LN4F+ Serverboard User’s Manual

1-4 Chipset Overview

The H8DGU-LN4F+ serverboard is based on the AMD SR5690/SP5100 chipset. This

chipset functions as a Media and Communications Processor (MCP). Controllers for

the system memory are integrated directly into AMD Opteron processors.

AMD SR5690/SP5100 Chipset

The AMD SR5690/SP5100 are each a single-chip, high-performance HyperTransport

peripheral controller. It includes a 42-lane PCI Express interface, an AMD Opteron

16-bit Hyper Transport interface link, a six-port Serial ATA interface and a seven-port

USB 2.0 interface. This hub connects directly to the CPU.

HyperTransport Technology

HyperTransport technology is a high-speed, low latency point to point link that was

designed to increase the communication speed by a factor of up to 48x between

integrated circuits. This is done partly by reducing the number of buses in the

chipset to reduce bottlenecks and by enabling a more efﬁ cient use of memory

in multi-processor systems. The end result is a signiﬁ cant increase in bandwidth

within the chipset.

1-5 PC Health Monitoring

This section describes the PC health monitoring features of the H8DGU-LN4F+

serverboard. The serverboard has an onboard System Hardware Monitor chip that

supports PC health monitoring.

Onboard Voltage Monitors

The onboard voltage monitor will continuously scan crucial voltage levels. Once

a voltage becomes unstable, it will give a warning or send an error message to

the screen. Users can adjust the voltage thresholds to deﬁ ne the sensitivity of the

voltage monitor. Real time readings of these voltage levels are all displayed in BIOS.

Fan Status Monitor with Firmware/Software Speed Control

The PC health monitor can check the RPM status of the cooling fans. The onboard

fans are controlled by thermal management via BIOS.

Chapter 1: Introduction

1-11

CPU Overheat/Fan Fail LED and Control

This feature is available when the user enables the CPU overheat/Fan Fail warning

function in the BIOS. This allows the user to deﬁ ne an overheat temperature. When

this temperature is exceeded or when a fan failure occurs, the Overheat/Fan Fail

warning LED is triggered.

Auto-Switching Voltage Regulator for the CPU Core

The 5+1-phase-switching voltage regulator for the CPU core can support up to

AMD Opteron 6000SE series processors and auto-sense voltage IDs ranging from

0.8 V to 1.55V. This will allow the regulator to run cooler and thus make the system

more stable.

1-6 Power Conﬁ guration Settings

This section describes the features of your motherboard that deal with power and

power settings.

Microsoft OnNow

The OnNow design initiative is a comprehensive, system-wide approach to system

and device power control. OnNow is a term for a PC that is always on but appears

to be off and responds immediately to user or other requests.

Slow Blinking LED for Suspend-State Indicator

When the CPU goes into a suspend state, the chassis power LED will start blinking

to indicate that the CPU is in suspend mode. When the user presses any key, the

CPU will wake-up and the LED will automatically stop blinking and remain on.

BIOS Support for USB Keyboard

If a USB keyboard is the only keyboard in the system, it will function like a normal

keyboard during system boot-up.

1-12

H8DGU-LN4F+ Serverboard User’s Manual

Main Switch Override Mechanism

The power button can function as a system suspend button. When the user

depresses the power button, the system will enter a SoftOff state. The monitor

will be suspended and the hard drive will spin down. Depressing the power button

again will cause the whole system to wake-up. During the SoftOff state, the power

supply provides power to keep the required circuitry in the system alive. In case the

system malfunctions and you want to turn off the power, just depress and hold the

power button for 4 seconds. The power will turn off and no power will be provided

to the motherboard.

1-7 Power Supply

As with all computer products, a stable power source is necessary for proper and

reliable operation. It is even more important for processors that have high CPU

clock rates.

The H8DGU-LN4F+ serverboard requires the use of proprietary power supplies.

Please refer to the pinout information for the power connectors in Section 6 of

Chapter 2 for detailed information on power requirements.

In areas where noisy power transmission is present, you may choose to install a

line ﬁ lter to shield the computer from noise. It is recommended that you also install

a power surge protector to help avoid problems caused by power surges.

Warning: To prevent the possibility of explosion, do not use the wrong type of

onboard CMOS battery or install it upside down.

1-8 Super I/O

The disk drive adapter functions of the Super I/O Winbond® BMC chip includes a

data separator, write pre-compensation circuitry, decode logic, data rate selection,

a clock generator, drive interface control logic and interrupt and DMA logic. The

wide range of functions integrated onto the Super I/O greatly reduces the number

of components required for interfacing with ﬂ oppy disk drives.

The Super I/O provides two high-speed, 16550 compatible serial communication

ports (UARTs), one of which supports serial infrared communication. Each UART

includes a 16-byte send/receive FIFO, a programmable baud rate generator,

complete modem control capability and a processor interrupt system. Both UARTs

provide legacy speed with baud rate of up to 115.2 Kbps as well as an advanced

speed with baud rates of 250 K, 500 K, or 1 Mb/s, which support higher speed

modems.

Chapter 1: Introduction

1-13

The Super I/O provides functions that comply with ACPI (Advanced Conﬁ guration

and Power Interface), which includes support of legacy and ACPI power management

through a SMI or SCI function pin. It also features auto power management to reduce

power consumption.

The IRQs, DMAs and I/O space resources of the Super I/O can be ﬂ exibly adjusted

to meet ISA PnP requirements, which support ACPI and APM (Advanced Power

Management).

1-14

H8DGU-LN4F+ Serverboard User’s Manual

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