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The setup of the configuration jumpers on the SBC is described below. * indicates the default value of each jumper.

NOTE:
For two-position jumpers (3-post), "TOP" is toward the memory sockets; "BOTTOM" is toward the edge fingers.

* = default value

JU6 THERMAL THROTTLING ACTIVITY LED
If the processor core gets to a critical temperature, it slows itself down to half its normal speed. This jumper sets the way in which the LED displays in response to this self-limiting mode.

Install for real-time activity. The LED lights only when the processor is operating in slow-power mode.*

Remove for latched activity. The LED lights and stays on once the processor has gone into slow-power mode.

JU7 SPEED LED
This jumper is used in conjunction with the Link/Speed LED for the 10/100/1000Base-T Ethernet interface. The LED is located on the SBC's Gigabit LAN connector (LAN2/P1). For further information, see the Ethernet LEDs and Connectors section below.

Install to use the Link/Speed LED to indicate that the Ethernet interface has a valid link at either 1000-Mb/s or 100-Mb/s.
Green = valid link at 1000-Mb/s *
Orange = valid link at 100-Mb/s

Remove to use the Link/Speed LED to indicate that the Ethernet interface has a valid link at either 100-Mb/s or 10-Mb/s .
Orange = valid link at 100-Mb/s
Green = valid link at 10-Mb/s

JU8 PASSWORD CLEAR
Install for one power-up cycle to reset the password to the default (null password).
Remove for normal operation. *

JU9 SCSI TERMINATION
This jumper may be used to enable or disable on-board active termination for the Ultra160 SCSI interface.
Install on the TOP to enable active temination. *
Install on the BOTTOM to allow the AIC-7892 to control termination.
Remove to disable active termination.

JU10/JU11 SYSTEM FLASH ROM OPERATIONAL MODES
The Flash ROM has two programmable sections: the Boot Block for "flashing" in the BIOS and the Main Block for the executable BIOS and PnP parameters. Normally only the Main Block is updated when a new BIOS is flashed into the system.

	JU10	JU11
All Blocks Write Enabled	Remove *	Remove *
Boot Block Write Protected	Install	Remove
Block 2-16 Write Protected	Remove	Install

JU12 CMOS CLEAR
Install on the TOP to operate. *
Install on the BOTTOM to clear.

NOTE: The CMOS Clear jumper works on power-up. To clear the CMOS, power down the system, install the jumper, then turn the power back on. CMOS is cleared during the POST routines. Wait for AMIBIOS to display a "CMOS Settings Wrong" message; then power down the system again and remove the jumper before the next power-up.

JU19 SCSI ACTIVITY LED
Install to light the hard drive LED for SCSI drive activity. *
Remove if you do not have a SCSI drive (i.e., the SCSI controller is not being used).

NOTE:
Pin 1 on the connectors is indicated by the square pad
on the PCB.

P1 - PCI 10/100BASE-T ETHERNET CONNECTOR
8 pin shielded RJ-45 connector, Belfuse #0826-1X1T-23

PIN SIGNAL 1 TRP1+ 2 TRP1- 3 TRP2+ 4 TRP3+ 5 TRP3- 6 TRP2- 7 TRP4+ 8 TRP4-

P3 - FLOPPY DRIVE CONNECTOR
34 pin dual row header, Amp #103308-7

PIN SIGNAL 1 Gnd 3 Gnd 5 Gnd 7 Gnd 9 Gnd 11 Gnd 13 Gnd 15 Gnd 17 Gnd 19 Gnd 21 Gnd 23 Gnd 25 Gnd 27 Gnd 29 Gnd 31 Gnd 33 Gnd

PIN SIGNAL 2 N-RPM 4 NC 6 D-Rate0 8 P-Index 10 N-Motoron 1 12 N-Drive Sel2 14 N-Drive Sel1 16 N-Motoron 2 18 N-Dir 20 N-Stop Step 22 N-Write Data 24 N-Write Gate 26 P-Track 0 28 P-Write Protect 30 N-Read Data 32 N-Side Select 34 Disk Chng

P4A - KEYBOARD HEADER
5 pin single row header, Amp #640456-5

PIN SIGNAL 1 Kbd Clock 2 Kbd Data 3 Key 4 Kbd Gnd 5 Kbd Power (+5V fused) with self-resetting fuse

P5 - SPEAKER PORT CONNECTOR
4 pin single row header, Amp #640456-4

PIN SIGNAL 1 Speaker Data 2 Key 3 Gnd 4 +5V

P6 - SERIAL PORT 1 CONNECTOR
10 pin dual row header, Amp #103308-1

PIN SIGNAL 1 Carrier Detect 3 Receive Data-I 5 Transmit Data-0 7 Data Terminal Ready-0 9 Signal Gnd

PIN SIGNAL 2 Data Set Ready-I 4 Request to Send-O 6 Clear to Send-I 8 Ring Indicator-I 10 NC

P7 - SERIAL PORT 2 CONNECTOR
10 pin dual row header, Amp #103308-1

PIN SIGNAL 1 Carrier Detect 3 Receive Data-I 5 Transmit Data-0 7 Data Terminal Ready-0 9 Signal Gnd

PIN SIGNAL 2 Data Set Ready-I 4 Request to Send-O 6 Clear to Send-I 8 Ring Indicator-I 10 NC

P8 - PARALLEL PORT CONNECTOR
26 pin dual row header, Amp #103308-6

PIN SIGNAL 1 Strobe 3 Data Bit 0 5 Data Bit 1 7 Data Bit 2 9 Data Bit 3 11 Data Bit 4 13 Data Bit 5 15 Data Bit 6 17 Data Bit 7 19 ACK 21 Busy 23 Paper End 25 Slct

PIN SIGNAL 2 Auto Feed XT 4 Error 6 Init 8 Slct In 10 Gnd 12 Gnd 14 Gnd 16 Gnd 18 Gnd 20 Gnd 22 Gnd 24 Gnd 26 NC

P9 - PS/2 MOUSE AND KEYBOARD CONNECTOR
6 pin mini DIN, Kycon #KMDG-6S-B4T

PIN SIGNAL 1 Ms Data 2 Kbd Data 3 Gnd 4 Power (+5V fused) with self-resetting fuse 5 Ms Clock 6 Kbd Clock

P9A - PS/2 MOUSE HEADER
6 pin single row header, Amp #640456-6

PIN SIGNAL 1 Ms Data 2 Reserved 3 Gnd 4 Power (+5V fused) with self-resetting fuse 5 Ms Clock 6 Reserved

P10 - EXTERNAL RESET CONNECTOR
2 pin header, Amp #640456-2

PIN SIGNAL 1 External Reset In (Low Active) 2 Gnd

P11 - PRIMARY IDE HARD DRIVE CONNECTOR
40 pin dual row header, 3M #30340-6002HB

PIN SIGNAL 1 Reset 3 Data 7 5 Data 6 7 Data 5 9 Data 4 11 Data 3 13 Data 2 15 Data 1 17 Data 0 19 Gnd 21 DRQ 0 23 IOW 25 IOR 27 IORDY 29 DACK 0 31 IRQ 14 33 Add 1 35 Add 0 37 CS 1P 39 IDEACTP

PIN SIGNAL 2 Gnd 4 Data 8 6 Data 9 8 Data 10 10 Data 11 12 Data 12 14 Data 13 16 Data 14 18 Data 15 20 NC 22 Gnd 24 Gnd 26 Gnd 28 SELPDP 30 Gnd 32 NC 34 PCBL DET * 36 Add 2 38 CS 3P 40 Gnd

P11A - SECONDARY IDE HARD DRIVE CONNECTOR
40 pin dual row header, 3M #30340-6002HB

PIN SIGNAL 1 Reset 3 Data 7 5 Data 6 7 Data 5 9 Data 4 11 Data 3 13 Data 2 15 Data 1 17 Data 0 19 Gnd 21 DRQ 1 23 IOW 25 IOR 27 IORDY 29 DACK 1 31 IRQ15 33 Add 1 35 Add 0 37 CS 1S 39 IDEACTS

PIN SIGNAL 2 Gnd 4 Data 8 6 Data 9 8 Data 10 10 Data 11 12 Data 12 14 Data 13 16 Data 14 18 Data 15 20 NC 22 Gnd 24 Gnd 26 Gnd 28 SELPDS 30 Gnd 32 NC 34 SCBL DET * 36 Add 2 38 CS 3S 40 Gnd

* For ATA/66 and ATA/100 drives, which should be set for Cable Select for proper speed operation. If other drives are detected, pin definition is Gnd.

P12 - HARD DRIVE LED CONNECTOR
4 pin single row header, Amp #640456-4

PIN SIGNAL 1 LED + 2 LED - 3 LED - 4 LED +

P13 - ULTRA160 SCSI CONNECTOR
68 pin high density connector, Amp #749069-7

PIN SIGNAL 1 SCD12 2 SCD13 3 SCD14 4 SCD15 5 SCDPH 6 SCD0 7 SCD1 8 SCD2 9 SCD3 10 SCD4 11 SCD5 12 SCD6 13 SCD7 14 SCDPL 15 Gnd 16 DIFSENSE 17 TERMPWR 18 TERMPWR 19 NC 20 Gnd 21 SCATN 22 Gnd 23 SCBSY 24 SCACK 25 SCRST 26 SCMSG 27 SCSEL 28 SCCD 29 SCREQ 30 SCIO 31 SCD8 32 SCD9 33 SCD10 34 SCD11

PIN SIGNAL 35 SCD#12 36 SCD#13 37 SCD#14 38 SCD#15 39 SCDPH# 40 SCD#0 41 SCD#1 42 SCD#2 43 SCD#3 44 SCD#4 45 SCD#5 46 SCD#6 47 SCD#7 48 SCDPL# 49 Gnd 50 Gnd 51 TERMPWR 52 TERMPWR 53 NC 54 Gnd 55 SCATN# 56 Gnd 57 SCBSY# 58 SCACK# 59 SCRST# 60 SCMSG# 61 SCSEL# 62 SCCD# 63 SCREQ# 64 SCIO# 65 SCD#8 66 SCD#9 67 SCD#10 68 SCD#11

P15 - PCI SXGA INTERFACE CONNECTOR
15 pin VGA Ultra Compact connector, Amp #788574-1

PIN SIGNAL     1 Red     2 Green     3 Blue     4 NC     5 Gnd

PIN SIGNAL     6 Gnd     7 Gnd     8 Gnd     9 +5V     10 Gnd

PIN SIGNAL     11 NC     12 EEDI     13 HSYNC     14 VSYNC     15 EECS

P16 - 10/100BASE-T ETHERNET CONNECTOR
8 pin shielded RJ-45 connector, Pulse #J0035D21B

PIN SIGNAL 1 TD+ 2 TD- 3 RX+ 4 NC 5 NC 6 RX- 7 NC 8 NC

P17 - UNIVERSAL SERIAL BUS (USB) CONNECTOR
8 pin dual row header, Molex #702-46-0821
(+5V fused with self-resetting fuses)

PIN SIGNAL 1 +5V - USB0 3 USB0- 5 USB0+ 7 Gnd - USB0

PIN SIGNAL 2 +5V - USB1 4 USB1- 6 USB1+ 8 Gnd - USB1

P18 - SYSTEM HARDWARE MONITOR CONNECTOR
4 pin single row header, Amp #640456-4

PIN	SIGNAL
1	Gnd
2	GPO (General Purpose Output)
3	CI (Chassis Intrusion Input)
4	OVT (Over Temperature)

P19 - CPU FAN
3 pin single row header, Molex #22-23-2031

PIN SIGNAL 1 Gnd 2 +12V 3 FanTach

P21 - POWER GOOD LED
2 pin single row header, Amp #640456-2

PIN SIGNAL 1 LED - 2 LED +

P22 - SYSTEM MANAGEMENT BUS CONNECTOR
2 pin single row header, Amp #640456-2

PIN SIGNAL 1 SMB Clock 2 SMB Data

P23 - +5V VRM SUPPLY
2 pin header, Molex #39-29-3026

PIN SIGNAL 1 +5V 2 +5V

P24 - CPU VRM POWER INPUT
4 pin header, Molex #39-29-3046

PIN SIGNAL 1 Gnd 2 Gnd 3 +12V 4 +12V

The Double Data Rate (DDR) memory interface consists of a single channel which terminates in two dual in-line memory module (DIMM) sockets and supports auto detection of up to 2GB of memory. The System BIOS automatically detects memory type, size and speed.

The SBC uses industry standard 72-bit wide gold finger PC1600 or PC2100 memory modules in two 184-pin sockets.

NOTE: Memory modules can be installed in one or both DIMM sockets. If only one DIMM module is used, it should be populated in the top DIMM socket (Bank 2 - BK2). If two modules are used, they must be the same DIMM speed (PC1600 or PC2100), but may be different sizes (see table below). Registered DIMMs are not supported. All memory modules must have gold contacts.

The SBC supports DIMMs which are PC1600/PC2100 compliant and have the following features:

• 184-pin with gold-plated contacts
• ECC (72-bit) memory
• Unbuffered configuration

* Intel and Pentium are registered trademarks of Intel Corporation.

All other product names are trademarks of their respective owners.

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