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S1668 (REV. 1.2) Motherboard Settings and Configuration






TYAN COMPUTER CORPORATION

S1668 (REV. 1.2)

Processor

Pentium Pro

Processor Speed

150/166/180/200MHz

Chip Set

Intel

Video Chip Set

None

Maximum Onboard Memory

1GB (EDO supported)

Maximum Video Memory

None

Cache

256/512KB (located on Pentium Pro CPU)

BIOS

AMI/Award

Dimensions

330mm x 218mm

I/O Options

32-bit PCI slots (5), floppy drive interface, IDE interfaces (2), parallel port, PS/2 mouse port, serial ports (2), IR connectors (2), VRM connectors (2), USB connectors (2), soft on power switch

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

Serial port 1

CN1

Turbo LED

J42

Parallel port

CN2

Speaker

J43

PS/2 mouse port

CN3

Power LED & keylock

J44

Serial port 2

CN4

Reset switch

J45

IDE interface 2

CN5

IDE interface LED

J46

IDE interface 1

CN6

Turbo switch

J47

Floppy drive interface

CN7

Chassis fan power

J49

IR connector

CON4

Chassis fan power

J50

IR connector

CON5

32-bit PCI slots

PC1 - PC5

Soft on power switch

J1

VRM connector

VRM0

USB connector 1

J18

VRM connector

VRM1

USB connector 2

J25

   

USER CONFIGURABLE SETTINGS

Function

Label

Position

 

SMC I/O chip type select 665IR

J26

Pins 1 & 2 closed

 

SMC I/O chip type select 669IR

J26

Pins 2 & 3 closed

»

Factory configured - do not alter

J30

Unidentified

»

Factory configured - do not alter

J31

Unidentified

»

Flash BIOS voltage select 5v

J32

Pins 1 & 2 closed

 

Flash BIOS voltage select 12v

J32

Pins 2 & 3 closed

»

CMOS memory normal operation

J41

Open

 

CMOS memory clear

J41

Closed

»

Factory configured - do not alter

J48

Unidentified

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

Bank 3

8MB

(2) 1M x 32

None

None

None

16MB

(2) 2M x 32

None

None

None

16MB

(2) 1M x 32

(2) 1M x 32

None

None

32MB

(2) 2M x 32

(2) 2M x 32

None

None

32MB

(2) 1M x 32

(2) 1M x 32

(2) 1M x 32

(2) 1M x 32

32MB

(2) 4M x 32

None

None

None

64MB

(2) 4M x 32

(2) 4M x 32

None

None

64MB

(2) 8M x 32

None

None

None

128MB

(2) 16M x 32

None

None

None

128MB

(2) 4M x 32

(2) 4M x 32

(2) 4M x 32

(2) 4M x 32

128MB

(2) 8M x 32

(2) 8M x 32

None

None

192MB

(2) 8M x 32

(2) 8M x 32

(2) 8M x 32

None

256MB

(2) 8M x 32

(2) 8M x 32

(2) 8M x 32

(2) 8M x 32

256MB

(2) 16M x 32

(2) 16M x 32

None

None

256MB

(2) 32M x 32

None

None

None

DRAM CONFIGURATION (CON’T)

Size

Bank 0

Bank 1

Bank 2

Bank 3

384MB

(2) 16M x 32

(2) 16M x 32

(2) 16M x 32

None

512MB

(2) 16M x 32

(2) 16M x 32

(2) 16M x 32

(2) 16M x 32

512MB

(2) 32M x 32

(2) 32M x 32

None

None

640MB

(2) 32M x 32

(2) 16M x 32

(2) 16M x 32

(2) 16M x 32

768MB

(2) 32M x 32

(2) 32M x 32

(2) 32M x 32

None

768MB

(2) 32M x 32

(2) 32M x 32

(2) 16M x 32

(2) 16M x 32

832MB

(2) 32M x 32

(2) 32M x 32

(2) 32M x 32

(2) 8M x 32

896MB

(2) 32M x 32

(2) 32M x 32

(2) 32M x 32

(2) 16M x 32

1024MB

(2) 32M x 32

(2) 32M x 32

(2) 32M x 32

(2) 32M x 32

Note: Board accepts EDO memory.

DRAM VOLTAGE SELECTION

Voltage

J2

J3

J4

J5

J14

J15

J16

J17

 

3.3v

Closed

Closed

Open

Open

Closed

Closed

Open

Open

»

5v

Open

Open

Closed

Closed

Open

Open

Closed

Closed

CACHE CONFIGURATION

Note: 256KB/512KB cache is located on the Pentium Pro CPU.

CPU SPEED SELECTION

CPU speed

J11

J12

J21

J22

J23

J24

J27

150MHz

Closed

Open

Open

Closed

Closed

Closed

3 & 4

166MHz

Open

Closed

Open

Closed

Closed

Closed

1 & 2

180MHz

Closed

Open

Closed

Open

Closed

Closed

3 & 4

200MHz

Open

Closed

Closed

Open

Closed

Closed

1 & 2

Note: Pins designated should be in the closed position.

CPU VOLTAGE SELECTION

Voltage

J10

J20

»

Auto select

Open

Open

 

2.1v

1 & 5

1 & 5

 

2.2v

2 & 6

2 & 6

 

2.3v

1 & 5, 2 & 6

1 & 5, 2 & 6

 

2.4v

3 & 7

3 & 7

 

2.5v

1 & 5, 3 & 7

1 & 5, 3 & 7

 

2.6v

2 & 6, 3 & 7

2 & 6, 3 & 7

 

2.7v

1 & 5, 2 & 6, 3 & 7

1 & 5, 2 & 6, 3 & 7

 

2.8v

4 & 8

4 & 8

 

2.9v

1 & 5, 4 & 8

1 & 5, 4 & 8

 

3.0v

2 & 6, 4 & 8

2 & 6, 4 & 8

 

3.1v

1 & 5, 2 & 6, 4 & 8

1 & 5, 2 & 6, 4 & 8

 

3.2v

3 & 7, 4 & 8

3 & 7, 4 & 8

 

3.3v

1 & 5, 3 & 7, 4 & 8

1 & 5, 3 & 7, 4 & 8

 

3.4v

2 & 6, 3 & 7, 4 & 8

2 & 6, 3 & 7, 4 & 8

 

3.5v

1 & 5, 2 & 6, 3 & 7, 4 & 8

1 & 5, 2 & 6, 3 & 7, 4 & 8

Note: Pins designated should be in the closed position.

SERIAL PORT SELECTION

Setting

J28

J29

»

Used and COM 1 or 2

Pins 1 & 2 closed

Pins 1 & 2 closed

 

Used as IR connector

Pins 2 & 3 closed

Pins 2 & 3 closed








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