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S1668 (REV. 1.2)

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 (CONT)

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