EFA CORPORATION

E5TX-AT

Device Type

Mainboard

Processor

CX 6X86/CX 6X86L/CX 686MX/AM K5/AM K6/Pentium/Pentium MMX

Processor Speed

75/90/100/120/133/150/166/200/233MHz

Chip Set

Intel

Video Chip Set

None

Maximum Onboard Memory

256MB (EDO & SDRAM supported)

Maximum Video Memory

None

Cache

256/512KB

BIOS

Award

Dimensions

230mm x 220mm

I/O Options

32-bit PCI slots (4), floppy drive interface, green PC connector, IDE interfaces (2), parallel port, PS/2 mouse interface, serial ports (2), IR connector, USB connector

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

Serial port 2

CN1

Speaker

J11/pins 1/3/5/7

Serial port 1

CN2

Power LED & keylock

J11/pins 2/4/6/8/10

Floppy drive interface

CN3

Turbo LED

J11/pins 11 & 12

Parallel port

CN4

Green PC connector

J11/pins 13 & 14

IDE interface 2

CN5

IDE interface LED

J11/pins 15 & 16

IDE interface 1

CN6

Reset switch

J11/pins 17 & 18

PS/2 mouse interface

J1

Green PC LED

J11/pins 19 & 20

IR connector

J4

External battery

J12

USB connector

J10

32-bit PCI slots

PC1 – PC4

USER CONFIGURABLE SETTINGS

Function

Label

Position

»

Factory configured - do not alter

JP8

Unidentified

»

CMOS memory normal operation

JP13

Pins 1 & 2 closed

 

CMOS memory clear

JP13

Pins 2 & 3 closed

SIMM CONFIGURATION

Size

Bank 0

Bank 1

8MB

(2) 1M x 36

None

16MB

(2) 2M x 36

None

16MB

(2) 1M x 36

(2) 1M x 36

24MB

(2) 2M x 36

(2) 1M x 36

32MB

(2) 4M x 36

None

32MB

(2) 2M x 36

(2) 2M x 36

40MB

(2) 4M x 36

(2) 1M x 36

48MB

(2) 4M x 36

(2) 2M x 36

64MB

(2) 8M x 36

None

64MB

(2) 4M x 36

(2) 4M x 36

72MB

(2) 8M x 36

(2) 1M x 36

80MB

(2) 8M x 36

(2) 2M x 36

96MB

(2) 8M x 36

(2) 4M x 36

128MB

(2) 8M x 36

(2) 8M x 36

128MB

(2) 16M x 36

None

136MB

(2) 16M x 36

(2) 1M x 36

144MB

(2) 16M x 36

(2) 2M x 36

160MB

(2) 16M x 36

(2) 4M x 36

192MB

(2) 16M x 36

(2) 8M x 36

256MB

(2) 16M x 36

(2) 16M x 36

Note: Board accepts EDO memory.

DIMM CONFIGURATION

Size

Bank 2

Bank 3

8MB

(1) 1M x 64

None

16MB

(1) 2M x 64

None

16MB

(1) 1M x 64

(1) 1M x 64

24MB

(1) 2M x 64

(1) 1M x 64

32MB

(1) 4M x 64

None

32MB

(1) 2M x 64

(1) 2M x 64

40MB

(1) 4M x 64

(1) 1M x 64

48MB

(1) 4M x 64

(1) 2M x 64

64MB

(1) 8M x 64

None

64MB

(1) 4M x 64

(1) 4M x 64

72MB

(1) 8M x 64

(1) 1M x 64

80MB

(1) 8M x 64

(1) 2M x 64

96MB

(1) 8M x 64

(1) 4M x 64

128MB

(1) 16M x 64

None

128MB

(1) 8M x 64

(1) 8M x 64

136MB

(1) 16M x 64

(1) 1M x 64

144MB

(1) 16M x 64

(1) 2M x 64

160MB

(1) 16M x 64

(1) 4M x 64

192MB

(1) 16M x 64

(1) 8M x 64

256MB

(1) 16M x 64

(1) 16M x 64

Note: Board accepts SDRAM memory.

CACHE CONFIGURATION

Size

Bank 0

TAG

256KB

(2) 32K x 32

Unidentified

512KB

(2) 64K x 32

Unidentified

CPU SPEED SELECTION (CX 6X86)

CPU speed

Clock speed

Multiplier

JP1

JP2

JP3

JP6

JP7

150MHz

60MHz

2x

1 & 2

1 & 2

2 & 3

1 & 2

2 & 3

166MHz

66MHz

2x

1 & 2

1 & 2

1 & 2

1 & 2

2 & 3

Note: Pins designated should be in the closed position.

CPU SPEED SELECTION (CX 6X86L)

CPU speed

Clock speed

Multiplier

JP1

JP2

JP3

JP6

JP7

166MHz

66MHz

2x

1 & 2

1 & 2

1 & 2

1 & 2

2 & 3

Note: Pins designated should be in the closed position.

CPU SPEED SELECTION (CX 6X86MX)

CPU speed

Clock speed

Multiplier

JP1

JP2

JP3

JP6

JP7

166MHz

60MHz

2.5x

1 & 2

1 & 2

2 & 3

2 & 3

2 & 3

166MHz

66MHz

2x

1 & 2

1 & 2

1 & 2

1 & 2

2 & 3

200MHz

66MHz

2.5x

1 & 2

1 & 2

1 & 2

2 & 3

2 & 3

Note: Pins designated should be in the closed position.

CPU SPEED SELECTION (AM K5)

CPU speed

Clock speed

Multiplier

JP1

JP2

JP3

JP6

JP7

90MHz

60MHz

1.5x

1 & 2

1 & 2

2 & 3

1 & 2

1 & 2

100MHz

66MHz

1.5x

1 & 2

1 & 2

1 & 2

1 & 2

1 & 2

120MHz

60MHz

1.5x

1 & 2

1 & 2

2 & 3

1 & 2

1 & 2

133MHz

66MHz

1.5x

1 & 2

1 & 2

1 & 2

1 & 2

1 & 2

150MHz

60MHz

2.5x

1 & 2

1 & 2

2 & 3

2 & 3

2 & 3

166MHz

66MHz

2.5x

1 & 2

1 & 2

1 & 2

2 & 3

2 & 3

Note: Pins designated should be in the closed position.

CPU SPEED SELECTION (AM K6)

CPU speed

Clock speed

Multiplier

JP1

JP2

JP3

JP6

JP7

166MHz

66MHz

2.5x

1 & 2

1 & 2

1 & 2

2 & 3

2 & 3

200MHz

66MHz

3x

1 & 2

1 & 2

1 & 2

2 & 3

1 & 2

233MHz

66MHz

3.5x

1 & 2

1 & 2

1 & 2

1 & 2

1 & 2

Note: Pins designated should be in the closed position.

CPU SPEED SELECTION (INTEL)

CPU speed

Clock speed

Multiplier

JP1

JP2

JP3

JP6

JP7

90MHz

60MHz

1.5x

1 & 2

1 & 2

2 & 3

1 & 2

1 & 2

100MHz

66MHz

1.5x

1 & 2

1 & 2

1 & 2

1 & 2

1 & 2

120MHz

60MHz

2x

1 & 2

1 & 2

2 & 3

1 & 2

2 & 3

133MHz

66MHz

2x

1 & 2

1 & 2

1 & 2

1 & 2

2 & 3

150MHz

60MHz

2.5x

1 & 2

1 & 2

2 & 3

2 & 3

2 & 3

166MHz

66MHz

2.5x

1 & 2

1 & 2

1 & 2

2 & 3

2 & 3

200MHz

66MHz

3x

1 & 2

1 & 2

1 & 2

2 & 3

1 & 2

Note: Pins designated should be in the closed position.

CPU SPEED SELECTION (INTEL MMX)

CPU speed

Clock speed

Multiplier

JP1

JP2

JP3

JP6

JP7

166MHz

66MHz

2.5x

1 & 2

1 & 2

1 & 2

2 & 3

2 & 3

200MHz

66MHz

3x

1 & 2

1 & 2

1 & 2

2 & 3

1 & 2

233MHz

66MHz

3.5x

1 & 2

1 & 2

1 & 2

1 & 2

1 & 2

Note: Pins designated should be in the closed position.

CPU VOLTAGE SELECTION

Voltage

JP9

JP10

JP11

JP12

2.0v

Pins 2 & 3 closed

Pins 2 & 3 closed

Pins 2 & 3 closed

Pins 2 & 3 closed

2.5v

Pins 1 & 2 closed

Pins 2 & 3 closed

Pins 1 & 2 closed

Pins 2 & 3 closed

2.8v

Pins 2 & 3 closed

Pins 2 & 3 closed

Pins 2 & 3 closed

Pins 1 & 2 closed

2.9v

Pins 1 & 2 closed

Pins 2 & 3 closed

Pins 2 & 3 closed

Pins 1 & 2 closed

3.2v

Pins 2 & 3 closed

Pins 2 & 3 closed

Pins 1 & 2 closed

Pins 1 & 2 closed

3.3v

Pins 1 & 2 closed

Pins 2 & 3 closed

Pins 1 & 2 closed

Pins 1 & 2 closed

3.45v

Pins 2 & 3 closed

Pins 1 & 2 closed

Pins 1 & 2 closed

Pins 1 & 2 closed

3.52v

Pins 1 & 2 closed

Pins 1 & 2 closed

Pins 1 & 2 closed

Pins 1 & 2 closed