EMAC, INC.

PCM-5894, PCM-5894C

Device Type Single Board Computer
Processor CX 6X86L/CX 6X86MX/AM K5/AM K6/Pentium/Pentium MMX
Processor Speed 75/90/100/120/133/150/166/180/200/233MHz
Chip Set SIS
Video Chip Set Chips and Technology
Maximum Onboard Memory 128MB (EDO supported)
Maximum Video Memory 2MB 
Cache 512KB 
BIOS AMI
Dimensions 203mm x 146mm
I/O Options 32-bit PCI slot, Auxiliary power connector, Ethernet 10BaseT interface, Flat panel connector, Floppy drive interface, IDE interface, IR connector, Parallel interface, PC/104 connectors (2), Power connector, PS/2 mouse/AT keyboard interface, Serial interfaces (4), Solid-state flash disk socket, USB interface, VGA connector


CONNECTIONS
Purpose

Location

 Purpose

Location
VGA connector CN1 10BaseT Ethernet interface

CN14
CPU fan power A CN2 Serial interface 1 CN15A
Flat panel connector

CN3

 Serial interface 2 CN15B
USB interface

CN5

 Serial interface 3 CN15C
IDE interface LED

CN6/Pins 1 & 2

 Serial interface 4 CN15D
Speaker CN6/Pins 3 - 5 Floppy drive interface CN16
Reset switch

CN6/Pins 7 & 8

 CPU fan power B CN17
16-bit PC/104 connector CN7 Unidentified CNJ1
8-bit PC/104 connector

CN7A

 Unidentified CNJ2
Auxiliary power (-5V, -12V) CN8 Unidentified CNJ3
PS/2 mouse/AT keyboard interface CN9 Ethernet Tx LED connector J14
IR connector CN10 Ethernet Rx LED connector J15
IDE interface

CN11

 Ethernet Link LED connector J16
Power connector (+5V, +12V) CN12 32-bit PCI slot

PC1
Parallel interface CN13 Solid-state flash disk (DOC) socket U9


USER CONFIGURABLE SETTINGS

Function

Label

Position

»

CMOS memory normal operation

J7

Pins 1 & 2 closed
  CMOS memory clear

J7

Pins 2 & 3 closed
Note: Pin 1 location of J7 is unidentified.


SIMM CONFIGURATION

Size

Bank 0

8MB

(2) 1M x 32

16MB

(2) 2M x 32

32MB

(2) 4M x 32

64MB

(2) 8M x 32

128MB

(2) 16M x 32
Note: Board supports EDO memory.


CPU BUS SPEED SELECTION

CPU

 PCI J2/Pins 1 & 2 J2/Pins 3 & 4 J2/Pins 5 & 6
  50MHz 25MHz Open Closed Open
  50MHz 33.3MHz Closed Closed Open
  55MHz 27.5MHz Closed Closed Closed
  60MHz 30MHz Closed Open Open
» 66MHz 33.3MHz Open Open Open
  75MHz 32MHz Open Closed Closed

Note: Pin 1 location of J2 is unidentified.


CPU MULTIPLIER SELECTION

Multiplier

 J8/Pins 1 & 2 J8/Pins 3 & 4 J8/Pins 5 & 6
  1.5x/3.5x Open Open Open
  2.0x Closed Open Open
  2.5x Closed Closed Open
» 3.0x Open Closed Open
  4.0x Closed Open Closed
  4.5x Closed Closed Closed
  5.0x Open Closed Closed
  5.5x Open Open Closed

Note: Pin 1 location of J8 is unidentified.


CPU VOLTAGE SELECTION (DUAL)

Voltage

J10

 J12/Pins 1 & 2 J12/Pins 3 & 4 J12/Pins 5 & 6 J12/Pins 7 & 8

 

2.1V

Pins 3 & 5, 4 & 6

 Open Open Open Open
  2.2V Pins 3 & 5, 4 & 6 Open Open Open Closed
  2.3V Pins 3 & 5, 4 & 6 Open Open Closed Open
  2.4V Pins 3 & 5, 4 & 6 Open Open Closed Closed
  2.5V Pins 3 & 5, 4 & 6 Open Closed Open Open
  2.6V Pins 3 & 5, 4 & 6 Open Closed Open Closed
  2.7V Pins 3 & 5, 4 & 6 Open Closed Closed Open
» 2.8V Pins 3 & 5, 4 & 6 Open Closed Closed Closed
  2.9V Pins 3 & 5, 4 & 6 Closed Open Open Open
  3.0V Pins 3 & 5, 4 & 6 Closed Open Open Closed
  3.1V Pins 3 & 5, 4 & 6 Closed Open Closed Open
  3.2V Pins 3 & 5, 4 & 6 Closed Open Closed Closed
  3.4V Pins 3 & 5, 4 & 6 Closed Closed Open Closed
  3.6V Pins 3 & 5, 4 & 6 Closed Closed Closed Closed

Note: Pin 1 locations of J10 & J12 are unidentified. Designated pins should be in the closed position.


CPU VOLTAGE SELECTION (SINGLE)

Voltage

J10

 J12/Pins 1 & 2 J12/Pins 3 & 4 J12/Pins 5 & 6 J12/Pins 7 & 8
3.3V Pins 1 & 3, 2 & 4 Closed Closed Open Open
3.5V Pins 1 & 3, 2 & 4 Closed Closed Closed Open

Note: Pin 1 locations of J10 & J12 are unidentified. Designated pins should be in the closed position.


SERIAL INTERFACE 2 SELECTION

Setting

J17

J18
»

RS-232

 Pins 1 & 2 closed

Pins 1 & 2, 4 & 5, 7 & 8, 10 & 11 closed
 

RS-422

 Pins 3 & 4 closed

Pins 2 & 3, 5 & 6, 8 & 9, 11 & 12 closed
 

RS-485

 Pins 5 & 6 closed

Pins 2 & 3, 5 & 6, 8 & 9, 11 & 12 closed

Note: Pin 1 locations of J17 & J18 are unidentified. Pins should be open unless designated as closed.


SERIAL INTERFACES 3 & 4 IRQ SELECTION

Setting

J19
»

COM3 (IRQ5), COM4 (IRQ10)

Pins 2 & 4, 3 & 5 closed
 

COM3 (IRQ10), COM4 (IRQ5)

Pins 1 & 3, 4 & 6 closed

Note: Pin 1 location of J19 is unidentified.


SERIAL INTERFACE 3 VOLTAGE SELECTION

Setting

J20/Pins 1 & 2

 J20/Pins 3 & 4 J20/Pins 5 & 6
»

RI

Open

 Open Closed
 

+5V

Open

 Closed Open
 

+12V

Closed

 Open Open

Note: Pin 1 location of J20 is unidentified.


SERIAL INTERFACE 4 VOLTAGE SELECTION

Setting

J21/Pins 1 & 2

 J21/Pins 3 & 4 J21/Pins 5 & 6
»

RI

Open

 Open Closed
 

+5V

Open

 Closed Open
 

+12V

Closed

 Open Open

Note: Pin 1 location of J21 is unidentified.


SOLID-STATE DISK (DOC) ADDRESS SELECTION

Address

J13/Pins 1 & 2

 J13/Pins 3 & 4 J13/Pins 5 & 6
 

CC00

Open

 Open Open
 

D000

Open

 Open Closed
  D400 Open Closed Open
  D800 Open Closed Closed
» DC00 Closed Open Open
  Disabled Closed Closed Closed

Note: Pin 1 location of J13 is unidentified.


FLAT PANEL CONNECTOR VOLTAGE SELECTION

Voltage

J3

J11
»

5V

Pins 1 & 2 closed

 Pins 1 & 2 closed
 

3.3V

Pins 2 & 3 closed

 Pins 2 & 3 closed

Note: Pin 1 locations of J3 & J11 are unidentified.


MISCELLANEOUS TECHNICAL NOTES

Solid-state flash disk socket supports (DOC 1000 & 2000) devices from 2MB to 72MB.