EMAC, INC.
PCM-6890
| Device Type | Single Board Computer |
| Processor | Celeron |
| Processor Speed | 300/333/366/400/433MHz |
| Chip Set | Intel 440BX |
| Video Chip Set | Chips and Technology |
| Audio Chip Set | Creative Labs |
| Maximum Onboard Memory | 128MB (SDRAM supported) |
| Maximum Video Memory | 2MB |
| Cache | 0/128KB (located on the Celeron CPU) |
| BIOS | Award |
| Dimensions | 203mm x 146mm |
| I/O Options | 32-bit PCI slot, ATX power connector, Audio in - CD-ROM, Ethernet 10BaseT connector, Flat panel connector, Floppy drive interface, IDE interface, IR connector, Parallel interface, PC/104 connectors (2), PS/2 mouse/AT keyboard interface, Serial interfaces (4), Solid-state flash disk socket, Sound connector, System monitor interface, USB interface, VGA connector |
CONNECTIONS |
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| Purpose | Location |
Purpose | Location |
| CPU fan power | CN1 | Parallel interface | CN14 |
| 16-bit PC/104 connector | CN2 | 10BaseT Ethernet connector | CN15 |
| 8-bit PC/104 connector | CN2A |
Serial interface 1 | CN16A |
| USB interface | CN3 |
Serial interface 2 | CN16B |
| Audio in - CD-ROM | CN4 | Serial interface 3 | CN16C |
| IDE interface | CN6 |
Serial interface 4 | CN16D |
| IDE interface LED | CN7/Pins 1 & 2 |
Floppy drive interface | CN17 |
| Speaker | CN7/Pins 3 - 5 | System monitor interface | J2 |
| Reset switch | CN7/Pins 7 & 8 | Power switch | J6 |
| IR connector | CN8 | Ethernet Rx LED connector | LED2/Pins 1 & 2 |
| ATX power connector | CN9 | Ethernet Link LED connector | LED2/Pins 3 & 4 |
| Flat panel connector | CN10 |
Ethernet Tx LED connector | LED2/Pins 5 & 6 |
| PS/2 mouse/AT keyboard interface | CN11 | 32-bit PCI slot | PC1 |
| VGA connector | CN12 | Solid-state flash disk (DOC) socket | U18 |
| Sound connector | CN13 |
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| Note: Pin 1 locations of CN7 & LED2 are unidentified. | |||
USER CONFIGURABLE SETTINGS |
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Function |
Label |
Position |
|
» |
CMOS memory normal operation | J1 |
Pins 1 & 2 closed |
| CMOS memory clear | J1 |
Pins 2 & 3 closed |
|
| » | Audio output amplified | J5 |
Pins 3 & 5, 4 & 6 closed |
| Audio output not amplified | J5 | Pins 1 & 3, 2 & 4 closed |
|
| » | Flat panel clock signal select SHF | J8 | Pins 1 & 2 closed |
| Flat panel clock signal select ASHF | J8 | Pins 2 & 3 closed | |
| » | Flat panel connector voltage select 3.3V | J9 |
Pins 2 & 3 closed |
| Flat panel connector voltage select 5V | J9 |
Pins 1 & 2 closed |
|
» |
Factory configured - do not alter | SW1/1 |
Unidentified |
| Note: Pin 1 locations of J1, J5, J8 & J9 are unidentified. Switch 1 location on SW1 is unidentified | |||
DIMM CONFIGURATION |
|
Size |
Bank 0 |
16MB |
(1) 2M x 64 |
32MB |
(1) 4M x 64 |
64MB |
(1) 8M x 64 |
128MB |
(1) 16M x 64 |
| Note: Board supports SDRAM memory. | |
CPU MULTIPLIER SELECTION |
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Multiplier |
SW1/4 |
SW1/5 | SW1/6 | |
| 2.0x | On | Off | Off | |
| 2.5x | On | Off | On | |
| 3.0x | On | On | Off | |
| 3.5x | On | On | On | |
| 4.0x | Off | Off | Off | |
| 4.5x | Off | Off | On | |
| 5.0x | Off | On | Off | |
| » | 5.5x | Off | On | On |
Note: Switch 1 location of SW1 is unidentified. |
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SERIAL INTERFACE 2 SELECTION |
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Setting |
J7 |
J10 |
|
| » | 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 J7 & J10 are unidentified. All pins should be open unless designated as closed. |
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SERIAL INTERFACE 3 VOLTAGE SELECTION |
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Setting |
J4/Pins 1 & 2 |
J4/Pins 3 & 4 | J4/Pins 5 & 6 | |
| » | RI |
Open |
Open | Closed |
+5V |
Open |
Closed | Open | |
+12V |
Closed |
Open | Open | |
Note: Pin 1 location of J4 is unidentified. |
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SERIAL INTERFACE 4 VOLTAGE SELECTION |
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Setting |
J3/Pins 1 & 2 |
J3/Pins 3 & 4 | J3/Pins 5 & 6 | |
| » | RI |
Open |
Open | Closed |
+5V |
Open |
Closed | Open | |
+12V |
Closed |
Open | Open | |
Note: Pin 1 location of J3 is unidentified. |
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SOLID-STATE FLASH DISK (DOC) ADDRESS SELECTION |
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Address |
SW1/2 |
SW1/3 | |
D400 |
Off |
Off | |
| » | D800 | On | Off |
| DC00 | Off | On | |
Disable |
On |
On | |
Note: Switch 1 location of SW1 is unidentified. |
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MISCELLANEOUS TECHNICAL NOTES |
Solid-state flash disk socket supports (DOC 2000 & 1000 series) devices from 2MB to 144MB. |