NETWORK INTERFACE TECHNOLOGY CORPORATION
16-BIT ARCNET ADAPTER
NIC Type | ARCnet |
Transfer Rate | 2.5Mbps |
Data Bus | 8-bit ISA |
Topology | Star Linear Bus |
Wiring Type | Unshielded twisted pair RG58A/U 50ohm coaxial |
Boot ROM | Available |

CABLE TYPE | ||||
Type | J5/A | J5/B | J5/C | |
| » | RG58A/U 50ohm coaxial | Pins 1 & 2 closed | Pins 1 & 2 closed | Pins 1 & 2 closed |
Unshielded twisted pair | Pins 2 & 3 closed | Pins 2 & 3 closed | Pins 2 & 3 closed | |
CONNECTIONS | |
Purpose | Location |
J1 | External LED connector 1 |
J2 | External LED connector 2 |

DIAGNOSTIC LED | |||
LED | Color | Status | Condition |
LED1 | Red | On or Blinking | Data transmission is occurring |
LED2 | Green | On | Proper connection established |
LED2 | Green | Blinking | Reconfiguration occurring |
LED1 & LED2 | Red & Green | Off | Call Technical Support |
INTERRUPT SELECT | |||||||
IRQ | J7/A | J7/B | J7/C | J7/D | J7/E | J7/F | J7/G |
IRQ2 | Closed | Open | Open | Open | Open | Open | Open |
IRQ3 | Open | Closed | Open | Open | Open | Open | Open |
IRQ4 | Open | Open | Closed | Open | Open | Open | Open |
IRQ5 | Open | Open | Open | Closed | Open | Open | Open |
IRQ10 | Open | Open | Open | Open | Closed | Open | Open |
IRQ11 | Open | Open | Open | Open | Open | Closed | Open |
IRQ12 | Open | Open | Open | Open | Open | Open | Closed |
I/O ADDRESS SELECT | |||
Address Range | J4/F | J4/G | J4/H |
260h - 26Fh | Pins 1 & 2 closed | Pins 1 & 2 closed | Pins 1 & 2 closed |
290h - 29Fh | Pins 2 & 3 closed | Pins 1 & 2 closed | Pins 1 & 2 closed |
2E0h - 2EFh | Pins 1 & 2 closed | Pins 2 & 3 closed | Pins 1 & 2 closed |
2F0h - 2FFh | Pins 2 & 3 closed | Pins 2 & 3 closed | Pins 1 & 2 closed |
300h - 30Fh | Pins 1 & 2 closed | Pins 1 & 2 closed | Pins 2 & 3 closed |
350h - 35Fh | Pins 2 & 3 closed | Pins 1 & 2 closed | Pins 2 & 3 closed |
380h - 38Fh | Pins 1 & 2 closed | Pins 2 & 3 closed | Pins 2 & 3 closed |
3E0h - 3EFh | Pins 2 & 3 closed | Pins 2 & 3 closed | Pins 2 & 3 closed |
BASE MEMORY ADDRESS SELECT | |||||
Address Range | J4/A | J4/B | J4/C | J4/D | J4/E |
C0000h - C07FFh | Pins 1 & 2 | Pins 1 & 2 | Pins 1 & 2 | Pins 1 & 2 | Pins 1 & 2 |
C0800h - C0FFFh | Pins 2 & 3 | Pins 1 & 2 | Pins 1 & 2 | Pins 1 & 2 | Pins 1 & 2 |
C1000h - C17FFh | Pins 1 & 2 | Pins 2 & 3 | Pins 1 & 2 | Pins 1 & 2 | Pins 1 & 2 |
C1800h - C1FFFh | Pins 2 & 3 | Pins 2 & 3 | Pins 1 & 2 | Pins 1 & 2 | Pins 1 & 2 |
C4000h - C47FFh | Pins 1 & 2 | Pins 1 & 2 | Pins 2 & 3 | Pins 1 & 2 | Pins 1 & 2 |
C4800h - C4FFFh | Pins 2 & 3 | Pins 1 & 2 | Pins 2 & 3 | Pins 1 & 2 | Pins 1 & 2 |
C5000h - C57FFh | Pins 1 & 2 | Pins 2 & 3 | Pins 2 & 3 | Pins 1 & 2 | Pins 1 & 2 |
C5800h - C5FFFh | Pins 2 & 3 | Pins 2 & 3 | Pins 2 & 3 | Pins 1 & 2 | Pins 1 & 2 |
CC000h - CC7FFh | Pins 1 & 2 | Pins 1 & 2 | Pins 1 & 2 | Pins 2 & 3 | Pins 1 & 2 |
CC800h - CCFFFh | Pins 2 & 3 | Pins 1 & 2 | Pins 1 & 2 | Pins 2 & 3 | Pins 1 & 2 |
CD000h - CD7FFh | Pins 1 & 2 | Pins 2 & 3 | Pins 1 & 2 | Pins 2 & 3 | Pins 1 & 2 |
CD800h - CDFFFh | Pins 2 & 3 | Pins 2 & 3 | Pins 1 & 2 | Pins 2 & 3 | Pins 1 & 2 |
D0000h - D07FFh | Pins 1 & 2 | Pins 1 & 2 | Pins 2 & 3 | Pins 2 & 3 | Pins 1 & 2 |
D0800h - D0FFFh | Pins 2 & 3 | Pins 1 & 2 | Pins 2 & 3 | Pins 2 & 3 | Pins 1 & 2 |
D4800h - D4FFFh | Pins 2 & 3 | Pins 1 & 2 | Pins 1 & 2 | Pins 1 & 2 | Pins 2 & 3 |
D1800h - D1FFFh | Pins 2 & 3 | Pins 2 & 3 | Pins 2 & 3 | Pins 2 & 3 | Pins 1 & 2 |
D4000h - D47FFh | Pins 1 & 2 | Pins 1 & 2 | Pins 1 & 2 | Pins 1 & 2 | Pins 2 & 3 |
D5000h - D57FFh | Pins 1 & 2 | Pins 2 & 3 | Pins 1 & 2 | Pins 1 & 2 | Pins 2 & 3 |
D5800h - D5FFFh | Pins 2 & 3 | Pins 2 & 3 | Pins 1 & 2 | Pins 1 & 2 | Pins 2 & 3 |
D8000h - D87FFh | Pins 1 & 2 | Pins 1 & 2 | Pins 2 & 3 | Pins 1 & 2 | Pins 2 & 3 |
D8800h - D8FFFh | Pins 2 & 3 | Pins 1 & 2 | Pins 2 & 3 | Pins 1 & 2 | Pins 2 & 3 |
D9000h - D97FFh | Pins 1 & 2 | Pins 2 & 3 | Pins 2 & 3 | Pins 1 & 2 | Pins 2 & 3 |
D9800h - D9FFFh | Pins 2 & 3 | Pins 2 & 3 | Pins 2 & 3 | Pins 1 & 2 | Pins 2 & 3 |
DC000h - DC7FFh | Pins 1 & 2 | Pins 1 & 2 | Pins 1 & 2 | Pins 2 & 3 | Pins 2 & 3 |
DC800h - DCFFFh | Pins 2 & 3 | Pins 1 & 2 | Pins 1 & 2 | Pins 2 & 3 | Pins 2 & 3 |
DD000h - DD7FFh | Pins 1 & 2 | Pins 2 & 3 | Pins 1 & 2 | Pins 2 & 3 | Pins 2 & 3 |
DD800h - DDFFFh | Pins 2 & 3 | Pins 2 & 3 | Pins 1 & 2 | Pins 2 & 3 | Pins 2 & 3 |
E0000h - E07FFh | Pins 1 & 2 | Pins 1 & 2 | Pins 2 & 3 | Pins 2 & 3 | Pins 2 & 3 |
E0800h - E0FFFh | Pins 2 & 3 | Pins 1 & 2 | Pins 2 & 3 | Pins 2 & 3 | Pins 2 & 3 |
E1000h - E17FFh | Pins 1 & 2 | Pins 2 & 3 | Pins 2 & 3 | Pins 2 & 3 | Pins 2 & 3 |
E1800h - E1FFFh | Pins 2 & 3 | Pins 2 & 3 | Pins 2 & 3 | Pins 2 & 3 | Pins 2 & 3 |
Note: All Pins designated should be in the closed position. | |||||
BOOT ROM | ||
Setting | J3 | |
| » | Enabled | Pins 1 & 2 closed |
Disabled | Pins 2 & 3 closed | |
NODE ADDRESS | ||||||||
Node | SW1/1 | SW1/2 | SW1/3 | SW1/4 | SW1/5 | SW1/6 | SW1/7 | SW1/8 |
0 | - | - | - | - | - | - | - | - |
1 | Off | On | On | On | On | On | On | On |
2 | On | Off | On | On | On | On | On | On |
3 | Off | Off | On | On | On | On | On | On |
4 | On | On | Off | On | On | On | On | On |
251 | Off | Off | On | Off | Off | Off | Off | Off |
252 | On | On | Off | Off | Off | Off | Off | Off |
253 | Off | On | Off | Off | Off | Off | Off | Off |
254 | On | Off | Off | Off | Off | Off | Off | Off |
255 | Off | Off | Off | Off | Off | Off | Off | Off |
Note:Node address 0 is used for messaging between nodes and must not be used. A total of 255 node address settings are available. The switches are a binary representation of the decimal node addresses. Switch 1 is the Least Significant Bit and switch 8 is the Most Significant Bit. The switches have the following decimal values: switch 8=128, 7=64, 6=32, 5=16, 4=8, 3=4, 2=2, 1=1. Turn Off the switches and add the values of the Off switches to obtain the correct node address. (On=0, Off=1) | ||||||||
TOPOLOGY | |
Topology | J6 |
Star | Closed |
Linear Bus | Open |