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RISCOM/N2CSU

SDL COMMUNICATIONS, INC.

RISCOM/N2CSU

Card Type

Serial/T1 CSU/DSU

Chip Set

Hitachi HD64570

Maximum Onboard Memory

256KB DRAM

T1 Transfer Rate

1.554Mbps

Data Bus

16-bit ISA

CONNECTIONS

Function

Label

Function

Label

T1 line

CN1

RS-232, RS-422/449, RS-530, or V.35 port

CN2

USER CONFIGURABLE SETTINGS

Function

Label

Position

Current ceiling enabled

J5

Unidentified

 

Current ceiling disabled

J5

Unidentified

Factory configured - do not alter

S1/7

Unidentified

Factory configured - do not alter

S1/8

Unidentified

INTERRUPT

J1 is used to set the interrupt. Exact settings are unidentified. Interrupts 3, 4, 5, 9, 10, 11, 12, and 15 are available.

BASE I/O ADDRESS

Setting

SW1/1

SW1/2

SW1/3

SW1/4

SW1/5

SW1/6

 

100h

On

On

On

On

Off

On

 

110h

Off

On

On

On

Off

On

 

120h

On

Off

On

On

Off

On

 

130h

Off

Off

On

On

Off

On

 

140h

On

On

Off

On

Off

On

300h

On

On

On

On

Off

Off

 

3B0h

Off

Off

On

Off

Off

Off

 

3C0h

On

On

Off

Off

Off

Off

 

3D0h

Off

On

Off

Off

Off

Off

 

3E0h

On

Off

Off

Off

Off

Off

 

3F0h

Off

Off

Off

Off

Off

Off

Note: A total of 48 base address settings are available. The switches are a binary representation of the decimal memory addresses. SW1/6 is the Most Significant Bit and switch SW1/1 is the Least Significant Bit. The switches have the following decimal values: SW1/6=512, SW1/5=256, SW1/4=128, SW1/3=64, SW1/2=32, SW1/1=16. Turn off the switches and add the values of the switches to obtain the correct memory address. (Off=1, On=0)

DIAGNOSTIC LED(S)

LED

Color

Status

Condition

LED1

Red

On

Network connection is broken

LED1

Red

Off

Network connection is good

LED2

Red

On

Frame error has been detected

LED2

Red

Off

Frame error has not been detected

LED3

Yellow

On

Card is in loopback mode

LED3

Yellow

Off

Card is not in loopback mode

LED4

Green

Blinking

Card processor is functioning normally

LED4

Green

Off

Card processor is not functioning normally