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# 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
(IMG) IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Function | Label | Function | Label |
|----------+-------+---------------------------------+-------|
| T1 line | CN1 | RS-232, RS-422/449, RS-530, or | CN2 |
| | | V.35 port | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|-------------------------------------+-------+--------------|
| » | Current ceiling enabled | J5 | Unidentified |
|---+---------------------------------+-------+--------------|
| | Current ceiling disabled | J5 | Unidentified |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | S1/7 | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | S1/8 | Unidentified |
| | alter | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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 |
+------------------------------------------------------------+