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# QUATECH, INC.
MPA-2000/3000
Category Serial Controller
Chipset Controller Intel Corporation
I /O Options Supported Serial port
Maximum Onboard Memory N/A
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|--------------------+----------+-----------------+----------|
| DCE connector - | CN1 | DTE connector - | CN2 |
| female DB-25 | | male DB-25 | |
|------------------------------------------------------------|
| Note: Either CN1 or CN2 is installed, but not both. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRIVER CONTROL |
|------------------------------------------------------------|
| Setting | J2 |
|----------------------------------------+-------------------|
| Drivers always enabled | pins 1 & 2 closed |
|----------------------------------------+-------------------|
| Drivers enabled by communications | pins 2 & 3 closed |
| register bit D0 | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| RECEIVER CONTROL |
|------------------------------------------------------------|
| Setting | J2 |
|----------------------------------------+-------------------|
| Receivers always enabled | pins 4 & 5 closed |
|----------------------------------------+-------------------|
| Receivers enabled by communications | pins 5 & 6 closed |
| register bit D1 | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DMA REQUEST CHANNEL |
|------------------------------------------------------------|
| Setting | J3 |
|--------------------------------+---------------------------|
| DTR/REQA for transmitting data | pins 1 & 2 closed |
|--------------------------------+---------------------------|
| RDY/REQB for receiving data | pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MISCELLANEOUS TECHNICAL NOTES |
|------------------------------------------------------------|
| J1 is factory configured - do not alter. |
+------------------------------------------------------------+