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# 3COM CORPORATION
ETHERLINK II TP (3C503; ASSY.#6330)
NIC Type Ethernet
Transfer Rate 10Mbps
Data Bus 8-bit ISA
Topology Star
Wiring Type Unshielded twisted pair
DIX transceiver via DB-15 port
Boot ROM Available
(IMG) IMG 1
+------------------------------------------------------------+
| DC CONVERTER |
|------------------------------------------------------------|
| Setting | JP1 |
|----------------------------------------+-------------------|
| » | DC signal disabled (10BaseT | Pins 2 & 3 Closed |
| | standard) | |
|---+------------------------------------+-------------------|
| | DC signal enabled (non 10BaseT | Pins 1 & 2 Closed |
| | network) | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| TRANSMIT LEVEL |
|------------------------------------------------------------|
| Setting | JP2 |
|----------------------------------------+-------------------|
| » | Transmit level select normal | Pins 2 & 3 Closed |
| | (10Base-T standard) | |
|---+------------------------------------+-------------------|
| | Transmit level select low (non | Pins 1 & 2 Closed |
| | 10Base-T network) | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| RECEIVE LEVEL |
|------------------------------------------------------------|
| Setting | JP3 |
|----------------------------------------+-------------------|
| » | Receive level select normal | Pins 1 & 2 Closed |
| | (10Base-T standard) | |
|---+------------------------------------+-------------------|
| | Receive level select low (non | Pins 2 & 3 Closed |
| | 10Base-T network) | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| TRANSCEIVER EQUALIZATION |
|------------------------------------------------------------|
| Setting | JP4 | JP5 |
|------------------------------------------+--------+--------|
| » | Transmitter Equalization enabled | Closed | Open |
| | (10Base-T standard) | | |
|---+--------------------------------------+--------+--------|
| | Receiver Equalization enabled (non | Open | Closed |
| | 10Base-T network) | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| TWISTED PAIR IMPEDANCE |
|------------------------------------------------------------|
| Impedance | JP6 | JP7 | JP8 | JP9 |
|-----------+------------+-----------+-----------+-----------|
| 75ohm | Pins 1 & 2 | Pins 1 & | Pins 1 & | Pins 1 & |
| | | 2 | 2 | 2 |
|-----------+------------+-----------+-----------+-----------|
| 100ohm | Pins 2 & 3 | Pins 2 & | Pins 2 & | Pins 2 & |
| | | 3 | 3 | 3 |
|-----------+------------+-----------+-----------+-----------|
| 150ohm | Pins 3 & 4 | Pins 3 & | Pins 3 & | Pins 3 & |
| | | 4 | 4 | 4 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BOOT ROM ADDRESS |
|------------------------------------------------------------|
| Address | JP10 | JP11 | JP12 | JP13 | JP14 |
|----------+---------+---------+---------+---------+---------|
| Disabled | Closed | Open | Open | Open | Open |
|----------+---------+---------+---------+---------+---------|
| C8000h | Open | Open | Open | Open | Closed |
|----------+---------+---------+---------+---------+---------|
| CC000h | Open | Open | Open | Closed | Open |
|----------+---------+---------+---------+---------+---------|
| D8000h | Open | Open | Closed | Open | Open |
|----------+---------+---------+---------+---------+---------|
| DC000h | Open | Closed | Open | Open | Open |
+------------------------------------------------------------+
+---------------------------------------------------------------+
| I/O BASE ADDRESS |
|---------------------------------------------------------------|
|Address| JP15 | JP16 | JP17 | JP18 | JP19 | JP20 | JP21 | JP22 |
|-------+------+------+------+------+------+------+------+------|
| 250h | Open | Open | Open | Open |Closed| Open | Open | Open |
|-------+------+------+------+------+------+------+------+------|
| 280h | Open | Open | Open | Open | Open |Closed| Open | Open |
|-------+------+------+------+------+------+------+------+------|
| 2A0h | Open | Open | Open | Open | Open | Open |Closed| Open |
|-------+------+------+------+------+------+------+------+------|
| 2E0h | Open | Open | Open | Open | Open | Open | Open |Closed|
|-------+------+------+------+------+------+------+------+------|
| 300h |Closed| Open | Open | Open | Open | Open | Open | Open |
|-------+------+------+------+------+------+------+------+------|
| 310h | Open |Closed| Open | Open | Open | Open | Open | Open |
|-------+------+------+------+------+------+------+------+------|
| 330h | Open | Open |Closed| Open | Open | Open | Open | Open |
|-------+------+------+------+------+------+------+------+------|
| 350h | Open | Open | Open |Closed| Open | Open | Open | Open |
+---------------------------------------------------------------+
+------------------------------------------------------------+
| LINK INTEGRITY TEST |
|------------------------------------------------------------|
| Setting | JP23 |
|-----------------------------+------------------------------|
| » | Enabled | Pins 2 & 3 Closed |
|----------+------------------+------------------------------|
| | Disabled | Pins 1 & 2 Closed |
|------------------------------------------------------------|
| Note:Link Integrity is only used with 10Base-T wiring. |
| When using an AUI transciever, the test should be |
| disabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIAGNOSTIC LED(S) |
|------------------------------------------------------------|
| LED | Status | Condition |
|------+---------+-------------------------------------------|
| L1 | On | Data is being transmitted or received |
|------+---------+-------------------------------------------|
| L1 | Off | Data is not being transmitted or received |
|------+---------+-------------------------------------------|
| L2 | On | Twisted pair network connection is good |
|------+---------+-------------------------------------------|
| L2 | Off | Twisted pair network connection is broken |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MISCELLANEOUS NOTES |
|------------------------------------------------------------|
| The interrupt request and cable type are set using the |
| software that comes with the card. |
+------------------------------------------------------------+