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# ADAPTEC, INC.
ACB-4525S4000, ACB-4525Z
+------------------------------------------------------------+
|------------------------------------------------------------|
| Data bus: | None (SCSI to ESDI interface) |
|--------------------------+---------------------------------|
| Size: | Drive card |
|--------------------------+---------------------------------|
| Hard drives supported: | SCSI to two RLL ESDI drives |
|--------------------------+---------------------------------|
| Floppy drives supported: | None |
+------------------------------------------------------------+
IMG IMG 1
A diagram for these Models was not available, the ACB-4000A is
pictured above.
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Function | Location |
|----------------------------------------------+-------------|
| 20-pin data cable connector-drive 0 | CN0 |
|----------------------------------------------+-------------|
| 20-pin data cable connector-drive 1 | CN1 |
|----------------------------------------------+-------------|
| 34-pin control cable connector-hard drive(s) | CN2 |
|----------------------------------------------+-------------|
| 4-pin connector-DC power | CN3 |
|----------------------------------------------+-------------|
| 50-pin SCSI connector-to host adapter | CN4 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SCSI ADDRESS |
|------------------------------------------------------------|
| SCSI ID | JP5/Jumper 1 | JP5/Jumper 2 | JP5/Jumper 3 |
|------------+---------------+---------------+---------------|
| | 0 | open | open | open |
|----+-------+---------------+---------------+---------------|
| | 1 | closed | open | open |
|----+-------+---------------+---------------+---------------|
| | 2 | open | closed | open |
|----+-------+---------------+---------------+---------------|
| | 3 | closed | closed | open |
|----+-------+---------------+---------------+---------------|
| | 4 | open | open | closed |
|----+-------+---------------+---------------+---------------|
| | 5 | closed | open | closed |
|----+-------+---------------+---------------+---------------|
| | 6 | open | closed | closed |
|----+-------+---------------+---------------+---------------|
| » | 7 | closed | closed | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Location | Setting |
|-----------------------------------+--------------+---------|
| » | Not used | JP2 | N/A |
|---+-------------------------------+--------------+---------|
| » | Provides a protocol | JP5/jumper 4 | closed |
| | compatible with ACB-5500 and | | |
| | ACB-4000 families of | | |
| | controllers (4525S4000 only) | | |
|---+-------------------------------+--------------+---------|
| | Does not allow for | JP5/jumper 4 | open |
| | compatibility with ACB-5500 | | |
| | | | |
| | and ACB-4000 controllers | | |
| | (4525S4000 only) | | |
|---+-------------------------------+--------------+---------|
| » | Zero latency default enabled | JP5/jumper 4 | closed |
| | (4525Z only) | | |
|---+-------------------------------+--------------+---------|
| | Zero latency default disabled | JP5/jumper 4 | open |
| | (4525Z only) | | |
|---+-------------------------------+--------------+---------|
| » | Spindle motor starts on | JP5/jumper 5 | closed |
| | command | | |
|---+-------------------------------+--------------+---------|
| | Spindle motor starts on | JP5/jumper 5 | open |
| | power-up | | |
|---+-------------------------------+--------------+---------|
| » | SCSI unit attention disabled | JP5/jumper 6 | closed |
|---+-------------------------------+--------------+---------|
| | SCSI unit attention enabled | JP5/jumper 6 | open |
|---+-------------------------------+--------------+---------|
| » | SCSI parity check enabled | JP5/jumper 7 | closed |
|---+-------------------------------+--------------+---------|
| | SCSI parity check disabled | JP5/jumper 7 | open |
|---+-------------------------------+--------------+---------|
| » | Normal operation | JP5/jumper 8 | open |
|---+-------------------------------+--------------+---------|
| | Self-diagnostic enabled | JP5/jumper 8 | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MISCELLANEOUS TECHNICAL NOTES |
|------------------------------------------------------------|
| The function of JP1 is to determine the select technique |
| used to interface the host adapter. |
| |
| Soldering Pin-2 to Pin "P" allows for the "pulse" select |
| that is used by controllers designed to work with SCSI |
| hosts. Soldering Pin-2 to Pin "H" or "L" allows for the |
| "handshake" or "level" select signal used in accordance |
| with SCSI standards. |
| |
| Unit attention (JP5/6) is not supported if the JP5/4 |
| jumper is installed on the ACB-4525S4000. |
+------------------------------------------------------------+