M2266 Series Jumper Setting
Obsolete product information
M2266H, M2266S
PCA Layout
All configurations marked "*" are default settings.
With respect to the setting below;
- "short" means Jumper plug is set between specified pins.
- "open" means Jumper plug is removed from specified pins.
1. Terminal CN3, CN9
Same settings are assigned on the same pins of both CN3 and CN9.
Setting terminal: CN4, CN6, CN7, CN10
| SCSI ID | |||
|---|---|---|---|
| ID | 9-10 | 11-12 | 13-14 |
| 0 | OPEN | OPEN | OPEN |
| 1 | OPEN | OPEN | SHORT |
| 2 | OPEN | SHORT | OPEN |
| 3 | OPEN | SHORT | SHORT |
| 4 | SHORT | OPEN | OPEN |
| 5 | SHORT | OPEN | SHORT |
| 6 | SHORT | SHORT | OPEN |
| 7 * | SHORT | SHORT | SHORT |
Note:
The drive is shipped from the factory with the SCSI ID set to 7. But
the links are offset, this is done intentionally as it will enable the user
to configure the drive with enough shorting straps for any ID. It must be
remembered though that the host adapter normally takes ID 7 with all
peripheral devices using IDs 0 through to 6.
| 7-8 | SHORT * | Time monitoring is disabled |
| OPEN | Time monitoring is enabled | |
| 5-6 | SHORT * | Read-Ahead caching is enabled |
| OPEN | Read-Ahead caching is disabled | |
| 3-4 | SHORT * | reserved |
| 1-2 | SHORT * | Normal operational mode |
| OPEN | Diagnostic mode |
2. Connector CN7
Factory use only.
3. Connector CNH1
| LED display requirement | |
|---|---|
| 1-2 | SHORT * LED active when drive connected to bus |
| OPEN LED active when drive READY | |
| 3-4 | Factory use only. |
| 5-6 | Factory use only. |
| 7-8 | Factory use only. |
| 9-10 | Factory use only. |
| UNIT ATTENTION response | |
| 11-12 | SHORT * CHECK CONDITION posted |
| OPEN CHECK CONDITION not posted | |
| SCSI time monitoring | |
| 13-14 & 15-16 | SHORT * CHECK CONDITION posted |
| SHORT * SHORT * Unlimited 250ms, 128 retries | |
| SHORT OPEN 30 - 60 seconds 250ms, 10 retries | |
| OPEN SHORT 30 - 60 seconds 250ms, unlimited retries | |
| OPEN OPEN 1 - 2 seconds 1ms, 10 retries | |
4. Terminal CNH2
| SCSI level | |
|---|---|
| 1-2 | SHORT * SCSI-2 |
| OPEN SCSI-1/CCS | |
| Message mode | |
| 3-4 | SHORT * SAVE DATA POINTER is issued for disconnection |
| OPEN SAVA DATA POINTER is not issued for disconnection after data transfer | |
| Error report at MODE SELECT parameter rounding | |
| 5-6 | SHORT * CHECK CONDITION status not posted |
| OPEN CHECK CONDITION status (REDCOVERED ERROR) posted | |
| PER default value | |
| 7-8 | SHORT * 0 |
| OPEN 1 | |
| Motor start timing | |
| 9-10 | SHORT * Motor start on power up |
| OPEN Motor start via START/STOP UNIT command | |
| SCSI bus parity check | |
| 11-12 | SHORT * Executed by IDD |
| OPEN Not executed by IDD | |
| Synchronous mode transfer rate | |
| 13-14 | SHORT * CHECK CONDITION status not posted |
| SHORT * 1.2 to 4.0MB/s | |
| OPEN 1.2 to 2.67MB/s | |
| 15-16 | SHORT * Enabled |
| OPEN Disabled | |
5. Terminal CN3
There are no user changeable settings on this terminal.
6. Terminal CNH4
| SCSI Terminating Power | |||
|---|---|---|---|
| 1-2 | 3-4 | Function | |
| SHORT * | SHORT * | Power is supplied to the terminating resistor from the IDD and TERMPWR pin. Power is also supplied to the TERMPWR pin from the IDD. (Pin 26 of the interface) | |
| OPEN | SHORT | The TERMPWR pin is not used. Power is supplied to the IDD terminating resistor only from the IDD | |
| SHORT | OPEN | Power is not supplied to the terminating resistor from the IDD, only from the TERMPWR pin. | |
