IBM 3.5-Inch 4.5GB and 9.1 GB Wide UltraSCSI Hard Disk Drive
The drive is shipped with four jumpers already on the jumper block.
These jumpers are the only ones you need to configure the drive for an IBM system.
Jumper options SCSI ID (address) pins
Note: In the address determination tables, 'off' means
jumper is not in place and 'on' means jumper is in place.
50 pin model SCSI ID (address) pins
-DSA2 -DSA1 -DSA0
JP2 JP3 JP4 Device ID
-----------------------------------------------
off off off 0
off off on 1
off on off 2
off on on 3
on off off 4
on off on 5
on on off 6 *
on on on 7
* Shipping default ID
68 and 80 pin model SCSI ID (address) pins
-DSA3 -DSA2 -DSA1 -DSA0
JP1 JP2 JP3 JP4 Device ID
-------------------------------------------------
off off off off 0*
off off off on 1
off off on off 2
off off on on 3
off on off off 4
off on off on 5
off on on off 6**
off on on on 7
on off off off 8
on off off on 9
on off on off 10
on off on on 11
on on off off 12
on on off on 13
on on on off 14
on on on on 15
*Shipping default ID for 80 pin drive<br>
**Shipping default ID for 68 pin drive
Enable auto spin up (JP5)
This jumper controls how the drive starts when power is applied. If the
jumper is NOT installed then the file will spin up automatically after
power-on reset.
If the jumper IS installed the file will NOT spin up
unless the host system issues a 'START UNIT' command to the file.
SCSI terminator on (JP6)
When this jumpers is installed, the on-card SCSI bus terminator is
enabled. There is no terminator on the 80-pin model
Unit attention disable (JP7)
When this jumper is installed the drive will not generate a unit
attention following a power on reset (POR) or SCSI bus reset.
Any pending unit attention conditions will also be cleared at POR
or SCSI bus reset.
Enable TI-SDTR/Enable TI-SDTR/WDTR (JP8)
When the jumper is installed the drive will initiate synchronous data
transfer speed negotiation (50,68 & 80 pin) and initiate wide data
transfer request (68 & 80 pin) following a SCSI bus reset or power on
event.
Auto start delay and delay start (JP9,JP10)
The auto start delay and delay start pins control when and how the drive
can spin up, with the combination of auto spin up option (JP5).
When in auto spin up and start delay mode the drive start will be
delayed by a period of time multiplied by its own SCSI address.
If auto spin up is disabled, these jumpers will be ignored.
Disable Auto Auto
auto start start
spin up delay delay
6/12
JP5 JP9 JP10 Option
-------------------------------------------------------
on don't don't Drive will NOT spin up
care care requires start command
-------------------------------------------------------
off off off Spin up immediately
after POR
-------------------------------------------------------
off on off Spin up six seconds
multiplied by SCSI
address after POR
-------------------------------------------------------
off on on Spin up twelve seconds
multiplied by SCSI
address after POR
-------------------------------------------------------
Disable SCSI parity (JP11)
When this jumper is installed, the drive's SCSI parity checking is
disabled.
External activity (LED) pins (JP12)
The LED pins can be used to drive an external light emitting diode.
Up to 8mA of sink current capability is provided.
The LED anode must be tied to the current limited +5V source provided
on pin # 1 of the option jumper block.
The LED cathode is then connected to the pin # 2 to complete the circuit.
Default setting
The default jumper setting at shipment is as follows.
Jumpers installed on 50 and 68 pin models.
JP2 & JP3 SCSI address #6
JP6 SCSI terminator enabled
SCSI signal connector
The SCSI signal connector is a 50 pin connector meeting the ANSI SCSI
specification. The SCSI SCA-80 pin connector conforms to SFF 8046.
NOTE: It is intended that the hard disk drive should
only be in electrical contact with the chassis of the system
at a designated set of mounting holes. Other electrical contact may
degrade error rate performance. As a result of this it is recommended
that there should be no metal contact to the hard disk drive except at
the mounting holes or the side rails into which the mounting holes
are tapped.
To correctly place the jumpers:
You must purchase a pin converter (IBM P/N 01K1326) to use the new 68-pin drive in IBM systems
cabled for 50-pin devices. This pin converter is 'keyed', that is, it fits only one way, ensuring
correct cable connections. After installation of the pin converter, the drive will run in the
SCSI 8-bit mode, and its maximum burst data transfer rate is reduced to be compatible with the
highest capability of the cable and the controller.
Please see the LEGAL - Trademark notice.
Feel free - send a for any BUG on this page found - Thank you.