Ultrastar XP
Jumper settings
Models: DFMS-Sxx
Option jumper blocks
DFMS models contain a jumper block that can be used to enable certain features
and select the SCSI ID of the drive. This jumper block is referred to as the
'front' option jumper block due to it's location on the drive (opposite the SCSI
connector).
Jumper pin locations (front view) - all models
This jumper block varies in pin definition based on interface type (50, 68,
differential, SCA).
The option block connector (2 x 16) used on 50 pin models is an AMP connector
(PN 84156-4) having a pin spacing of 2mm.
The option block connector (2 x 16) used on the 68 and 80 pin models is an
AMP connector (PN 84156-5) having a pin spacing of 2mm.
50/68 pin model single-ended
Pin
1 SCSI ID 3 68 pin only 16 Slave Sync
3 SCSI ID 2 17 External Activity LED
5 SCSI ID 1 18 +5V
7 SCSI ID 0 19 Write Protect
9 Blank 21 Auto Start Delay
10 Unused 23 Option Block Mode
11 Auto Start 25 Disable T.I. Sync Negotiations
13 +5V 27 Disable SCSI Parity
14 Enabled Active Termination 29 Disable Unit Attention
15 Master Sync 31 Customizing
Note: pins 2,4,6,8,12,20,22,24,26,28,30 and 32 are ground.
50/68 pin model differential
Pin
1 SCSI ID 3 68 pin only 16 Slave Sync
3 SCSI ID 2 17 External Activity LED
5 SCSI ID 1 18 +5V
7 SCSI ID 0 19 Write Protect
9 Blank 21 Auto Start Delay
10 Unused 23 Option Block Mode
11 Auto Start 25 Disable T.I. Sync Negotiations
13 +5V 27 Disable SCSI Parity
14 Unused* 29 Disable Unit Attention
15 Master Sync 31 Customizing
* Pin 13 is Enable Narrow Mode on 80 Pin SCA and 68 pin differential
Pin 14 is Ground on 80 Pin SCA and 68 pin differential
Note: Pins 2,4,6,8,12,20,22,24,26,28,30 and 32 are Ground.
68 Pin auxiliary connector
Pin
1 SCSI ID 0 7 SCSI ID 3
2 Unused 8 External Activity LED
3 SCSI ID 1 9 Enable Active Termination
4 Auto Spin Start 10 Ground
5 SCSI ID 2 11 +5V
6 Slave Sync 12 Write Protect
68 Pin auxiliary connector
The 68 pin models contain an 'Auxiliary' connector that replicates some of
the functions contained in the front option jumper block. The auxiliary
connector signal definition conforms to the SCSI document SFF-8009 Rev 2 with
the following exceptions:
- External fault (XTFALT-) is not supported on pin 2.
- Auto spin start was chosen as the 'vendor unique' signal assignment (on
pin 4.) (This signal is an input to the drive. The SCSI spec (SCSI
SFF-8009) specifies this pin as an output.) This signal should be useful
for those applications that want to 'auto-start' the drive based on
location dependent SCSI ID.
- The pin should be handled in one of the following ways:
- tied to ground (auto spin start enabled)
- allowed to 'float' (no connection)
- driven with an open collector driver (>1mA sink capability)
Refer to auxiliary connector diagram above.
SCSI ID (address) pins
Note: In the address determination tables, 'off' means jumper is not in
place and 'on' means jumper is in place.
Address determination--68 and 80 pin models
Bit 0 Bit 1 Bit 2 Bit 3 Address
----- ----- ----- ----- -------
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
Address determination of 50 pin models
Bit 2 Bit 1 Bit 0 Address
----- ----- ----- -------
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
Auto start (&delay) pins
The auto start and auto start delay pins control when and how the drive can
spin up and come ready. When configured for auto-startup, the motor spins up
after power is applied without the need of a SCSI start unit command. For no
auto-start, a SCSI Start Unit command is required to make the drive spin and be
ready for media access operations. When in auto-start mode, the drive will delay
its start time by a period of time multiplied by its own SCSI address.
Auto-startup modes selectable by auto-start/delay pin combinations
Pins (50 and 68
interface pin models) Drive Behavior
Auto Start Auto Start Auto Startup Delay(sec)
Delay Mode? Multiplier
off off No N/A
off on Yes 0
on off Yes 10
on on Yes 4
Auto-Startup Modes selectable by auto-start/delay pin combinations
Pins
(80 interface pin models) Drive Behavior
Auto Start Auto Start Auto Startup Delay(sec)
Delay Mode? Multiplier
off off YES 0
off on NO N/A
on off YES 10
on on NO N/A
External activity (LED) pins
The LED pins can be used to drive an external drive light emitting diode.
Please refer to the LED pin section of the DFMS interface Specification for a
detailed functional description of this pin.
Up to 33 mA (plus or minus 5%) of TTL level LED drive capability is provided.
Current limiting for the LED is provided on the electronics card. The LED anode
may be tied to the +5V source provided on pin 18 of the front option jumper
block, pin 11 of the auxiliary connector on the 68 pin unitized connector or the
5V power source on the 80 pin SCA model. The LED cathode is then connected to
the external activity pin to complete the circuit.
Note: This set of pins can be used to drive an LED located in a
bezel connected to the front of the drive or to an external LED in systems where
the front of the drive cannot be easily seen.
Note: 68 pin and 80 pin SCA SCSI models have two sets of pins, a set
on the front and a set on the back, that are connected to the same LED driver
circuit. The combined drive capability is stated above.
Write protect pins
If the write protect pin is jumpered to ground, the drive will prohibit SCSI
commands that alter the customer data area portion of the media from being
performed. The state of this pin is monitored on a per command basis. See the
DFMS interface specification for functional details.
Option block mode pin
The option block mode pin is used to modify the function of the front option
jumper block. When the option block mode pin is not grounded the pin function of
the front option jumper block will be as defined by the upper portion of the
referenced figures. When the option block mode pin is grounded the pins (25, 27,
29, 31) will be redefined to control what is referred to as 'alternate
mode."
"Alternate mode" allows tailoring of SCSI options such as
"boot up" characteristics and other operational features on a per
customer basis.
Please contact support for functional details on the
customization of function allowed by this mode.
The state of these pins immediately after power is applied to the drive will
determine their function.
Disable T.I. sync. negotiation pins
If a disable target initiated synchronous negotiation pin is grounded then an
Initiator is required to start a negotiation handshake if synchronous and/or
'wide' (double byte) SCSI transfers are desired. Please refer to the DFMS
interface specification for more details on this feature.
Disable SCSI parity pin
Grounding this pin will disable SCSI parity checking.
Disable unit attention pin
Grounding this pin will disable the drive from building unit attention sense
information for commands immediately following a power on reset (POR) or SCSI
bus reset. Any pending unit attention conditions will also be cleared at POR or
SCSI reset times.
Customizing pin
The customizing pin is currently reserved for future use.
Enable narrow mode
Jumpering pin 14 to pin 13 will cause the 68 pin differential or the 80 pin
SCA to operate in a single byte mode. The drive will not negotiate for 'wide'
(double byte) operation. The drive will terminate the unused upper byte and
upper byte parity on the SCSI Bus.
Enable active termination
Upon request, single ended 50 and 68 pin models are available with on card
SCSI bus active terminators. (please contact support
for the appropriate card PN.)
For those cards having the active termination feature, this function can be
enabled by installing a jumper between pins 13 and 14 of the front option jumper
block or connecting pins 9 and 11 of the auxiliary connector on 68 SCSI pin
models.
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