IBM DCAS-32160 - Ultrastar 2.1 GB Hard Drive, Specifications

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6.2.1 Jumper Signal Description
Throughout this paragraph O N means a shunt jumper is installed and O F F means that no shunt jumper is
installed.
6.2.1.1 Device address select lines. (-DAS0, -DAS1, -DAS2, -DAS3)
These four lines defines DCAS-3xxxx device ID on the SCSI BUS. -DAS0 is the least significant bit and
-DAS3 is the most significant bit. Device ID is defined as follows.
Ä
D A S 3
Ä
D A S 2
Ä
D A S 1
Ä
D A S 0
P o s i t i o n #
ÄÄ
> ( 1 ) ( 2 ) ( 3 ) ( 4 ) D e v i c e I D
ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ
o f f o f f o f f o f f 0 <
ÄÄÄ
S h i p p i n g
o f f o f f o f f o n 1 d e f a u l t
o f f o f f o n o f f 2 o f
o f f o f f o n o n 3 8 0
Ä
p i n
o f f o n o f f o f f 4
o f f o n o f f o n 5
o f f o n o n o f f 6 <
ÄÄÄ
S h i p p i n g
o f f o n o n o n 7 d e f a u l t
o n o f f o f f o f f 8 o f
o n o f f o f f o n 9 5 0
Ä
p i n / 6 8
Ä
p i n
o n o f f o n o f f 1 0
o n o f f o n o n 1 1
o n o n o f f o f f 1 2
o n o n o f f o n 1 3
o n o n o n o f f 1 4
o n o n o n o n 1 5
N o t e : 5 0
Ä
p i n m o d e l d o e s n o t u s e
Ä
D A S 3 , a n d o n l y D e v i c e I D ' s 0 t h r o u g h 7
c a n b e a s s i g n e d .
Figure 21. SCSI Device I D
6.2.1.2 Disable Auto Spin up. (Position 5)
This input defines the drive auto spin up option. If the shunt jumper is not installed(OFF), the drive will
spin up automatically after power on reset. If the shunt jumper is installed,the drive will not spin up unless
the host system issues the "START COMMAND" to the drive.
Note : The drive may not spin up while SCSI Bus is disconnected and internal terminator is disabled.
6.2.1.3 SCSI Terminator ON (Position 6)
This position is effective only for 50-pin and 68-pin models.
When this pin is connected to signal ground or jumper on, the internal terminator works.
Note : The drive may not spin up while SCSI Bus is disconnected and internal terminator is disabled.
Specification
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