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
29
Содержание DCAS-32160 - Ultrastar 2.1 GB Hard Drive
Страница 2: ......
Страница 14: ...xii OEM Spec of DCAS 34330 32160...
Страница 16: ...2 OEM Spec of DCAS 34330 32160...
Страница 18: ...4 OEM Spec of DCAS 34330 32160...
Страница 19: ...Part 1 Functional Specification Copyright IBM Corp 1996 5...
Страница 20: ...6 OEM Spec of DCAS 34330 32160...
Страница 22: ...8 OEM Spec of DCAS 34330 32160...
Страница 32: ...18 OEM Spec of DCAS 34330 32160...
Страница 34: ...20 OEM Spec of DCAS 34330 32160...
Страница 56: ...6 7 1 2 68 pin Model Figure 35 Outline of 68 pin Model 42 OEM Spec of DCAS 34330 32160...
Страница 57: ...6 7 1 3 80 pin Model Figure 36 Outline of 80 pin Model Specification 43...
Страница 59: ...6 7 3 Interface Connector 6 7 3 1 50 pin Model Figure 39 Interface Connector 50 pin Model Specification 45...
Страница 60: ...6 7 3 2 68 pin Model Figure 40 Interface Connector 68 pin Model 46 OEM Spec of DCAS 34330 32160...
Страница 61: ...6 7 3 3 80 pin Model Figure 41 Interface Connector 80 pin Model Specification 47...
Страница 62: ...6 7 4 Mounting Positions and Tappings Figure 42 Mounting Positions and Tappings 48 OEM Spec of DCAS 34330 32160...
Страница 70: ...56 OEM Spec of DCAS 34330 32160...
Страница 71: ...Part 2 SCSI Interface Specification Copyright IBM Corp 1996 57...
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Страница 232: ...IBML Part Number 73H7993 Published in Japan S73H 7993 03...