SEAGATE TECHNOLOGY, INC.
Customer Technical Support FAX Network +1 408 438-8137
Customer Technical Support Bulletin Boards (300-9600, 8-N-1)
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� United States +1 408 438-8771 � United Kingdom +44 628 478011 �
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� Germany +49 89 140-9331 � Singapore +65 227-2217 �
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(C)opyright 1991
ST-1239A (94354-239 or 230) Swift AT (IDE)
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� 0 � 5
� 0 � G �Ŀ Some have
� 0 � G AT (IDE) Cable � �� these pins
� 0 � 12 1�........................� o o o o o(o o) 6 is OFF
����/ ........................ o o o o o(o o) 7 is ON
�������P�W�A�������������������������������������������
1 2 3 4 5 6 7
ON OFF � � � � � ���
1 Slave Master ��� � � � � �
2 5 Heads 7/9 Heads ����� � � � �
3 Slave installed Slave not inst. ������� � � �
4 7 byte ECC 4 byte ECC ��������� � �
5 Factory test Normal Oper. ����������� �
6/7 Some PWA's have these pins, factory use ��������
SWIFT Shrouded AT Interface Connector Only
����\
� 0 � 5 �� If the AT Connector has a plastic shroud, note pin-1
� 0 � G � � Pin-20 missing for keying purposes
� 0 � G � �
� 0 � 12 �������������������� o o o . o o
����/ �:::::::::�:::::::::1� o o o . o o (Note: 8-pin jumper
����P�W�A���������������������������������������� block on side of
1 2 3 4 5 6 drive for factory
ON OFF � � � � � � use only.)
1 Slave Master ��� � � � � �
2 Slave installed Slave not inst. ����� � � � �
3 SPSYNC (spindle sync) on Pin-28 ���������� � � �
4 (pins removed) ����������������������������� � �
5 Spare ���������������������������������������� �
6 SPSYNC External Connection ���������������������
ST-1239A
94354-239 or 230 Swift
UNFORMATTED CAPACITY (MB) ________________239
FORMATTED CAPACITY (36 SECTORS) (MB) _____211
ACTUATOR TYPE ____________________________VOICE COIL
TRACKS ___________________________________11,448
CYLINDERS ________________________________1,272
HEADS ____________________________________9
DISCS ____________________________________5
MEDIA TYPE _______________________________THIN FILM
RECORDING METHOD _________________________RLL (2,7)
TRANSFER RATE (mbytes/sec) _______________1.25
SPINDLE SPEED (RPM) ______________________3,600
AVERAGE LATENCY (mSEC) ___________________8.33
BUFFER ___________________________________32 or 64 Kbyte
Read Look-Ahead, Non-Adaptive,
Single-Segmented
INTERFACE ________________________________AT BUS
SECTORS PER DRIVE ________________________412,128
TPI (TRACKS PER INCH) ____________________1,543
BPI (BITS PER INCH) ______________________28,103
AVERAGE ACCESS (ms) ______________________15
SINGLE TRACK SEEK (ms) ___________________4
MAX FULL SEEK (ms) _______________________35
MTBF (power-on hours) ____________________150,000
POWER REQUIREMENTS: +12V START-UP (amps) _2.5
+12V TYPICAL (amps) __0.7
+5V START-UP (amps) __0.75
+5V TYPICAL (amps) ___0.4
TYPICAL (watts) ______11
MAXIMUM (watts) ______33.75
BUFFERED STEP PULSE RATE (micro sec) _____6-200
WRITE PRECOMP (cyl) ______________________N/A
REDUCED WRITE CURRENT (cyl) ______________N/A
LANDING ZONE (cyl) _______________________AUTO PARK
IBM AT DRIVE TYPE ________________________*
* MAY REQUIRE FORMATTING AND PARTITIONING SOFTWARE. ALSO, CHECK TO
SEE IF YOUR CMOS SETUP HAS A "CUSTOM" OR "USER DEFINABLE" DRIVE TYPE
AVAILABLE.
Possible Translation: 954 cyl, 12 heads, 36 sectors = 211,009,536
Possible Translation: 817 cyl, 14 heads, 36 sectors = 210,825,216
Possible Translation: 990 cyl, 16 heads, 26 sectors = 210,862,080
Note: A "custom" or "user-definded" CMOS drivetype may ask for a
numerical value for the Write Precompensation cylinder and for the
Landing Zone cylinder. A basic rule-of-thumb for drive models that do
not require the old Write Precomp technique or a Landing Zone because
they are Auto-Parking is to add 1 to the cylinder value being used. As
an example: If cylinders equaled 820, then both Write Precomp and
Landing Zone would be entered as 821. Some BIOS will convert this to
65535 or -1, which are functionally equivalent to "none (not used)".
PHYSICAL/LOGICAL equivalent to NATIVE/TRANSLATION
Already low-level formatted at the factory.
Since a User-definable or Custom translation geometry may be used, it
is imperative that the values be written down and kept with your
permanent records for retrieval in the event of CMOS battery failure.
Swift Remote LED Option
Front View of Drive Without the Plastic Bezel
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� A � B � B = Anode
�������Ĵ D = Cathode
� C � D �
...�������������������������������P�W�A���...
� Default jumper at C-D for LED mounted on drive PWA
� To use remote LED, remove jumper and extend B (Anode)
and D (Cathode).
� Swift LED kit 75912397 allows connection to a remote LED
� Swift LED kit 95913369 has an LED for attachment to the
system front bezel or a 5.25-inch frame kit
Seagate reserves the right to change, without notice, product
offerings or specifications. (6/26/90)
