SEAGATE TECHNOLOGY, INC. Customer Technical Support FAX Network +1 408 438-8137 Customer Technical Support Bulletin Boards (300-9600, 8-N-1) 旼컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컫컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴커 � United States +1 408 438-8771 � United Kingdom +44 628 478011 � 쳐컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑 � Germany +49 89 140-9331 � Singapore +65 227-2217 � 읕컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컨컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴켸 (C)opyright 1991 ST-3500A AT Interface J5 Drive ID Select and � � J6 (located on side Configuration Select Header� � near rear) 컴컴컴컴컴컴컴컴컴컴컴쩡컴켸 읕컴컴컴컴컫컴컴컴컴� � o o o1 � +5v ---o o o 40-pin I/O Cable Connector � 袴袴袴袴 郞袴袴袴袴袴袴袴袴袴拷 o o o o o1 1 2 3 J1�::::::::::�::::::::1� /컴컴컴컴�\ o o o o o Remote LED쵬 � 윱Reserved 賈袴袴袴袴袴佶袴袴袴袴鳩� 0 0 0 0 넌袴袴袴袴袴 Connection� 읕캑Jumper (pin 20 missing for 읕5횳횳�12� (see below)커 픐osition keying purposes) DC Power 旼컴컴컴켸 � 旼J5컴컴컴컴컴컴컴컴컨컴컴컴컴컴컴� � 旼� 旼� 旼� 1 � � 쿽� o-C큢홂큢홄-o � � 쿽혾-o 쿽� 쿽� o � � 퓾� 픁� 픃� H � � 袴袴袴袴袴袴袴袴袴袴袴袴袴 � 읕횯efaults shown in solid lines컴� J5 Jumper Funtion Description (* indicates default) 컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴 A B (A=vertical, pins 9 & 10; B=horizontal, pins 8 & 10) OFF OFF Drive is the slave (Drive 1). OFF ON Drive is the master (Drive 0) with slave (Drive 1) present. ON* OFF Drive s the master (Drive 0). C (C=horizontal, pins 5 & 7) ON Slave (Drive 1) Present is connected to J1 pin 39. Jumpers "D" or "E" cannot be installed if jumper "C" is installed. D (D=vertical, pins 5 & 6) ON* DASP- is connected to J1 pin 39. Jumpers "C", "D", "F", or "G" cannot be installed if jumper "E" is installed. OFF REFSIG is not connected to J1 pin 39. E (E=horizontal, pins 3 & 5) ON REFSIG is connected to J1 pin 39. Jumpers "C", "D", "F", or "G" cannot be installed if jumper "E" is installed. OFF REFSIG is not connected to J1 pin 39. F (F=vertical, pins 3 & 4) ON* No external reference for REFSIG. Jumpers "E", "G", or "H" cannot be installed if jumper "F" is installed. OFF This location provides a port for external connection of the synchronized spindle reference signal (pin 3) and ground (pin 4). G (G=horizontal, pins 1 & 3) ON REFSIG is connected to J1 pin 28. Jumpers "E" or "F" cannot be installed if jumper "G" is installed. OFF REFSIG is not connected to J1 pin 28. H (H=vertical, pins 1 & 2) ON Drive implements "CSEL" (Cable Select line in I/O connector) feature. Implementation not defined yet. Jumpers A and B not used if jumper H is on. (This jumper is mutually exclusive with jumper "G"). OFF* Drive select is based on use of jumper A or B. J6 Jumper Funtion Description (2x3 jumper block) ------------------------------------------------- 1 Remote LED connection. Pin 6 is connected to +5v through a 147 ohm resistor. Pin 5 is the LED driver. 2 Reserved jumper position. 3 Reserved jumper position. ST-3500A UNFORMATTED CAPACITY (MB) ________________502 FORMATTED CAPACITY (xx SECTORS) (MB) _____426 ACTUATOR TYPE ____________________________VOICE COIL TRACKS ___________________________________10,829 CYLINDERS __PHYSICAL______________________1,547 (user) HEADS ______PHYSICAL______________________7 DISCS (3.5 in) ___________________________4 MEDIA TYPE _______________________________THIN FILM RECORDING METHOD _________________________ZBR RLL (1,7) TRANSFER RATE INTERNAL (mbits/sec)________21.6 to 36 SPINDLE SPEED (RPM) ______________________4,535 AVERAGE LATENCY (mSEC) ___________________6.61 BUFFER ___________________________________256 KByte SeaCache Prefetch, Multi-Segmented INTERFACE ________________________________AT BUS SECTORS PER DRIVE ________________________ TPI (TRACKS PER INCH) ____________________2150 AVERAGE ACCESS (ms) (read/write)__________9.9/10.6 SINGLE TRACK SEEK (ms) ___________________2 MAX FULL SEEK (ms) _______________________21.5 MTBF (power-on hours) ____________________200,000 POWER REQUIREMENTS: +12V START-UP (amps) _1.5 +12V TYPICAL (amps) __0.4 +5V TYPICAL (amps) ___0.2 TYPICAL (watts) ______5 WRITE PRECOMP (cyl) ______________________N/A REDUCED WRITE CURRENT (cyl) ______________N/A LANDING ZONE (cyl) _______________________AUTO PARK IBM AT DRIVE TYPE ________________________* Physical: Height (inches/mm): 1.00/25.4 Width (inches/mm): 4.00/101.6 Depth (inches/mm): 5.75/146.1 Weight (lbs/kg): 1.8/0.80 * MAY REQUIRE FORMATTING AND PARTITIONING SOFTWARE. ALSO, CHECK TO SEE IF YOUR CMOS SETUP HAS A "CUSTOM" OR "USER DEFINABLE" DRIVE TYPE AVAILABLE. (see below) Possible translation: 895 cyl, 15 heads, 62 sectors = 426,163,200 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. Seagate reserves the right to change, without notice, product offerings or specifications. (10/12/92)