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- SEAGATE TECHNOLOGY, INC.
- Customer Technical Support FAX Network +1 408 438-8137
- Customer Technical Support Bulletin Boards (300-9600, 8-N-1)
- ┌──────────────────────────────────┬─────────────────────────────────┐
- │ United States +1 408 438-8771 │ United Kingdom +44 628 478011 │
- ├──────────────────────────────────┼─────────────────────────────────┤
- │ Germany +49 89 140-9331 │ Singapore +65 227-2217 │
- └──────────────────────────────────┴─────────────────────────────────┘
- (C)opyright 1991
-
-
-
- ST-1401A AT Interface
-
- NOTE: This figure and the following description of each jumper position
- is only valid on drives that have J6 with 4 pins (2x2).-->┐
- │
- J5 Drive ID Select and │ │ J6 (located on side
- Configuration Select Header│ │ near rear)
- ──────────────────────┬────┘ └──────────┬─────────
- │ o o1
- 40-pin I/O Cable Connector │ +5v ---o o
- ╒════════════════════╕ o o o o o1 ══════
- J4│::::::::::∙::::::::1│ /─────────\ o o o o o │ │
- ═╧══════════╤═════════╧═│ 0 0 0 0 │═E═D═C═B═A═ Remote LED│┘ └│Reserved
- (pin 20 missing for └─5─G─G─12┘ (see below) Connection│ │Jumper
- keying purposes) DC Power │Position
-
- J5
- JUMPER | FUNCTION:
- A REFSIG: This location provides a port for external connection
- of the synchronized spindle reference signal (pin-1) and ground
- (pin-2). The reference signal is bi-directional, single-ended, and
- terminated without an external resistor. It is also available on J4
- pin-28 if the factory jumper is installed. The drive will
- self-determine if it is a master of slave for spindle synchronization.
-
- B HOST SLV/ACT: When this shunt is installed, -SLAVE PRESENT
- (provided by the output of a 74HCT14) is applied to J4 pin-39 for
- systems that require this signal from the Master drive. If jumper "B"
- is installed, then jumper "E" must not be installed.
-
- C MASTER: When this shunt is installed, the drive is configured
- as the Master. When not installed, the drive is a Slave.
-
- D SLAVE PRESENT: When installed, this shunt indicates to the
- Master drive that a Slave is present. This shunt must be installed on
- the Master drive in a two-drive system.
-
- E ACTIVE: When this shunt is installed, DASP- is made present on
- J4 pin-39. If "E" is installed, then "B" must not be installed.
-
- ======================================
-
- NOTE: This figure and the following description of each jumper position
- is only valid on drives that have J6 with 6 pins (2x3).-->┐
- │
- J5 Drive ID Select and │ │ J6 (located on side
- Configuration Select Header│ │ near rear)
- ──────────────────────┬────┘ └──────────┬─────────
- │ o o o1
- │ +5v ---o o o
- 40-pin I/O Cable Connector │ ════════
- ╒════════════════════╕ o o o o o1 1 2 3
- J4│::::::::::∙::::::::1│ /─────────\ o o o o o Remote LED├┘ │ └┤Reserved
- ═╧══════════╤═════════╧═│ 0 0 0 0 │═══════════ Connection┘ │ │Jumper
- (pin 20 missing for └─5─G─G─12┘ (see below)─┐ │ └Position
- keying purposes) DC Power ┌────────┘ ATA mode ──┘
- │
- ┌─J5─────────────────┴────────────┐
- │ ┌─┐ ┌─┐ ┌─┐ 1 │
- │ │o│ o-C┤o├E┤o├G-o │
- │ │o├B-o │o│ │o│ o │
- │ └A┘ └D┘ └F┘ │
- │ ══════════════════════════ │
- └──Defaults shown in solid lines──┘
-
- J5 Jumper Funtion Description
- -------------------------------
- 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 J4 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 J4 pin 39. Jumpers "C", "D", "F", or
- "G" cannot be installed if jumper "E" is installed.
-
- OFF REFSIG is not connected to J4 pin 39.
-
- E (E=horizontal, pins 3 & 5)
- ON REFSIG is connected to J4 pin 39. Jumpers "C", "D", "F",
- or "G" cannot be installed if jumper "E" is installed.
-
- OFF REFSIG is not connected to J4 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 J4 pin 28. Jumpers "E" or "F" cannot
- be installed if jumper "G" is installed.
-
- OFF REFSIG is not connected to J4 pin 28.
-
- 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 ATA mode. When the jumper is ON, IORDY is not connected to
- J4, DMACK- is connected to J4 pin 27, and DMARQ is
- connected to J4 pin 29. When the jumper is OFF, IORDY is
- connected to J4 pin 27, DMACK- is connected to J4 pin 29,
- and DMARQ is connected to J4 pin 21.
-
- 3 Reserved jumper position.
-
-
- ST - 1401A
-
- UNFORMATTED CAPACITY (MB) ________________395.7
- FORMATTED CAPACITY (xx SECTORS) (MB) _____343.7*
- AVERAGE SECTORS PER TRACK ________________65 (rounded down)
- ACTUATOR TYPE ____________________________VOICE COIL
- TRACKS ___________________________________10,188
- CYLINDERS ________________________________1,132
- HEADS ____________________________________9
- DISCS ____________________________________5
- MEDIA TYPE _______________________________THIN FILM
- RECORDING METHOD _________________________ZBR RLL (1,7)
- INTERNAL TRANSFER RATE (mbits/sec) _______20 to 25
- SPINDLE SPEED (RPM) ______________________4,412
- AVERAGE LATENCY (mSEC) ___________________6.8
- BUFFER ___________________________________64 Kbyte
- Read Look-Ahead, Non-Adaptive,
- Multi-Segmented Cache
- INTERFACE ________________________________AT
- BYTES PER TRACK __________________________38,803 avg.
- TPI (TRACKS PER INCH) ____________________1,760
- BPI (BITS PER INCH) ______________________
- AVERAGE ACCESS (ms) ______________________12
- SINGLE TRACK SEEK (ms) ___________________2.5
- MAX FULL SEEK (ms) _______________________24
- MTBF (power-on hours) ____________________150,000
- POWER REQUIREMENTS: +12V START-UP (amps) _2.5
- +12V TYPICAL (amps) __0.54
- +5V TYPICAL (amps) ___0.53
- TYPICAL (watts) ______8
- MAXIMUM (watts) ______15
- WRITE PRECOMP (cyl) ______________________N/A
- REDUCED WRITE CURRENT (cyl) ______________N/A
- LANDING ZONE (cyl)________________________AUTO PARK
- IBM AT DRIVE TYPE ________________________**
-
- Possible translation: 726 cyl, 15 heads, 61 sectors = 340,116,480
-
- 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)".
-
- * Two spare sector per cyliner, two spare cylinders per drive.
-
- ** 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)
-
- PHYSICAL/LOGICAL equivalent to NATIVE/TRANSLATION
- ZBR = Zone Bit Recording = Variable sectors per track
-
- 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. (4/12/91)