Hard Drive: SEAGATE: ST31274A FILEPRO STE 1278MB 3.5"/SL ATA2 FAST
S T 3 1 2 7 4 A F I L E P R O S T E SEAGATE
Native| Translation
------+-----+-----+-----
Form 3.5"/SLIMLINE Cylinders | 2479| 1024| 619
Capacity form/unform 1278/ MB Heads 6| 16| 16| 64
Seek time / track 12.0/ 3.0 ms Sector/track | 63| 63| 63
Controller IDE / ATA2 FAST/ENHA Precompensation
Cache/Buffer 256 KB SEGMENTED Landing Zone
Data transfer rate 4.500 MB/S int Bytes/Sector 512
16.700 MB/S ext PIO4
Recording method RLL 1/7 operating | non-operating
-------------+--------------
Supply voltage 5/12 V Temperature *C 5 55 | -40 60
Power: sleep 1.0 W Humidity % 8 80 | 8 80
standby 1.0 W Altitude km -0.061 3.048| 12.192
idle 3.9 W Shock g 5 | 76
seek 5.6 W Rotation RPM 4500
read/write 4.2 W Acoustic dBA 38
spin-up W ECC Bit ON THE FLY,REED SOLOMON
MTBF h 300000
Warranty Month
Lift/Lock/Park YES Certificates CSA,FCC,IEC380,IEC950,UL19...
Layout
CONNER CFA-425A/850A/1275A PRODUCT MANUAL P/N 32282-001, REV.A,1994
+---------------------------------------------------------+ | +-+ |XXJ4 | | |HDA |xx1 Power | | |Connector |XXJ2 | | | |XX | +-+ |XXI | |XXN | |XXT | |XXE | |XXR | |XXF | |XXA |+-+C/D |XXC || |ATA/ISA |XXE || |CS | 1 || | |XXJ6 |+-+ |XX Power +---------------------------------------------------------+ 1
Jumpers
CONNER CFA-425A/850A/1275A PRODUCT MANUAL P/N 32282-001,REV.A, 1994
Jumper Setting
==============
C/D Master/Slave Configuration
------------------------------
CLOSED Single Drive
CLOSED Master Drive
OPEN Slave Drive
A/C Master/Slave Protocol
-------------------------
CLOSED ATA/CAM master/slave mode
OPEN Conner master/slave mode
CS Cable Select
---------------
OPEN Cable select option disabled
CLOSED Cable select option enabled
NOTE
When using the CS option, the C/D jumper must be open.
Master/Slave Configuration
--------------------------
When two drives are daisy-chained on the host interface, one must be
designated at the master drive (C: drive) and one as the slave drive
(D: drive). Commands from the host are written in parallel to both
drives.
When the C/D jumper on the drive is closed, the drive will assume the
role of a master. When C/D is open, the drive will act as a slave. In
single-drive configurations, C/D must remain in the closed (master)
position.
To use the cable select option, remove the C/D jumper and place it on
C/S. The C/S option allows M/S configuration to be done by the host
cable.
For each command sent from the host, the DRV bit in the drive/head
register selects the master or the slave drive. When the DRV bit is
reset (0), the master drive is selected, and when the DRV bit is set
(1), the slave drive is selected.
Once the drives receive the command, only the drive with jumper C/D
set to the appropriate position will execute the command. For
example, if the DRV bit is set, only the slave drive (jumper C/D
open) will execute the command.
NOTE
If the command is a diagnostic command, both drives will execute the
command and the slave will report its status to the master via the
Host PDIAG signal.
Throughout this manual, drive selection always refers to the state of
the DRV bit and the position of the C/D jumper.
The drive supports two master/slave modes via the A/C jumper. When
A/C is open, ATA/CAM master/slave mode is selected. When A/C is
closed, Conner master/slave mode is selected.
Supported Master/Slave Modes
----------------------------
There are three different master/slave methods that Conner supports.
- ISA Original
- Conner
- ATA/CAM
Of these three methods, the drive supports all except ISA/Original
mode, with which it is compatible.
NOTE
The ATA/CAM master/slave method is not compatible with the other two
methods. The Conner mode is backward-compatible to the ISA Original
mode, but is not compatible with the other.
These three methods are explained in the following sections. For
signals followed by a ' ', activate means go low and deactivate means
go high.
ISA Original Master/Slave
-------------------------
The signals used for master/slave operation and determination are
Host DASP and Host PDIAG .
Host DASP can be used to:
- drive an activity LED
- indicate that the slave drive is present to the master
The Host PDIAG is used to indicate that the slave has passed
diagnostics both at power-on reset (POR) and when the diagnostic
command is issued.
At power-on time, the slave drive activates Host PDIAG and Host
DASP . Host PDIAG remains activated from POR until a diagnostic
command is issued by the host. Once a diagnostic is issued by the
host, the slave deactivates Host PDIAG until either:
- the slave successfully completes the diagnostic command
- the host issues a reset
There are no real timing constraints on Host PDIAG and Host DASP .
At POR, they are both activated within a second or two. When the
diagnostic command is issued by the host, the slave inactivates Host
PDIAG within 100-200 microseconds and is required to reactivate it
within 5 seconds (the only timing constraint) if it successfully
completes the command.
This scheme works fairly well except for two problems:
- There is no way to tell when the slave becomes ready. If the slave becomes ready much later than the master, the slave will miss any command that are issued before it goes not busy because the host only polls the master to see if the "controller" is ready.
- In a two-drive configuration, the Host DASP line is not available to drive a drive activity indicator.
In this mode of master/slave, master/slave re-configures with either
a hardware or software reset. A hardware reset is either a POR or
host reset.
This version of master/slave is present on generations 1, 2, and 3
of Conner drives.
Conner Master/Slave
-------------------
To remendy the problem of the host not knowing when the slave was
ready, Conner developed a backward-compatible solution, which we call
Conner Master/Slave.
In Conner Master/Slave, the use of the Host PDIAG signal has been
changed slightly during reset so that the slave will indicate when it
will go not busy. Its use in the diagnostic command has not been
changed.
During POR or any host reset, the slave drive activates Host PDIAG
within 1ms. The master drive waits slightly longer that 1 ms for
Host PDIAG to be activated before it determines that no slave is
present. The slave then deactivates Host PDIAG when it is ready. The
master waits:
- up to 14 seconds for the slave to deactivate Host PDIAG on either a POR or a host reset
- 450 ms for the slave to deactivate Host PDIAG on a host software reset
If the master times out, it goes not busy.
In this mode of master/slave, master/slave re-configures with either
a hardware or software reset. A hardware reset is either a Power On
Reset (POR) or host bus reset.
This solution was implemented in generations 4 and greater of Conner
drives.
ATA/CAM Master/Slave
--------------------
This industry-standard master/slave solution was developed by the CAM
shortly after the development of the Conner Master/Slave. The
polarity of Host PDIAG is opposite that of the Conner solution and
this is what makes this master/slave scheme incompatible with the
Conner scheme.
At power-on time, the slave deactivates Host PDIAG and then
activates Host DASP within 1 ms of either POR or host reset. Host
DASP activate indicates that a slave is present. The slave
activates Host PDIAG when it is ready to accept commands or after 30
seconds. The drive will inactivate Host DASP when it receives the
first command or after 30 seconds,, whichever occurs first. This
period is reduced to 450ms for a software reset. A hardware reset is
either a POR or host bus reset.
This solution was implemented in generations 4.5 and greater of
Conner drives and is selectable with the A/C jumper or the CAM bit in
the feature word.
Install
CONNER CFA/CFS-1275A QUICK REFERENCE GUIDE DEC. 94, REV. C
Notes on Installation
=====================
J6 Standard 4-pin Power Connector --------------------------------- +----------------------- | +-----J6-----+ +---- pin 1 +12V | | 1 2 3 4 | | 1 pin 2 GND | +------------+ +-- pin 3 GND +------------------ pin 4 +5V
J4 Optional 3-pin Power Connector --------------------------------- +------------------------------ | +---J4----+ +------------- pin 1 +5 V | | 3 2 1 | | 40 pin 2 +12V | +---------+ +-------------- pin 3 GND +----------------------------------
Mounting Holes
--------------
Side: 6-32 UNC-2B .16 max. insertion
Bottom: 6-32 UNC-2B .22 max. insertion
1024 Cylinders may have to be entered into the CMOS parameters unless
the drive is being used with a device driver, BIOS, or OS capable of
supporting extended cylinders or LBA.
Features
CONNER CFA-425A/850A/1275A PRODUCT MANUAL P/N 32282-001,REV.A, 1994
Overview of the Drives
----------------------
The Conner Filepro Advantage CFA425A/CFA850A and CFA1275A are high-
performance, low-profile hard disk drives that are designed to
operate with an IBM PC/AT or equivalent host computer system in
translate mode.
The drive provides these features:
- High performance rotary voice coil actuator with embedded servoing eliminate the need for T-cal
- 1/7 Run length limited code
- High shock resistance
- Sealed HDA
- Automatic actuator latch against inner stop upon power-down
- Microprocessor-controlled diagnostics routines that are auto- matically executed at start-up.
- 64/256/256KB (respectively) segmentable cache buffer
- Read Look Ahead and selectable Write Caching
- Automatic error correction and retries, ECC on the fly
- supports ATA Standard PIO Mode 4 and DMA Mode 2
- Block size 512 bytes
- supports both CHS and LBA addressing
- Allows daisy-chaining up to two drives on the AT interface
- Auto-Translate (Universal Translate)
- 4-byte ECC diagnostic check in read/write
The drive supports either of the following Master/Slave protocol
standards:
- ATA/CAM (AT Attachment/Common Access Method)
- ISA/Conner (Industrie-Standard Architecture)
Firmware
--------
The drive's firmware includes a command set which the host uses to
control the drive. The command set allows the host to request the
following types of actions:
- report drive status
- seek a specific point on the disk
- read and write data
Universal Translate Mode
------------------------
Conner has established a Universal Translate Mode which enables the
user to configure the drive in an AT environment to any cylinder,
head, and sector configuration desired. The translate configuration
is limited only by the maximum capacity of the drive. Upon initial
power up to the drive it will default to a configuration shown below:
Cylinders Heads Sectors
CFA425A 826 16 63
CFA850A 1652 16 63
CFA1275A 2479 16 63
After the drive is ready, the host system may issue INIT DRIVE PARMS
COMMAND (command code 91hex) to alter the translate configuration
(number of heads and number of sectors per track). The drive will
then:
- calculate the total number of available logical tracks based upon the entered sector and head values
- save the drive parameters in non-volatile memory for subsequent drive operations
Seek Times
----------
+----------------------------------+--------+
| track to track max. | 3 ms |
+----------------------------------+--------+
| Average msec. read | 11 |
| Average msec. write| 11.5 |
| Average msec. max. | 26 |
+----------------------------------+--------+
|Latency msec. avg. | 6.67 |
+----------------------------------+--------+
The timing is measured through the interface with the drive
operating at nominal DC input voltages. The timing also assumes
that:
- BIOS and PC system hardware dependency have been
subtracted from timing measurements.
The average seek time is determined by averaging the seek time
for a minimum of 1000 seeks of random length over the surface
of the disk.
Head Positioning Mechanism
--------------------------
The two read/write heads are supported by a mechanism coupled to a
rotary voice coil actuator.
Task File Interface Signal Connector Pin 28 ------------------------------------------- Pin 28 +Spindle Sync/Cable Select (I/O) The ATA specification allows this pin to be used for two optional functions:
- Spindle Sync is a signal used by the drives which are interconnect on the same cable to synchronize their spindle rotation with each other.
- Cable Select routes the C/D select to this spin. When set high, drive D: is selected; when set low, drive C: is selected. This function is enabled by placing a jumper on CS.
Error Correction
----------------
The drives use a Reed-Solomon code to perform error detection and
correction. For each 512-byte block, the software error correction
polynominal is capable of correcting:
- one error burst up to 22 bits
- two error burst up to 11 bits each
Single bursts of 11 bits or less are corrected on the fly (OTF) with
no performance degradation.
Execute Drive Diagnostic
------------------------
Command Number: 90 hex
Description
This command performs the internal diagnostic tests implemented by
the drive. The diagnostic tests are only executed upon receipt of
this command.
The drive sets BSY immediately upon of the command. If the drive is a
master, the drive performs the diagnostic tests and saves the
results. It then checks to see if a slave drive is present and waits
up to 5 seconds for the slave to complete its diagnostics. If the
slave successfully completes its diagostics, it asserts -HOST PDIAG.
If unsuccessful, the master drive resets BSY in the Status register
and generates an interrupt. The Error bit (ERR) is set in the Status
register and the Error register is updated.
The value in the Error register should be viewed as a unique 8-bit
code and not as the single-bit flags defined previously. The inter-
face registers are set to initial values except for the Error
register.
The table below details the codes in the Error register and a
corresponding explanation.
Error Code Description
01 hex No error detected
02 hex Format device error
03 hex Sector buffer error
8x hex Slave drive failed
Additional codes may be implemented at the manufacturer's option.
NOTE
If the slave drive fails diagnostics, the master drive shall "OR" 80
hex with its own status and load that code into the Error register.
If the slave drive passes diaagnostics or there is no slave drive
connected, the master drive shall sect bit 7 of the Error register
Task File to 0.
Reliability
-----------
MTBF 300,000 hours POH
MTTR 10 minutes typical
Preventive Maintenance None
Component Design Life 5 years
Start/Stop Cycles 40,000 minimum
Safety Standard
---------------
The drive is designed to comply with relevant product safety
standards, including:
- UL 478, 5th edition, Standard for Safety of Information Processing and Business Equipment, and UL 1950, Standard for Safety of Information Technology Equipment
- CSA 22.2#220, Information Processing and Business Equipment, CSA 22.2#950, Safety of Electrically Energized Office Machines
- IEC 380, Safety of Electrically Energized Office Machines, and IEC 950, Safety of Information Technology Equipment Including Electrical Business Equipment
- VDE 0805, VDE 0805 TIEL 100, VDE 0806
- Complies with FCC Class B, Part 15, Subpart J
General
SEAGATE SUPPORT SERVICES
Seagate Technology
------------------
Technical Support Services
If you need assistance installing your drive, consult your dealer.
Dealers are familiar with their unique system configurations and can
help you with system conflicts and other technical issues. If you
need additional assistance with your Seagate(r) drive or other
Seagate products, use one of the Seagate technical support services
listed below.
SeaFONE at 1-800-SEAGATE (1-800-732-4283)
Seagate's 800 number allows toll-free access to automated self-help
services, providing answers to commonly asked questions,
troubleshooting tips and specifications for disc drives and tape
drives. This service is available 24 hours daily and requires a
touch-tone phone. If you need to speak to a technical support
engineer, dial this number and listen to the options for technical
support. (International callers can also reach this automated
self-help service by dialing 408-456-4496).
Seagate Technology online services
Using a modem, you can obtain troubleshooting tips, free utility
programs, drive specifications and jumper settings for Seagate's
entire product line. You can also download software for installing
and analyzing your drive.
SeaNET
You can obtain technical information on Seagate drives, Seagate
software and much more over the Internet from Seagate's World Wide
Web home page (http://www.seagate.com) or Seagate's ftp server
(ftp://ftp.seagate.com).
You may also send E-mail with your questions to DiscSupport@
Seagate.com or TapeSupport@Seagate.com.
SeaBOARD
SeaBOARD is a computer bulletin board system (BBS) that contains
information about Seagate's disc and tape drive products and is
available 24 hours daily. Set your communications software to eight
data bits, no parity and one stop bit (8-N-1). SeaBOARD phone numbers
are listed in the following table.
BBS Location Modem number
United States Disc: 408-434-1080; Tape: 408-456-4415
England 44-1628-478011
France 33 1-48 25 35 95
Germany 49-89-140-9331
Singapore 65-292-6973
Thailand 662-531-8111
Australia 61-2-9756-2359
Taiwan 886-2-719-6075
Seagate CompuServe forum
Online technical support for Seagate products is available on
CompuServe. To access our technical support forum, type go seagate.
This forum provides information similar to that found on SeaBOARD.
In addition, you can type questions or browse through previous
questions and answers on the forum messages.
Seagate Technology FAX services
SeaFAX
You can use a touch-tone telephone to access Seagate's automated FAX
system to receive technical support information by return FAX. This
service is available 24 hours daily.
Location Telephone number
United States 1-800-SEAGATE or 408-456-4496
England 44-1628-894084
Australia 61-2-9756-5170
Seagate technical support FAX
You can FAX questions or comments to technical support specialists 24
hours daily. Responses are sent during business hours.
Location FAX number
United States 408-944-9120
England 44-1628-890660
France 33 1-46 04 42 50
Germany 49-89-1430-5100
Australia 61-2-9725-4052
Singapore 65-293-4722
Hong Kong 852-2368 7173
Taiwan 886-2-715-2923
Korea 82-2-556-7294/4251
Seagate technical support
You can talk to a technical support specialist during business hours
Monday through Friday for one-on-one technical help. Before calling,
note your system configuration and drive model number (STxxxx). There
are several technical support phone numbers available for various
Seagate products.
Location Telephone number
United States Please dial 1-800-SEAGATE for the specific product
telephone number.
(6:00 A.M. to 11:15 A.M., 12:30 P.M. to 5:00 P.M.,
Pacific time, M-F)
England 44-1628-894083 (10:00 A.M. to 1:00 P.M., 2:00 P.M. to
5:00 P.M., M-F)
France 33 1-41 86 10 86 (9:30 A.M. to 12:30 P.M., 2:00
P.M. to 5:00 P.M., M-F)
Germany Disc: 49-89-140-9332; (9:30 A.M. to 12:30 P.M., 2:00
P.M. to 4:00 P.M., M-F)
Tape: 49-89-140-9333
Australia 61-2-9725-3366 (9:00 A.M. to 5:00 P.M., M-F)
Singapore 65-290-3998 (9:00 A.M. to 12:00 P.M., 2:00
P.M. to 5:00 P.M., M-F)
Hong Kong 852-2368 9918
Taiwan 886-2-514-2237
Korea 82-2-556-8241
SeaTDD 408-944-9121
Using a telecommunications device for the deaf (TDD), you can send
questions or comments 24 hours daily and exchange messages with a
technical support specialist between 6:00 A.M. to 11:15 A.M. and
12:30 P.M. to 5:00 P.M. (Pacific time) Monday through Friday.
Customer Service Centers
Seagate direct OEM, Distribution, System Integrator and Retail
customers should contact your Seagate Service Representative for
warranty information. Other customers contact your place of
purchase. Seagate offers comprehensive customer support for all
Seagate drives. Seagate customer service centers are the only
facilities authorized to service Seagate drives. These services are
available worldwide.
Location Telephone number FAX number
United States 1-800-468-3472; 405-949-6740
Other Americas
(Canada & Brazil) 405-949-6706; 405-949-6738
Mexico 525-546-6965; 525-546-4888
Europe, Middle
East & Africa 31-2065-43300; 31-2065-34320
Asia Pacific &
Australia 65-485-3595; 65-485-4980
Japan 81-3-5462-2904; 81-3-3462-2979
Seagate, Seagate Technology and the Seagate logo are registered
trademarks of Seagate Technology, Inc. SeaFAX, SeaFONE, SeaBOARD,
SeaTDD, SeaNET, Medalist and DiscWizard are either trademarks or
registered trademarks of Seagate Technology, Inc. or one of its
subsidiaries. All other trademarks or registered trademarks are the
property of their respective owners.
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