S T 3 4 2 5 A F I L E P R O SEAGATE NO MORE PRODUCED Native| Translation ------+-----+-----+----- Form 3.5"/SLIMLINE Cylinders 3687| 826| | Capacity form/unform 425/ MB Heads 2| 16| | Seek time / track 15.0/ 3.0 ms Sector/track | 63| | Controller IDE / ATA2 FAST/ENHA Precompensation 826 Cache/Buffer 64 KB SEGMENTED Landing Zone Data transfer rate MB/S int Bytes/Sector 512 13.000 MB/S ext 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| -0.061 12.192 idle 3.8 W Shock g 5 | 75 seek 5.7 W Rotation RPM 3600 read/write 4.9 W Acoustic dBA 34 spin-up W ECC Bit MTBF h 250000 Warranty Month Lift/Lock/Park YES Certificates ********************************************************************** L A Y O U T ********************************************************************** CONNER CFS-425A QUICK REFERENCE GUIDE REV. C, 12/1994 +---------------------------------------------------------+ | |XXI | |XXN | |XXT 40PIN | |XXE | |XXR | |XXF | |XXA | |XXC | |XXE | |XX | |XX ++-+C/D | ++ | |XX J2 ++ |C/S |xx Power ++ | |XX ++-+ |XX J6 +---------------------------------------------------------+ Power ********************************************************************** J U M P E R S ********************************************************************** CONNER CFS-425A QUICK REFERENCE GUIDE REV. C, 12/1994 Jumper Setting ============== The C/D jumper is used to determine whether the drive is a master (drive C) or a slave (drive D). The drive is configured as a master, when jumpered, and a slave when not jumpered. Master/Standalone ----------------- C/D A/C CS x o o C/D CLOSED X o o Slave ----- C/D A/C CS o o o All OPEN o o o Cable Select Master or Slave ---------------------------- C/D A/C CS o o x CS CLOSED o o X Master/Slave Configuration -------------------------- When two drives are daisy-chained on the host interface, one must be designated as 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. 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. Cable Select ------------ This optional method of drive Master/Slave designation can be enabled by jumper selection. If used, special cabling can be used to selectively ground the CSEL interface signal of the drive intended to be drive C (0). This drive will then function as the Master. If CSEL is allowed to float the drive will recognize itself as drive D (1) and function as the Slave. -HOST PDIAG Pin 34 This signal shall be asserted by the slave to the master that it has completed diagnostics. A 10K ohm pull-up resistor shall be used on this signal by each drive. Following a POR, a software reset, or a RESET-, the slave will negate PDIAG- within 1 ms (to indicate to the master that it is busy). The slave will then assert PDIAG- within 30 seconds to indicate that it is no longer busy and is able to provide status. After the assertion of PDIAG-, the slave may be unable to accept commands until it has finished its reset procedure and is ready (DRDY =1). Following the receipt of a valid Execute Device Diagnostics command, the slave will negate PDIAG- within 1 ms to indicate to the master that it is busy and has not yet passed its drive diagnostics. If the slave is present, then the master will wait for up to 5 seconds from the receipt of a valid Execute Device Diagnostics s command for the slave to assert PDIAG-. The slave should clear BSY before asserting PDIAG-, as PDIAG- is used to indicate that the slave has passed its diagnostics and is ready to post status. If DASP- was not asserted by the slave during reset initialization, the master will post its own status immediately after it completed diagnostics and clear the slave status register to 00 hex. The master may be unable to accept commands until it has finished its reset procedure and is Ready (DRDY = 1). -DASP Pin 39 DASP- (drive active/slave present). This is a time-multiplexed signal which indicates that a drive is active, or that the slave is present. This signal is an open-collector output and each drive has a 10K pull-up resistor. During power-on initialization or after RESET is negated, DASP- shall be asserted by the slave within 400 ms to indicate that the slave is present. The master shall allow up to 450 ms for the slave to assert DASP-. If the slave is not present, the master may assert DASP- to drive an activity LED. DASP- shall be negated following acceptance of the first valid command by drive 1 or after 31 seconds, whichever comes first. Any time after negation of DASP-, either drive may assert DASP- to indicate that a drive is active. ********************************************************************** I N S T A L L ********************************************************************** CONNER CFS-425A QUICK REFERENCE GUIDE REV. C, 12/1994 Notes on Installation ===================== Installation direction ---------------------- horizontally vertically +-----------------+ +--+ +--+ | | | +-----+ +-----+ | | | | | | | | | +-+-----------------+-+ | | | | | | +---------------------+ | | | | | | | | | | | | | | | | | | +---------------------+ | +-----+ +-----+ | +-+-----------------+-+ +--+ +--+ | | | | +-----------------+ The drive will operate in all axis (6 directions). Mounting the Drive ------------------ You can mount the drive either vertically or horizontally. The drive will meet all performance specifications when mounted at any orientation. Caution: The surface(s) on which you mount the drive should be flat and parallel to prevent uneven pressure on the drive. Mounting the drive on an uneven surface could cause the drive's base to deform, degrading drive performance. Caution: When using the side mounting holes, verify the screw length to ensure clearance from the drive's printed circuit board before tightening the screw. J6 Standard 4-pin Power Connector --------------------------------- +----------------------- | +-----J6-----+ +---- pin 1 +12V | | 1 2 3 4 | | 1 pin 2 GND | +------------+ +-- pin 3 GND +------------------ pin 4 +5V J2 Optional 3-pin Power Connector --------------------------------- +------------------------------ | +-----J6-----+ +--J2---+ +--- pin 1 +5 V | | 1 2 3 4 | | 1 2 3 | | 1 pin 2 +12V | +------------+ +-------+ +---- pin 3 GND +---------------------------------- Mounting Holes -------------- Side: 6-32 UNC-2B .16 max. insertion Bottom: 6-32 UNC-2B .22 max. insertion Brushless DC ------------ A brushless DC direct-drive motor assembly is mounted on the drive's base. The motor rotates the drive's spindle at 3600 RPM. The motor/spindle assembly is dynamically balanced to provide minimal mechanical runout to the disks. A dynamic brake is used to provide a fast stop to the spindle motor and return the heads to the landing zone when power is removed. Head Positioning Mechanism -------------------------- The read/write heads are supported by a mechanism coupled to a rotary voice coil actuator. Read/Write Heads and Disks -------------------------- Data is recorded on a 95mm diameter disk using 3350-type Metal In Gap (MIG) and/or Thin Film composite heads. The CFS425A contains: - one disk with two data surfaces - two read/write heads At power-down, the heads are automatically retracted to the inner diameter of the disk and are latched and parked on a landing zone that is separate from the data tracks. The drive has a single 40-pin data connector, as well as an auxiliary connector which is reserved for factory or evaluation use. The drive has two power connectors, only one of which should be used at a time. The two connectors provide connection versatility to a number of host systems. The mating connector for the 4 pin connector is AMP 1-480424-0 (housing) and AMP 60619-4 (loose piece) or 61117-4 (strip) contacts. ********************************************************************** F E A T U R E S ********************************************************************** CONNER CFS-425A PRODUCT GUIDE The drive assembly housing consists of an extruded aluminum base on which is mounted a drawn aluminum cover. In addition, the aluminum cover has a designed in breather filter and diffusion tube that prevents entry of contaminants which might degrade head and media reliability. Aluminum tape seals the joint between the base and cover. Critical drive components are contained within this contaminant-free environment, which is commonly referred to as the Head-Disk Assembly (HDA). Safety Standards ---------------- 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 - UL 1950, Standard for Safety of Information Technology Equipment - CSA 22.2 #220, Information Processing and Business Equipment - CSA 22.2 #950, Safety of Information Technology Equipment - IEC 380, Safety of Electrically Energized Office Machines - IEC 950, Safety of information Technology Equipment Including Electrical Business Equipment - VDE 0805, VDE 0805 TIEL 100, and VDE 0806 - Complies with FCC Class B, Part 15, Subpart J Error Correction ---------------- The drive uses a Reed-Solomon code to perform error detection and correction. For each 512-byte block, the software error correction polynomial is capable of correcting: - one error burst up to 22 bits - two error bursts up to 11 bits each Single bursts of 11 bits or less are corrected on the fly (OTF) with no performance degradation. Conner has established a Universal Translate Mode which enables you to configure the drive in an AT environment to any cylinder, head, and sector configuration desired. The translate configuration is limited by the maximum capacity of the drive and host system parameters. Upon initial power-up of the drive, it will default to the configuration. Signal Levels ------------- All signal levels are TTL compatible. A logic "1" is >2.0 Volts. A logic "0" is from 0.00 Volts to 0.70 Volts. Execute Device Diagnostics -------------------------- 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 receipt 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 diagnostics, 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 interface registers are set to initial values except for the Error register. Error Code 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 diagnostics or there is no slave drive connected, the master drive shall set bit 7 of the Error register in the Task File to 0.