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Conner Peripherals, Inc. CP3020 Intelligent Disk Drive Product Manual Revision II August, 1990 3081 Zanker Road San Jose, CA 95134-2128 (408) 456-4500 Japan (81) 3-597-8321 Europe (49) 89-811-2097 Notice Conner Peripherals makes no warranty of any kind with regard to this material, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. Conner Peripherals shall not be liable for errors contained herein or for incidental consequential damages in connection with the furnishing, performance, or use of this material. Conner Peripherals, Inc. reserves the right to change, without notification, the specifications contained in this manual. Copyright Conner Peripherals, Inc. No part of this publication may be reproduced or translated into any language in any form without the written permission of Conner Peripherals, Inc. IBM, PC/AT and PC/XT are registered trademarks of International Business Machines Corporation. Table of Contents 1.0 Scope of Manual 2.0 Key Features 3.0 Specification Summary 3.1 Capacity 3.2 Configuration 3.3 Performance 3.4 Read/Write 3.5 Power Requirements (Typical) 3.6 Physical Characteristics 4.0 Environmental Characteristics 4.1 Temperature 4.2 Humidity 4.3 Altitude (relative to sea level) 4.4 Reliability and Maintenance 4.5 Shock 4.6 Magnetic Field 4.7 Acoustic Noise 4.8 Safety Standards 5.0 Functional Description 5.1 Read/Write and Control Electronics 5.2 Drive Mechanism 5.3 Air Filtration System 5.4 Head Positioning Mechanism 5.5 Read/Write Heads and Disks 5.6 Error Correction 5.7 Customer Options 6.0 Electrical Interface 6.1 Power Connector 6.2 Cabling 6.3 Diagnostic Routines 6.4 SCSI Termination 7.0 Recommended Mounting Configuration 8.0 SCSI Interface 8.1 SCSI Commands 8.2 Cable Requirements 8.3 Connector Requirements 8.4 Electrical Description 8.4.1 Output Characteristics 8.4.2 Input Characteristics 8.4.3 Terminator Power 1.0 Scope of Manual The manual lists the key features, specifications and environmental characteristics of the disk drive. It provides a functional description, along with electrical interface data and the recommended mounting configuration. Included is a list of the SCSI commands supported by the drive. 2.0 Key Features The Conner Peripherals CP3020 is a 3.5 inch low-profile (1.00") disk drive which offers high performance with low power consumption. Using the Small Computer System Interface (SCSI), which is compatible with the Common Command Set (CCS), the disk drive provides 20 Mbytes of formatted storage. Key features include: o Low power requirements enabling battery operation in portable environments o High performance rotary voice coil actuator with embedded servo system o Two of seven run length limited code o High shock resistance o Internal air filtration system o Sealed HDA o Automatic actuator latch against inner stop upon power down o Microprocessor-controlled diagnostic routines that are automatically executed at start-up o Automatic error correction and retries o Block size: 512 bytes o 8K byte data buffer with look-ahead caching o 1:1 Interleave 3.0 Specification Summary 3.1 Capacity 20 Mbytes Formatted 3.2 Configuration Actuator Type Rotory Voice-Coil Number of Disks 1 Data Surfaces 2 Data Heads 2 Servo Embedded Tracks per Surface 636 Track Density 1150 Track Capacity (bytes) 16,896 Bytes per Block 512 Blocks per Drive 41,976 Blocks per Track 33 3.3 Performance Seek: Trk to Trk 8.0 ms Average 27.0 ms Max. 50.0 Rotation Speed 3575 Data Rate 1.25 Mbytes Start Time: Typical 5 sec Maximum 10 sec Stop Time: Typical 5 sec Maximum 10 sec Interleave 3:1 Buffer Size 8K The timing is measured through the interface with the drive operating at nominal DC input voltages. The timing also assumes that the I/O driver overhead and 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. Host system must allow a minimum of 60 seconds for drive electronics to facilitate retries for a READY condition to become active. One retry is equal to 25 seconds. 3.4 Read/Write Interface SCSI Recording Method 2/7 RLL Recording Density 21,594 BPI Flux Density 14,396 RPI 3.5 Power Requirements (Typical) 12V DC 5V DC* Power R/W Mode 230 ma 275 ma 4.2 W Seek Mode 140 ma 180 ma 2.8 W Idle Mode 100 ma 160 ma 2.0 W Standby Mode 1 ma 90 ma 0.5 W Spin-up 700 ma 180 ma N/A *Without SCSI terminators installed Read/Write Mode: Occurs when data is being read from or written to the disk. Seek Mode: Occurs when the actuator is in motion. Idle Mode: Occurs when the drive is not reading, writing, or seeking. The spin-motor is up to speed and a Drive Ready condition exists. The actuator is residing on the last accessed track. Standby Mode: Occurs when the motor is stopped, actuator parked and all electronics except the interface control is in sleep state. (Standby Mode can be entered via the Stop Motor command.) Spin-Up Mode: Occurs while the spindle motor is accelerating from its rest state to its operational speed. During the typical spin-up cycle, current on the 12 volt line may reach up to 1000 mA for up to 500 microseconds. The specified current is the time averaged value over the spin-up cycle. Maximum noise allowed (DC to 1 MHZ, with equivalent resistive load: +12V DC: 1%, +5V DC: 2%. 3.6 Physical Characteristics Dimensions: 1.00" x 4.00" x 5.75" Weight: 1.1 lbs 4.0 Environmental Characteristics 4.1 Temperature Operating 5 deg. C to 55 deg. C Non-operating -40 deg. C to 60 deg. C Thermal Gradient 10 deg C P/h max. 4.2 Humidity Operating 8% to 80% Non-condensing Non-operating 8% to 80 % Non-condensing Max Wet Bulb 26 deg.C 4.3 Altitude (relative to sea level) Operating -200 to 10,000 ft Non-operating 40,000 ft 4.4 Reliability and Maintenance MTBF 50,000 hrs. (POH) MTTR 10 min 4.5 Shock Non-operating 70Gs 10ms Operating 5Gs 11ms Without non-recoverable errors 4.6 Magnetic Field The disk drive will meet its specified performance while operating in the presence of an externally produced magnetic field under the following conditions: 0 to 700Khz 6 gauss 700Khz to 1.5 Mhz 1 gauss 4.7 Acoustic Noise The sound pressure level will not exceed 40 dBA at a distance of 1 meter from the drive. 4.8 Safety Standards The CP3040 disk drive is designed to comply with relevant product safety standards such as: o UL 478, 5th edition, Standard for Safety of Information Processing and Business Equipment, and UL 1950, Standard for Safety of Information Technology Equipment o CSA 22.2 #154, Data Processing Equipment and CSA 22.2 #220, Information Processing and Business Equipment. o IEC 435 Safety Requirements for Data Processing Equipment, IEC 380, Safety of Electrically Energized Office Machines, and IEC 950, Safety of Information Technology Equipment Including Electrical Business Equipment. o VDE 0805 Equivalent to IEC 435, VDE 0805 TIEL 100, Equivalent to IEC 950, and VDE 0806, Equivalent to IEC 380. 5.0 Functional Description The CP3020 disk drive contains all necessary mechanical and electronic parts to interpret control signals, position the recording heads over the desired track, read and write data, and provide a contaminant free environment for the heads and disks. 5.1 Read/Write and Control Electronics One integrated circuit is mounted within the sealed enclosure in close proximity to the read/write heads. Its function is to provide head selections, read preamplification, and write data circuitry. The single microprocessor-controlled circuit card provides the remaining electronic functions, which include: o Read/Write Circuitry o Rotary Actuator Control o Interface Control o Spin Speed Control o Dynamic Braking 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 inside the data tracks. 5.2 Drive Mechanism A brushless DC direct drive motor rotates the spindle at 3575 rpm. The motor/spindle assembly is balanced to provide minimal mechanical runout to the disks and to reduce vibration of the HDA. A dynamic brake is used to provide a fast stop to the spindle motor when power is removed. 5.3 Air Filtration System The head-disk assembly is a sealed enclosure with an integral 0.3 micron filter which maintains a clean environment for the heads and disks. 5.4 Head Positioning Mechanism The read/write heads are supported by a mechanism coupled to a voice coil actuator. 5.5 Read/Write Heads and Disks Data is recorded on 95 mm diameter disks through 3370 type thin film or composite metal in gap heads. 5.6 Error Correction The CP3020 disk drive performs internal error correction. The six-byte error correction polynomial is capable of correcting one error burst with a maximum of 8 bits per 512-byte block. 5.7 Customer Options There are four jumpers available for configuration. Three of these jumpers, E1, E2, and E3, are used to select the drive's SCSI ID, installing E4 disables parity. Values: E1 = 1 E2 = 2 E3 = 4 6.0 Electrical Interface 6.1 Power Connector The drive has a 4-pin DC power connector (J3) mounted on the PCB. The recommended mating connector is AMP part number 1-480424-0 utilizing AMP pins (part number 350078-4 or equivalent). 6.2 Cabling Connect the SCSI interface cable to J2, Pin 1 is located next to the 4 pin power connector. Bus termination is required on the last device of the SCSI bus. 6.3 Diagnostic Routines The microprocessor performs diagnostics upon application of power. If an error is detected, the drive will not become ready. 6.4 SCSI Termination There are three removable terminators; RP1, RP2, and RP3. They can be removed from the drive if bus termination is provided elsewhere in the system. 7.0 Recommended Mounting Configuration The CP3020 drive is designed to be used in applications where the units may experience shock and vibrations at greater levels than larger and heavier disk drives. The design features which allow greater shock tolerance are the use of rugged heads and media, a dedicated landing zone, closed loop servo positioning and specially designed motor and actuator assemblies. Ten base mounting points are provided to the customer. The drive is mounted using 6-32 screws; 1/8" maximum insertion for the sides, and 1/4" maximum insertion for the bottom. The system integrator should allow ventilation to the drive to ensure reliable drive operation over the operating temperature range. The drive may be mounted in any attitude. For additional vibration isolation, an external suspension system may be used. 8.0 SCSI Interface This section contains a brief summary of the SCSI interface implemented in the CP3020. For additional details regarding the exact command description block format, please refer to the Second Generation SCSI Interface Manual. 8.1 SCSI Commands This section briefly lists the SCSI commands that are supported by the CP3020 disk drive: Format Unit 04H Inquiry 12H Mode Select 15H Mode Sense 1AH Read 08H Read Buffer 3CH Read Capacity 25H Read Defect Data 37H Read Extended 28H Read Long 3EH Reassign Blocks 07H Release 17H Request Sense 03H Reserve 16H Re-zero Unit 01H Seek 0BH Seek Extended 2BH Send Diagnostic 1DH Start/Stop Unit 1BH Test Unit Ready 00H Verify 2FH Write 0AH Write and Verify 2EH Write Buffer 3BH Write Extended 2AH Write Long 3FH 8.2 Cable Requirements A 50-conductor flat cable or 25-conductor twisted pair cable is required. The maximum cable length is 6.0 meters (19.68 ft.). The cable characteristic impedance should be 132 ohms + or- 10% with a minimum conductor size of 28 AWG. 8.3 Connector Requirements The drive connector is a 50-conductor connector which consists of two rows of 25 male pins on 100 mil centers. The cable connector is a 50-conductor non-shielded connector which consists of two rows of 25 female contacts on 100 mil centers. The pin assignments for this connector are shown in the following table: Signal* Pin** -DB0 2 -DB1 4 -DB2 6 -DB3 8 -DB4 10 -DB5 12 -DB6 14 -DB7 16 -DBP 18 GND 20 GND 22 GND 24 TERM PWR 26 GND 28 GND 30 -ATN 32 GND 34 -BSY 36 -ACK 38 -RST 40 -MSG 42 -SEL 44 -C/D 46 -REQ 48 -I/O 50 The minus sign (-) indicates active low. *All odd pins except pin 25 must be connected to ground. **Pin 25 must be left open. 8.4 Electrical Description The CP3020 drive uses open collector drivers. All assigned signals are terminated with 220 ohms to +5 volts and 330 ohms to ground. The termination resistors are removable for multi-device configurations. 8.4.1 Output Characteristics Each signal driven by the drive has the following output characteristics when measured at the drive connector: Signal Assertion 0.0 VDC to 0.4 VDC Min Driver Output Cap 48ma (sinking at 0.5 VDC Signal Negation 2.5 VDC to 5.25 VDC 8.4.2 Input Characteristics Each signal received by the drive must have the following input characteristics when measured at the drive connector: Signal Assertion 0.0 VDC to 0.8 VDC Max Total Input Load -0.4ma to 0.4 VDC Signal False 2.0 VDC to 5.25 VDC 8.4.3 Terminator Power Terminator power (TERMPWR) is supplied through a diode to prevent the back-flow of power to the drive. TERMPWR has the following characteristics: Supply Voltage 4.0 VDC to 5.25 VDC Min Source Dr. Capability 800ma Max Sink Capability 1.0ma with 1amp fuse* *Except for the purpose of providing power to an internal terminator.