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Text File | 1992-04-26 | 22KB | 664 lines

Conner Peripherals, Inc. CP30104H Intelligent Disk Drive Product Manual Revision I February, 1992 3081 Zanker Road San Jose, CA 95134-2128 (408) 456-4500 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. c 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 Physical 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 and Vibration 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 Reas/Write Heads and Disks 5.6 Error Correction 5.7 Customer Options 6.0 Power Connectors 6.1 Task File Interface Connector 6.2 Signal Levels 6.3 Signal Conventions 6.4 Pin Descriptions 7.0 Recommended Mounting Configuration 1.0 Scope of Manual This manual describes the key features, specification summary, physical characteristics, environmental characteristics, functional description, electrical interface, recommended mounting configuration, timing requirements, host address decoding, command description, operations description, and error reporting for Conner Peripherals CP30104H drives. 2.0 Key Features The CP30104H is a high performance 3.5 inch low- profile (1") 121 megabyte (formatted) disk drive with 19 ms average seek time that is designed to operate on an IBM PC/ATr or equivalent in translate mode. The drive features low power requirements and high shock resistance, enabling battery operation in portable environments. Because the drive contains the Task File within its control logic, it requires a simplified adapter board to operate. o Low power requirements enabling battery operation in portable environments. o High performance rotary voice coil actuator with embedded servo system. o 1,7 run length limited code. o High shock resistance 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 512 byte block size . o Emulates Task File with support for for additional commands. o Up to two drives may be daisy-chained on the AT interface. o 32K Look Ahead buffer 3.0 Specification Summary 3.1 Capacity Formatted Mbytes 121.7 3.2 Physical Configuration Head Type MIG Disk Type Thin film Actuator Type Rotary Voice-coil Rotary Voice- coil Number of Disks 2 Data Surfaces 4 Data Heads 4 Servo Embedded Tracks per Surface 15241 Track Density (TPI) 1850 Formatted Track Capacity (bytes) 19,968 Bytes per Block 512 Blocks per Drive 237,744 Sectors per Track: 39 The physical parameters of the drive are 1524 cylinders, 4 heads, and 39 sectors per track. At power up, the CP30104H will default to its native translate mode which is 762 cylinders, 8 heads and 39 sectors. 3.3 Performance Seek: Track to Track 8ms Average <19.0ms Maximum 35.0ms Rotation Speed (+0.1%) 3400 RPM Data Transfer Rate (to/from Media) 1.5 Mbyte/second Start Time(Power Up) typical: 15 seconds maximum: 20 seconds Stop Time (Power Down) typical: 15 seconds maximum: 20 seconds Interleave 1:1 Buffer Size 32K The timing is measured through the interface with the drive operating at nominal DC input voltages. The timing also assumes that: o BIOS and PC system hardware dependency have been subtracted from timing measurements. o The drive is operated using its native drive parameters. 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. These numbers assume spin recovery is not invoked. If spin recovery is invoked, the maximum time could be up to 40 seconds. Briefly removing power can lead to spin recovery being invoked. 3.4 Read/Write Interface Task File (AT) Recording Method 1,7 RLL code Recording Density (ID) 33,184 bits per inch Flux Density (ID) 24,888 flux reversals per inch 3.5 Power Requirements (Typical) +12V DC ± 5% +5V DC ± 5% Power Read/Write Mode 200 ma 280 ma 3.8 W Seek Mode 260 ma 150 ma 3.9 W Idle Mode 175 ma 75 ma 2.8 W Standby Mode 10 ma 75 ma 0.5 W Sleep Mode 10 ma 40 ma 0.3 W Spin-up Mode 1100 ma 380 ma N/A Read/Write mode occurs when data is being read from or written to the disk. Seek Mode occurs while the actuator is in motion. Idle Mode occurs when the drive is not reading, writing, or seeking. The motor is up to speed and DRIVE READY condition exists. Actuator is residing on last accessed track. Standby Mode occurs when the motor is stopped, actuator parked and all electronics except interface control is in sleep state. STANDBY MODE will occur after a programmable time-out after the last host access occurs. Drive ready and seek complete status exist. The drive will leave STANDBY MODE upon receipt of a command which requires disk access or upon receipt of a spin up command. Sleep Mode occurs when the host issues the SLEEP command to the drive. SLEEP MODE is the same as STANDBY MODE except that interface control is also powered down. To exit the SLEEP MODE, the Host Reset line on the interface must be asserted. The SRST bit in the Digital Output Register is useful for this purpose (see section 9.12). Maximum noise allowed (DC to 1 MHZ, with equivalent resistive load): Source +12V DC +5V DC Noise 1% 2% Spin up Mode current draw is for 7 seconds maximum. 3.6 Physical Characteristics Outline Dimensions ± .010 1.00" max. x 4.00" x 5.75" Weight 1.3 pounds 4.0 Environmental Characteristics 4.1 Temperature Operating 5°C to 55°C Non-operating -40°C to 60°C Thermal Gradient 20°C per hour maximum 4.2 Humidity Operating 8% to 80% non-condensing Non-operating 8% to 80% non-condensing Maximum Wet Bulb 26°C 4.3 Altitude (relative to sea level) Operating -200 to 10,000 feet Non-operating (max) 40,000 feet 4.4 Reliability and Maintenance MTBF 100,000 hours (POH)1 MTTR 10 minutes typical Preventive Maintenance None Component Design Life 5 years Data Reliablity <1 non-recoverable error in 1012 bits read 4.5 Shock and Vibration Shock 1/2 sine pulse, 11 msecond duration Vibration Swept sine, 1 octave per minute Non-operating shock 75Gs Non-operating vibration 5-62 Hz (1.2 oct/min) 0.020ö double amplitude 63-500 Hz (1/2 oct/min) 4 Gs peak Operating Shock 5 Gs (without non-recoverable errors) Operating Vibration 5-22 Hz .025 inch displacement (double amplitude) 23-500 Hz .5 Gs (without non-recoverable error) 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: Frequency Field Intensity: 0 to 700Khz 6 gauss maximum 700Khz to 1.5Mhz 1 gauss maximum 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 Conner Peripherals disk drives are 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 and CSA 22.2 #950, Safety of Information Technology 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 o TUV Essen and TUV Rheinland. 5.0 Functional Characteristics The drives contain 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 read pre-amplification and write data circuitry. The read/write heads are supported by a mechanism coupled to the voice coil actuator. The single circuit card provides the remaining microprocessor-controlled electronic functions, which include: o Read/Write Circuitry o Rotary Actuator Control o Interface Control o Spin Speed Control o Dynamic Braking o Power Management At power down or the start of STANDBY MODE the heads are automatically retracted to the inner diameter of the disk and are latched and parked on a landing zone that is off the data tracks. 5.2 Drive Mechanism A brushless DC direct drive motor rotates the spindle. 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, or upon initiation of STANDBY MODE. 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 the voice coil actuator in the CP30104H. 5.5 Read/Write Heads and Disks Data are recorded on two 95mm diameter disks through four miniature metal-in-gap heads. 5.6 Error Correction The drive performs internal error correction. The error correction polynomial is capable of correcting one error burst with a maximum of 8 bits in each half of a 512 byte block. 5.7 Customer Options The drive has one set of jumpers labeled C/D, DSP, E1. C/D - Jumpered addresses drive as drive C. Not jumpered addressed drive as drive D. DSP - Drive slave present. Not jumpered selects single drive only. E1 - Not used. 6.0 Power Connectors The drive haves a 4 pin DC power connector mounted on the PCB. The recommended mating connector is AMP part number 1-480424-0 utilizing AMP pins, part number 350078-4 or equivalent. DC power may also be supplied to the drive in some interfaces through a 3 pin connector. The recommended mating connector is Molex part number 39-01-0033 utilizing Molex pins, part number 39-00-0031 or equivalent. 6.1 Task File Interface Connector A 40 pin Task File Interface connector mounted on the printed circuit board. The recommended mating connector is Molex part number 10-91-2401 or equivalent. Two drives may be daisy chained together at this connector, and the maximum cable length is two feet. 6.2 Signal Levels All signal levels are TTL compatible. A logic "1" is > 2.0 Volts. A logic "0" is from 0.00 Volts to .70 Volts. The drive capability of each of the inbound signals is described below. 6.3 Signal Conventions The interface between the drive adapter and the drive is called the Host Interface. The set of registers in the I/O space of the Host is known as the Task File. All signals on the Host Interface shall have the prefix HOST. All negatively active signals shall be further prefixed with a "-" designation. All positive active signals shall be prefixed with a "+" designation. Signals whose source are the Host, are said to be "outbound" and those whose source is the drive, are said to be "inbound". 6.4 Pin Descriptions The following table describes all of the pins on the Task File Interface. Signal Name Dir Pin Description - HOST RESET O 01 Reset signal from the Host which is active low during power up and inactive thereafter. GND O 02 Ground between drive and Host. +HOST DATA I/O 3-18 16-bit bi-directional data bus 0-16 between the Host and the drive. The lower 8 bits, HD0 - HD7, are used for register and ECC access. All 16 bits are used for data transfers. These are tri-state lines with 24 mA drive capability. GND O 19 Ground between drive and Host. KEY N/C 20 An unused pin clipped on the drive and plugged on the cable. Used to guarantee correct orientation of the cable. RESERVED O 21 GND O 22 Ground between drive and Host. - HOST IOW O 23 Write strobe, the rising edge of which clocks data from the Host data bus, HD0 through HD15, into a register on the drive. GND O 24 Ground between drive and Host. - HOST IOR O 25 Read strobe which, when low, enables data from a Task File register onto the Host data bus HD0 through HD15. The rising edge of -HOST IOR latches data from the drive at the Host. GND O 26 Ground between drive and Host. RESERVED O 27,29 +HOST ALE O 28 Host Address Latch Enable. A signal used to qualify the address lines. This signal is presently not used . GND O 30 Ground between drive and host. +HOST IRQ14 I 31 Interrupt to the Host system, enabled only whenthe drive is selected, and the Host activates the - IEN bit in the Digital Output register. When the - IEN bit is inactive, or the drive is not selected, this output is in a high impedance state, regardless of the state of the IRQ bit. The interrupt is set when the IRQ bit is set by the drive CPU. IRQ is reset to zero by a Host read of the Status register or a write to the Command register. This signal is a tri-state line with 8 mA drive capacity. - HOST I/O16 I 32 Indication to the Host system that the 16 bit data register has been addressed and that the drive is prepared to send or receive a 16 bit data word. This line is a tri-state line with 24 mA drive capacity. - HOST PDIAG I 34 Passed diagnostic. Output by the drive if it is strapped in the slave mode (C/D not jumpered).Input to the drive if it is strapped in the master mode (C/D jumpered). This low true signal indicates to a master that the slave has passed its internal diagnostic command. This line is a tri-state line with 24 mA drive capability. +HOST A0, O 35, Binary coded address used to select A1, A2 33,36 the individual registers in the Task File. - HOST CS0 O 37 Chip select decoded from the Host address bus. Used to select some of the Host accessible registers. - HOST CS1 O 38 Chip select decoded from the Host address bus. Used to select three of the registers in the Task File. - HOST SLV/ACT I 39 Signal from the drive used either to drive an activity LED or as an indication of a second drive present. (See the Customer Options section for further information.) When jumpered as -ACTIVE, this signal is active low when the drive is busy and has a drive capability of 20 mA. When jumpered as -SLAVE PRESENT signal, it is an indication of the presence of a second drive when low. In this state, it has a drive capability of 10 mA open drain. GND O 40 Ground between drive and Host. 7.0 Recommended Mounting Configuration This drive is designed to be used in applications where the unit 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 x 1/8" maximum insertion for the sides, and .20" 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.