A - 5 2 5 X T AREAL NO MORE PRODUCED Native| Translation ------+-----+-----+----- Form 2.5"/SUPERSLIMLINE Cylinders 1501| 1020| | Capacity form/unform 527/ MB Heads 8| 16| | Seek time / track 15.0/ 3.0 ms Sector/track | 63| | Controller IDE / XT Precompensation Cache/Buffer 128 KB Landing Zone Data transfer rate MB/S int Bytes/Sector 512 11.000 MB/S ext Recording method RLL 1/7 operating | non-operating -------------+-------------- Supply voltage 5 V Temperature *C 5 55 | -40 60 Power: sleep 0.1 W Humidity % 8 80 | 8 80 standby 0.2 W Altitude km -0.061 3.048| -0.061 12.192 idle W Shock g 10 | 100 seek 2.3 W Rotation RPM 3600 read/write 2.8 W Acoustic dBA 35 spin-up 6.0 W ECC Bit 88,REED SOLOMON MTBF h 100000 Warranty Month Lift/Lock/Park YES Certificates CSA,TUV,UL1950 ********************************************************************** L A Y O U T ********************************************************************** AREAL A340/A525XT/AT TECHNICAL MANUAL REV. 1, 01.11.1993 +---------------------------------------------------------+ | | | |XX44 | |XX | PCBA SIDE |XX I | |XX N | |XX T | |XX E | |X* R | |XX F | |XX A | |XX C | |XX E | |XX | |XX | | 2 | |XXJP1 | |XX50 +---------------------------------------------------------+ ********************************************************************** J U M P E R S ********************************************************************** AREAL A340/525AT/XT TECHNICAL MANUAL REV. 1, 01.11.1993 Jumper Setting ============== x = Factory default configuration JP1 Master/Slave Configuration ------------------------------- Interface Pins 47 and 48 OPEN Master x CLOSED Slave ********************************************************************** I N S T A L L ********************************************************************** AREAL A340/525AT/XT TECHNICAL MANUAL REV. 1, 01.11.1993 Notes on Installation ===================== Recommended Mounting Configuration ---------------------------------- horizontally vertically +-----------------+ +--+ +--+ | | | +-----+ +-----+ | | | | | | | | | +-+-----------------+-+ | | | | | | +---------------------+ | | | | | | | | | | | | | | | | | | +---------------------+ | +-----+ +-----+ | +-+-----------------+-+ +--+ +--+ | | | | +-----------------+ This drive is designed to be used in applications where the unit may experience extreme levels of both shock and vibration. There are no limits on mounting orientation and mounting clearance is not required. Maximum insertion length of the 3 mm x .5 screws is 0.15" (3.81 mm). Cabling ------- All 2.5 inch AT/IDE interface drives use a 44 pin male connector that incorporates power, control, and data signals. This configuration differs from the 3.5 inch IDE drives which employ a 40 pin signal connector and separate 4 pin power connector. Therefore, if you are replacing an existing 3.5 inch disk drive and are faced with a 40 pin connector, you will need an adapter card. If your computer was de- signed for 2.5" hard drives, there will be a 44 pin connection on the motherboard. Since power and ground are present at the interface connector, damage could be induced by offset or upside down connection. Please ensure that pin 20 of your system's female connector is properly keyed. Adapter Board ------------- GND +5VDC +----+-++ |O O O O| ++ +-----+-+ |+- Pin 44 | ++ |+----------------+ +------++ Pin 40 |+-------------------++-----++ |+--------------------++----++ |+---------------------++---++ |+----------------------+ || || || || || |+-----------------------+ ++Pin 1 +--++ Pin 1 ++ Physical Connection - AT Interface ---------------------------------- Both power and control signals are supplied to the drive through a single 44 pin cable. Please note that separate power is supplied to the logic and motor circuits to minimize noise coupling. Maximum length of this 44 pin cable is 18 inches (457 mm) since it is TTL driven. Two drives may be daisy chained on this cable, however, the cable remains restricted to 18 inches. Recommended mating connectors are as follows: +-------------------+-------------+---------+-------------------+ |Connector Style | 3M |Dupont | Elco | +-------------------+-------------+---------+-------------------+ |Flex Cable |N/A |86456-044|N/A | +-------------------+-------------+---------+-------------------+ |Ribbon Cable |N/A |N/A |20-8394-2044-04-101| +-------------------+-------------+---------+-------------------+ |PCBA Straight |N/A |86455-044|20-8390-2044-00-101| +-------------------+-------------+---------+-------------------+ |PCBA Rigth Angle | | | | |Areal Org. Height |150250-5122TH|N/A |N/A | |MCC Spec Height |150250-5222TH|88333-044|20-8390-2044-04-101| +-------------------+-------------+---------+-------------------+ Electrical Description - AT Interface ------------------------------------- All signal levels are TTL compatible. A logic "1" is from 2.0 volts to 5 volts. A logic "0" is from 0.0 volts to 0.7 volts. The interface between the drive adapter and the drive is termed 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 have the prefix Host. All negativ- ely active signals are prefixed with a "-" designation. All positiv- ely signals are prefixed with a "+" designation. Signals whose source is the Host are "outbound" and those whose source is the drive are "inbound". +------+-------------------+------+----------------+ | Pin | Signal | Pin | Signal | +------+-------------------+------+----------------+ | 01 | -Host Reset | 02 | Gnd | +------+-------------------+------+----------------+ | 03 | +Host Data 7 | 04 | +Host Data 8 | +------+-------------------+------+----------------+ | 05 | +Host Data 6 | 06 | +Host Data 9 | +------+-------------------+------+----------------+ | 07 | +Host Data 5 | 08 | +Host Data 10 | +------+-------------------+------+----------------+ | 09 | +Host Data 4 | 10 | +Host Data 11 | +------+-------------------+------+----------------+ | 11 | +Host Data 3 | 12 | +Host Data 12 | +------+-------------------+------+----------------+ | 13 | +Host Data 2 | 14 | +Host Data 13 | +------+-------------------+------+----------------+ | 15 | +Host Data 1 | 16 | +Host Data 14 | +------+-------------------+------+----------------+ | 17 | +Host Data 0 | 18 | +Host Data 15 | +------+-------------------+------+----------------+ | 19 | Gnd | 20 | Key | +------+-------------------+------+----------------+ | 21 | Not Connected | 22 | Gnd | +------+-------------------+------+----------------+ | 23 | -Host IOW | 24 | Gnd | +------+-------------------+------+----------------+ | 25 | -Host IOR | 26 | Gnd | +------+-------------------+------+----------------+ | 27 | -IOCHRDY | 28 | Not Connected | +------+-------------------+------+----------------+ | 29 | Not Used | 30 | Gnd | +------+-------------------+------+----------------+ | 31 | +Host IRQ | 32 | -Host IO16 | +------+-------------------+------+----------------+ | 33 | +Host Address 1 | 34 | -Host PDIAG | +------+-------------------+------+----------------+ | 35 | +Host Address 0 | 36 | +Host Address 2| +------+-------------------+------+----------------+ | 37 | -Host CS0 | 38 | -Host CS1 | +------+-------------------+------+----------------+ | 39 | -Host Active/Slave| 40 | Gnd | +------+-------------------+------+----------------+ | 41 | +5 Volt Logic | 42 | +5 Volt Motor | +------+-------------------+------+----------------+ | 43 | Gnd | 44 | +AT -XT | +------+-------------------+------+----------------+ | 45 | NO PIN | 46 | NO PIN | +------+-------------------+------+----------------+ | 47 | Master/Slave | 48 | Master/Slave | +------+-------------------+------+----------------+ | 49 | Not Used | 50 | Not Used | +------+-------------------+------+----------------+ Signal +AT/-XT: Selectable for AT or XT use. High = AT. This line is internally pulled up. Air Filtration System --------------------- Recirculated air is forced through a .3 micron filter, providing a clean environment for the recording heads and disks. ********************************************************************** F E A T U R E S ********************************************************************** AREAL A340/525AT/XT TECHNICAL MANUAL REV. 1, 01.11.1993 Functional Description ---------------------- The A340/A525 contains all necessary mechanical and electronic parts to interpret control signals, position the heads, read and write data, and provide a contaminant free environment for the heads and disks. Drive Mechanism --------------- A brushless DC motor rotates the spindle at 3600 RPM. Back EMF of the motor is used to quickly stop the spindle when power is removed. Error Correction ---------------- The A340/A525 employs an 88 bit Reed Solomon polynominal for Data Field error detection and correction, plus a 16 bit CRC code for ID Field error detection. One 31 bit burst or two 11 bit burst can be corrected on the fly. Head Positioner Mechanism ------------------------- The read/write heads are positioned by a rotary voice coil actuator which employs DSP control to ensure seek accuracy. Formatting ---------- Once the drive has been partitioned, DOS requires that it be format- ted. Formatting checks for defective sectors (and deallocates them if necessary) and builds the FAT (file allocation table). Make sure to use the "/s" option so that your hard drive will be bootable. Example: type "FORMAT C:/S". Format will only recognize hard drives that have valid DOS partitions, therefore FDISK must precede formatting. If an "Invalid Drive Specification" error is reported, the drive has not successfully been partitioned. Please run FDISK once more. Setup Table Alteration ---------------------- Whenever a peripheral device is changed or assed, your computer's CMOS table may require modification. This table is typically accessed at power on by pressing the "Del" key, or by running the "Setup" program. Once inside this setup program, you will be prompted for various parameters, but only need to specify the number of heads, sectors, and cylinders. Other variables such as write current, landing zone, etc., are determined by Areal engineering during the design phase and are hard coded into the drive. The A340 is most efficient when specified as a 12 head, 63 sector, 1020 cylinder device. The A525 is most efficient when specified as a 16 head, 63 sector, 1020 cylinder device. These exact parameters may not be available as an existing drive type. If this is the case, please locate the user definable BIOS entry (typically 47 or 48) and enter the parameter listed above. From these parameters, you can calculate total capacity of the A525 for example as 1020 x 16 x 63 x 512 = 526,417,920 bytes, however, even on a freshly formatted disk this total capacity cannot be used by the user, since some data space is used by DOS for FAT tables, directory space, etc. Most programs report capacity in this '526 million byte' format, however, some programs such as FDISK still use the old standard of 'megabytes'. In the megabyte measurement, total byte capacity is devided by 1.024 x 1.024, reducing the reported capacity to 502.031 megabytes. Seek Time --------- +----------------------------------+--------+ | |A340/525| +----------------------------------+--------+ |Track-to-Track msec. typ. | 3 | +----------------------------------+--------+ |Average msec. typ. | 15.0 | | msec. max. | 22 | +----------------------------------+--------+ |Latency msec. avg. | 8.33 | +----------------------------------+--------+ NOTE This Technical Manual describes all physical and electrical characteristices necessary to utilize the A340 or A525 in AT mode. Error Reporting --------------- When the drive receives a command from the Host, it checks for validity of the command, and with the exception of the Initialize Drive Parameters command, also checks register values for valid range. If the values are invalid, the drive does not execute the command, but instead posts the "ERR" bit in the Status register and the "ABRT" bit in the Error register. If a data error occurs during command execution, the command is terminated immediately. Valid errors are listed in the following table: -----------------+--------------------------+---------------------+ COMMAND |ERROR REGISTER |STATUS REGISTER | +---------------------+----+---------------------+ |BBK|UNC|IDNF|ABRT|TK0|AMNF|DRDY|DSC|DWF|CORR|ERR| -----------------+---+---+----+----+---+----+----+---+---+----+---+ Exec. Drive Diag.| | | | V | | | | | | | V | Format Track | | | V | V | | | V | V | V | | V | Identify Drive | | | | V | | | V | V | V | | V | Initi. Parameters| | | | V | | | | | | | V | Power Commands | | | | V | | | | | | | V | Recalibrate | | | | V | V | | V | V | V | | V | Read/Write Buffer| | | | V | | | | | | | V | Read Long | V | | V | V | | V | V | V | V | | V | Read Multiple | V | V | V | V | | V | V | V | V | V | V | Read Sectors | V | V | V | V | | V | V | V | V | V | V | Read Verify Sec. | V | V | V | V | | V | V | V | V | V | V | Seek | | | V | V | | | V | V | V | | V | Set Multiple | | | | V | | | V | V | V | | V | Write Long | V | | V | V | | | V | V | V | | V | Write Multiple | V | | V | V | | | V | V | V | | V | Write Sectors | V | | V | V | | | V | V | V | | V | Write Verify | V | V | V | V | | | V | V | V | V | V | -----------------+---+---+----+----+---+----+----+---+---+----+---+ Key: V = Valid errors for each command ABRT = Command aborted BBK = Bad block detected CORR = Data error corrected by ECC DRDY = Drive not ready DSC = Disk seek complete not detected DWF = Drive write fault detected ERR = Error detected IDNF = ID mark not found TK0 = Track zero not found error UNC = Uncorrectable data error AMNF = Address mark not found