D S O A - 2 0 5 4 0 T R A V E . 2 L P IBM Native| Translation ------+-----+-----+----- Form 2.5"/SUPERSLIMLINE Cylinders | 1050| | Capacity form/unform 540/ MB Heads 2| 16| | Seek time / track 13.0/ 4.0 ms Sector/track | 63| | Controller IDE / ATA2 FAST/ENHA Precompensation Cache/Buffer 128 KB Landing Zone Data transfer rate 6.625 MB/S int Bytes/Sector 512 16.600 MB/S ext PIO4 Recording method operating | non-operating -------------+-------------- Supply voltage 5 V Temperature *C 5 55 | 65 Power: sleep W Humidity % 8 90 | 5 95 standby 0.1 W Altitude km -0.300 3.000| -0.300 12.000 idle 1.7 W Shock g | 120 seek 2.3 W Rotation RPM 4000 read/write 2.3 W Acoustic dBA spin-up W ECC Bit ENHANCED, ON THE FLY MTBF h Warranty Month Lift/Lock/Park YES Certificates ********************************************************************** L A Y O U T ********************************************************************** IBM DSOA-20540/20810/21080 JUMPER SETTING +--------------------------------------+ | | | | | | +--------Interface-------------47------+ | **********************1 **45 Jumper | *************x********* **46 | +------44----------------------48------+ + + Pin position 20 is left blank for secure connector insertion. Pin position 47: When grounded, no spin-up at POR when open/pull up, normal spin-up at POR. ********************************************************************** J U M P E R S ********************************************************************** IBM DLGA/DSOA Jumper Setting ============== A jumper cable is available at the interface connector to determine drive address. Using cable selection, the drive address depends on the condition of pin 28 of the AT interface cable. In the case when pin 28 is ground or low, the drive is a master. If pin 28 is open or high level, the drive is a slave. DLGA +----------------------------------------------49--47 | * * * * * * * * * * * * * * * * * * * * * * * * * | | * * * * * * * * * * * * * * * * * * * * * * * * | +----------------------------------------------50--48 ------49--47 * * | No jumper = MASTER * * | ------50--48 ------49--47 * X | * X | SLAVE ------50--48 ------49--47 * * | xxxx| CABLE SELECTION ------50--48 ------49--47 xxxx| * * | RESERVED (=MASTER) ------50--48 ------49--47 X * | X * | NEVER ATTACH A JUMPER HERE!!! ------50--48 ********************************************************************** I N S T A L L ********************************************************************** IBM DSOA-21080/20810/20540 JUMPER SETTING Notes On Installation ===================== Installation direction ---------------------- horizontally vertically +-----------------+ +--+ +--+ | | | +-----+ +-----+ | | | | | | | | | +-+-----------------+-+ | | | | | | +---------------------+ | | | | | | | | | | | | | | | | | | +---------------------+ | +-----+ +-----+ | +-+-----------------+-+ +--+ +--+ | | | | +-----------------+ The drive will operate in all axis (6 directions). Cabling ------- The maximum cable length from the host system to tge HDD plus circuit pattern in the host system shall not exceed 18 inches. AT Signal Connector ------------------- The AT Signal Connector is designed to mate with Dupont part number 69764-044 or equivalent. NOTES Pin position 20 is left blank for secure connector insertion. Pin 47: When grounded, No Spin-up at POR when open/pull up, Normal Spin-up at POR. NOTE Interface Signals ---------------------- There are two input pins for +5 Volt power supply, "+5V Logic" (Pin 41) and "+5V Motor" (Pin 42). Pin 41 is connected to the internal logic circuits and Pin 42 is connected to the spindle motor and motor drive. It is possible to turn on and off +5V Logic by an external switch circuit to reduce power consumption to the least possible. In this mode, a voltage drop out due to the motor spin up current can be reduced by connecting +5V Motor line into the system power source directly. If the above power management is used, all signal lines that will be electrically active in the host system while the HDD is disconnected from power line shall be isolated by three-state line drivers. Internal leakage through ESD protection circuit may pull down LPUL (least positive up level) of logic signal specification.