S T 9 4 2 2 A SEAGATE NO MORE PRODUCED Native| Translation ------+-----+-----+----- Form 2.5"/SUPERSLIMLINE Cylinders | 818| | Capacity form/unform 422/ MB Heads 4| 16| | Seek time / track 12.0/ 3.0 ms Sector/track | 63| | Controller IDE / ATA2 FAST/ENHA Precompensation Cache/Buffer 32 KB Landing Zone 818 Data transfer rate 3.000 MB/S int Bytes/Sector 512 11.100 MB/S ext Recording method RLL 1/7 operating | non-operating -------------+-------------- Supply voltage 5 V Temperature *C 5 55 | -40 60 Power: sleep 0.2 W Humidity % 5 90 | 5 90 standby 0.2 W Altitude km -0.061 3.048| -0.061 4.572 idle 0.9 W Shock g 100 | 300 seek 1.0 W Rotation RPM 3600 read/write 1.3 W Acoustic dBA 35 spin-up W ECC Bit MTBF h 300000 Warranty Month Lift/Lock/Park YES Certificates ********************************************************************** L A Y O U T ********************************************************************** CONNER CFL-420A QUICK REFERENCE GUIDE REV. C, 12/1994 +---------------------------------------------------------+ | |XX | |XX | A/C |XX 44-pin | +----------+ C/D-+++-CS |XX Data | +----------+ +-+-+-+ |XX and | |XX Power | |XX | |XX | |XX | |XX | |XX | |XX | |XX | | 1 | |XX +---------------------------------------------------------+ ********************************************************************** J U M P E R S ********************************************************************** CONNER CFL-420A QUICK REFERENCE GUIDE REV. C, 12/1994 Jumper Setting ============== CAM Master/Standalone --------------------- C/D A/C CS +---+---+---+ |XXX| : | : | +---+---+---+ CAM Slave --------- C/D A/C CS +---+---+---+ | : | : | : | +---+---+---+ CAM Cable Select Master or Slave -------------------------------- C/D A/C CS +---+---+---+ | : | : |XXX| +---+---+---+ ISA Master/Standalone --------------------- C/D A/C CS +---+---+---+ |XXX|XXX| : | +---+---+---+ ISA Slave --------- C/D A/C CS +---+---+---+ | : |XXX| : | +---+---+---+ ISA Cable Select Master or Slave -------------------------------- C/D A/C CS +---+---+---+ | : |XXX|XXX| +---+---+---+ Master/Slave Configuration -------------------------- When two drives are daisy-chained on the host interface, one must be designated at 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. The drive supports two master/slave modes via the A/C jumper. When A/C is open, ATA/CAM master/slave mode is selected. When A/C is closed, Conner master/slave mode is selected. Supported Master/Slave Modes ---------------------------- There are three different master/slave methods that Conner supports. - ISA Original - Conner - ATA/CAM Of these three methods, the drive supports all except ISA/Original mode, with which is compatible. NOTE The ATA/CAM master/slave method is not compatible with the other two methods. The Conner mode is backward-compatible to the ISA Original mode, but is not compatible with the other. These three methods are explained in the following sections. For signals followed by a ' ', activate means go low and deactivate means go high. ISA Original Master/Slave ------------------------- The signals used for master/slave operation and determination are Host DASP and Host PDIAG . Host DASP can be used to: - drive an activity LED - indicate that the slave drive is present to the master The Host PDIAG is used to indicate that the slave has passed diagnostics both at power-on reset (POR) and when the diagnostic command is issued. At power-on time, the slave drive activates Host PDIAG and Host DASP . Host PDIAG remains activated from POR until a diagnostic command is issued by the host. Once a diagnostic is issued by the host, the slave deactivates Host PDIAG until either: - the slave successfully completes the diagnostic command - the host issues a reset There are no real timing constraints on Host PDIAG and Host DASP . At POR, they are both activated within a second or two. When the diagnostic command is issued by the host, the slave inactivates Host PDIAG within 100-200 microseconds and is required to reactivate it within 5 seconds (the only timing constraint) if it successfully completes the command. This scheme works fairly well except for two problems: - There is no way to tell when the slave becomes ready. If the slave becomes ready much later than the master, the slave will miss any command that are issued before it goes not busy because the host only polls the master to see if the "controller" is ready. - In a two-drive configuration, the Host DASP line is not available to drive a drive activity indicator. In this mode of master/slave, master/slave re-configures with either a hardware or software reset. A hardware reset is either a POR or host reset. This version of master/slave is present on generations 1, 2, and 3 of Conner drives. Conner Master/Slave ------------------- To remendy the problem of the host not knowing when the slave was ready, Conner developed a backward-compatible solution, which we call Conner Master/Slave. In Conner Master/Slave, the use of the Host PDIAG signal has been changed slightly during reset so that the slave will indicate when it will go not busy. Its use in the diagnostic command has not been changed. During POR or any host reset, the slave drive activates Host PDIAG within 1ms. The master drive waits slightly longer that 1 ms for Host PDIAG to be activated before it determines that no slave is present. The slave then deactivates Host PDIAG when it is ready. The master waits: - up to 14 seconds for the slave to deactivate Host PDIAG on either a POR or a host reset - 450 ms for the slave to deactivate Host PDIAG on a host software reset If the master times out, it goes not busy. In this mode of master/slave, master/slave re-configures with either a hardware or software reset. A hardware reset is either a Power On Reset (POR) or host bus reset. This solution was implemented in generations 4 and greater of Conner drives. ATA/CAM Master/Slave -------------------- This industry-standard master/slave solution was developed by the CAM shortly after the development of the Conner Master/Slave. The polarity of Host PDIAG is opposite that of the Conner solution and this is what makes this master/slave scheme incompatible with the Conner scheme. At power-on time, the slave deactivates Host PDIAG and then activates Host DASP within 1 ms of either POR or host reset. Host DASP activate indicates that a slave is present. The slave activates Host PDIAG when it is ready to accept commands or after 30 seconds, whichever occurs first. This period is reduced to 450ms for a software reset. A hardware reset is either a POR or host bus reset. This solution was implemented in generations 4.5 and greater of Conner drives and is selectable with the A/C jumper or the CAM bit in the feature word.