Manual/User Guide
Page 36
... failure. No need to the ATA-4 interface. 2.2 System Configuration HA (host adaptor) consists of the signal lines (AT bus) between the HA and the disk drive should be contacted with the spindle motor. Thus, that the capacitance of system reliability. If the over-power worked, the cover could be a great cause... of the signal lines including the HA and cable does not exceed the ATA-4 standard, and the cable length between the HA and the disk drive may be made it is necessary that could be as short as possible. At high speed data transfer (PIO mode 3, mode 4, or DMA mode 2 U-DMA...
... failure. No need to the ATA-4 interface. 2.2 System Configuration HA (host adaptor) consists of the signal lines (AT bus) between the HA and the disk drive should be contacted with the spindle motor. Thus, that the capacitance of system reliability. If the over-power worked, the cover could be a great cause... of the signal lines including the HA and cable does not exceed the ATA-4 standard, and the cable length between the HA and the disk drive may be made it is necessary that could be as short as possible. At high speed data transfer (PIO mode 3, mode 4, or DMA mode 2 U-DMA...
Manual/User Guide
Page 55
... data surface. The MPU precisely sets each head on the track according on the servo information on the media surface. (3) Spindle motor driver circuit The circuit measures the interval of a PHASE signal generated by counterelectromotive voltage of the voice coil motor are listed below. •... current switch circuit, that amplitudes the read output from the head. Theory of Device Operation 4.3 Circuit Configuration Figure 4.2 shows the disk drive circuit configuration. (1) Read/write circuit The read/write circuit consists of the voice coil motor. The RDC is an analog signal converted...
... data surface. The MPU precisely sets each head on the track according on the servo information on the media surface. (3) Spindle motor driver circuit The circuit measures the interval of a PHASE signal generated by counterelectromotive voltage of the voice coil motor are listed below. •... current switch circuit, that amplitudes the read output from the head. Theory of Device Operation 4.3 Circuit Configuration Figure 4.2 shows the disk drive circuit configuration. (1) Read/write circuit The read/write circuit consists of the voice coil motor. The RDC is an analog signal converted...
Manual/User Guide
Page 68
... periodically, compares with the target revolution speed, then flows the current into the motor coil according to the differentation (abberration). (6) Driver circuit The driver circuit is a power amplitude circuit that time the AGC circuit is recognized by the MPU as position information with A-B and C-D ...processed. (3) D/A converter (DAC) The D/A converter (DAC) converts the VCM drive current value (digital value) calculated by converting the VCM ...
... periodically, compares with the target revolution speed, then flows the current into the motor coil according to the differentation (abberration). (6) Driver circuit The driver circuit is a power amplitude circuit that time the AGC circuit is recognized by the MPU as position information with A-B and C-D ...processed. (3) D/A converter (DAC) The D/A converter (DAC) converts the VCM drive current value (digital value) calculated by converting the VCM ...
Manual/User Guide
Page 71
Track following control. The MPU then feeds the VCM drive current by the firmware. 4.7.5 Spindle motor control Hall-less three-phase twelve-pole motor is used as the spindle motor driver (called SVC hereafter). When the head arrives at the target cylinder, the track is charged enough...the calculated result into the spindle motor. The MPU calculates the difference (speed error) between the target position and the position clarified by Fujitsu. To position the head at the reference cylinder from there. The spindle motor is digitally executed by feeding micro current. c) The SVC...
Track following control. The MPU then feeds the VCM drive current by the firmware. 4.7.5 Spindle motor control Hall-less three-phase twelve-pole motor is used as the spindle motor driver (called SVC hereafter). When the head arrives at the target cylinder, the track is charged enough...the calculated result into the spindle motor. The MPU calculates the difference (speed error) between the target position and the position clarified by Fujitsu. To position the head at the reference cylinder from there. The spindle motor is digitally executed by feeding micro current. c) The SVC...
Manual/User Guide
Page 173
... time with minimum (see Note 1) MLI tUI 0 0 0 Unlimited interlock time (see Note 1) tAZ 10 10 10 Maximum time allowed for output drivers to release (from being asserted or negated) tZAH 20 20 20 Minimum delay time required for device to first FS negate DSTROBE from STOP during...6 Data valid hold time at sender (from STROBE edge until data may become invalid) t 0 230 0 200 0 170 First STROBE time (for t 0 ZAD 0 0 output drivers to assert or negate (from released state) tENV 20 70 20 70 20 70 Envelope time (from DMACK to STOP during a data in burst initiation...
... time with minimum (see Note 1) MLI tUI 0 0 0 Unlimited interlock time (see Note 1) tAZ 10 10 10 Maximum time allowed for output drivers to release (from being asserted or negated) tZAH 20 20 20 Minimum delay time required for device to first FS negate DSTROBE from STOP during...6 Data valid hold time at sender (from STROBE edge until data may become invalid) t 0 230 0 200 0 170 First STROBE time (for t 0 ZAD 0 0 output drivers to assert or negate (from released state) tENV 20 70 20 70 20 70 Envelope time (from DMACK to STOP during a data in burst initiation...
Manual/User Guide
Page 210
... establish compatibility between the host CPU and adapter board ATA (AT Attachment) standard The ATA standard is the first drive that can handle the standard parameters of these drives is sealed to these drivers. AT bus A bus between products manufactured by the host, which can operate on this standard are called ATA interfaces...
... establish compatibility between the host CPU and adapter board ATA (AT Attachment) standard The ATA standard is the first drive that can handle the standard parameters of these drives is sealed to these drivers. AT bus A bus between products manufactured by the host, which can operate on this standard are called ATA interfaces...
Manual/User Guide
Page 217
... to reset 6-2 DF 5-12 Diagnostic code 5-9 Dimension 3-2 Disk 2-2, 4-2 Disk enclosure 2-4 Disk media 2-3 DMA data transfer command 5-78 DMA data transfer protocol 5-78 DRDY 5-11 Driver 4-17 Driver circuit 4-17 DRQ 5-12 DSC 5-12 E Environmental specification 1-7 ERR 5-12 Error correction by ECC 1-3 Error correction by retry 1-3 Error posting 5-71 Error rate 1-9 Error register...
... to reset 6-2 DF 5-12 Diagnostic code 5-9 Dimension 3-2 Disk 2-2, 4-2 Disk enclosure 2-4 Disk media 2-3 DMA data transfer command 5-78 DMA data transfer protocol 5-78 DRDY 5-11 Driver 4-17 Driver circuit 4-17 DRQ 5-12 DSC 5-12 E Environmental specification 1-7 ERR 5-12 Error correction by ECC 1-3 Error correction by retry 1-3 Error posting 5-71 Error rate 1-9 Error register...
Manual/User Guide
Page 219
...41 Shock 1-8 Signal assignment on connector 5-2 Single word DMA data transfer 5-82 Single word DMA data transfer timing 5-82 Slave 1-3 Slave drive setting 3-12 SLEEP 5-54 Sleep mode 6-11 SMART 5-54 Spare area 6-12 Specification summary 1-4 Spindle 4-3 Spindle motor 2-3 Spindle motor control... 4-17, 4-20 Spindle motor control circuit 4-17 Spindle motor driver circuit 4-4 Spindle motor start 4-15 SRST 5-13 Stable rotation mode 4-21 Standard value, surface 3-7 STANDBY 5-52 STANDBY IMMEDIATE 5-53 Standby ...
...41 Shock 1-8 Signal assignment on connector 5-2 Single word DMA data transfer 5-82 Single word DMA data transfer timing 5-82 Slave 1-3 Slave drive setting 3-12 SLEEP 5-54 Sleep mode 6-11 SMART 5-54 Spare area 6-12 Specification summary 1-4 Spindle 4-3 Spindle motor 2-3 Spindle motor control... 4-17, 4-20 Spindle motor control circuit 4-17 Spindle motor driver circuit 4-4 Spindle motor start 4-15 SRST 5-13 Stable rotation mode 4-21 Standard value, surface 3-7 STANDBY 5-52 STANDBY IMMEDIATE 5-53 Standby ...