Manual/User Guide
Page 37
...-5 standard, and the cable length between the HA and the disk drive may be a great cause of the obstruction of the signal lines (AT bus) between the HA... and the disk drive should be contacted with the spindle motor. At high speed data transfer (PIO mode 4 ... mode 5), occurrence of ringing or crosstalk of system reliability. Thus, that could be as short as possible. The disk drive is an abbreviation of failure. Thus, it the cause of "AT attachment". C141-E120-02EN 2-5 2.2 System Configuration IMPORTANT...
...-5 standard, and the cable length between the HA and the disk drive may be a great cause of the obstruction of the signal lines (AT bus) between the HA... and the disk drive should be contacted with the spindle motor. At high speed data transfer (PIO mode 4 ... mode 5), occurrence of ringing or crosstalk of system reliability. Thus, that could be as short as possible. The disk drive is an abbreviation of failure. Thus, it the cause of "AT attachment". C141-E120-02EN 2-5 2.2 System Configuration IMPORTANT...
Manual/User Guide
Page 46
... (5 Kg·cm) - Installation (1) Please use the driver of the screw strictly. Do not hit HDD each other. Do not stack when carrying. Figure 3.7 Handling cautions - HDD is occasionally damaged by the impact of the driver. (2) Please observe the tightening torque of a low impact... when you use an electric driver. Installation Conditions - Recommended equipments ESD Shock Contents Wrist strap ESD mat Low shock driver Model JX-1200-3056-8 SKY-8A (Color Seiden...
... (5 Kg·cm) - Installation (1) Please use the driver of the screw strictly. Do not hit HDD each other. Do not stack when carrying. Figure 3.7 Handling cautions - HDD is occasionally damaged by the impact of the driver. (2) Please observe the tightening torque of a low impact... when you use an electric driver. Installation Conditions - Recommended equipments ESD Shock Contents Wrist strap ESD mat Low shock driver Model JX-1200-3056-8 SKY-8A (Color Seiden...
Manual/User Guide
Page 56
...and speed of the voice coil motor are controlled by 2 closed-loop servo using the servo information recorded on the media surface. (3) Spindle motor driver circuit The circuit measures the interval of a PHASE signal generated by a MPU and then reconverted to digital for processing by counterelectromotive voltage of a ... and read /write circuit consists of two LSIs; Theory of Device Operation 4.3 Circuit Configuration Figure 4.2 shows the power supply configuration of the disk drive, and Figure 4.3 shows the disk drive circuit configuration. (1) Read/write circuit The read channel (RDC).
...and speed of the voice coil motor are controlled by 2 closed-loop servo using the servo information recorded on the media surface. (3) Spindle motor driver circuit The circuit measures the interval of a PHASE signal generated by a MPU and then reconverted to digital for processing by counterelectromotive voltage of a ... and read /write circuit consists of two LSIs; Theory of Device Operation 4.3 Circuit Configuration Figure 4.2 shows the power supply configuration of the disk drive, and Figure 4.3 shows the disk drive circuit configuration. (1) Read/write circuit The read channel (RDC).
Manual/User Guide
Page 67
... capture MPU DSP unit Position Sense SVC (3) DAC (4) Power Amp VCM current (7) CSR VCM CSR: Current Sense Resister VCM: Voice Coil Motor (5) Spindle motor control (6) Driver Spindle motor Figure 4.7 Block diagram of servo control circuit (1) Microprocessor unit (MPU) The MPU includes the DSP unit, and the MPU starts the spindle motor...
... capture MPU DSP unit Position Sense SVC (3) DAC (4) Power Amp VCM current (7) CSR VCM CSR: Current Sense Resister VCM: Voice Coil Motor (5) Spindle motor control (6) Driver Spindle motor Figure 4.7 Block diagram of servo control circuit (1) Microprocessor unit (MPU) The MPU includes the DSP unit, and the MPU starts the spindle motor...
Manual/User Guide
Page 69
...information with the target revolution speed, then flows the current into the motor coil according to the differentiation (aberration). (6) Driver circuit The driver circuit is in the servo burst capture circuit. The servo signals do A/D-convert by Fourierdemodulator in hold mode. At that... by the interrupt generated periodically, compares 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 the DSP unit into analog values and transfers them to the power amplifier. (4) Power amplifier The power...
...information with the target revolution speed, then flows the current into the motor coil according to the differentiation (aberration). (6) Driver circuit The driver circuit is in the servo burst capture circuit. The servo signals do A/D-convert by Fourierdemodulator in hold mode. At that... by the interrupt generated periodically, compares 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 the DSP unit into analog values and transfers them to the power amplifier. (4) Power amplifier The power...
Manual/User Guide
Page 74
... For each sampling timing during head movement to the disk. These are three modes for each sampling time, the VCM drive current is used as the spindle motor driver (called SVC hereafter). The spindle motor is charged enough, the MPU sets the SVC to the motor start mode, ...and power amplifier to charge the charge pump capacitor of the SVC. When the head arrives at the center of a track, the DSP drives the VCM by Fujitsu. To position the head at the target cylinder, the track is followed. (3) Track following operation Except during head moving. The filtering includes...
... For each sampling timing during head movement to the disk. These are three modes for each sampling time, the VCM drive current is used as the spindle motor driver (called SVC hereafter). The spindle motor is charged enough, the MPU sets the SVC to the motor start mode, ...and power amplifier to charge the charge pump capacitor of the SVC. When the head arrives at the center of a track, the DSP drives the VCM by Fujitsu. To position the head at the target cylinder, the track is followed. (3) Track following operation Except during head moving. The filtering includes...
Manual/User Guide
Page 191
... after negating DMARDY-) tIORDYZ 20 20 20 20 20 20 Maximum time before releasing IORDY tZIORDY 0 0 0 0 0 0 Minimum time before driving IORDY (*4) tACK 20 20 20 20 20 20 Setup and hold (tDH, tCH) times in modes greater than tENV due to the fact ... time (*1) tMLI 20 20 20 20 20 20 Interlock time with minimum (*1) TUI 0 0 0 0 0 0 Unlimited interlock time (*1) tAZ 10 10 10 10 10 10 Maximum time allowed for output drivers to release (from asserted or negated) tZAH 20 20 20 20 20 20 Minimum delay time required for the other agent to respond...
... after negating DMARDY-) tIORDYZ 20 20 20 20 20 20 Maximum time before releasing IORDY tZIORDY 0 0 0 0 0 0 Minimum time before driving IORDY (*4) tACK 20 20 20 20 20 20 Setup and hold (tDH, tCH) times in modes greater than tENV due to the fact ... time (*1) tMLI 20 20 20 20 20 20 Interlock time with minimum (*1) TUI 0 0 0 0 0 0 Unlimited interlock time (*1) tAZ 10 10 10 10 10 10 Maximum time allowed for output drivers to release (from asserted or negated) tZAH 20 20 20 20 20 20 Minimum delay time required for the other agent to respond...
Manual/User Guide
Page 225
... data. A data block normally indicates a single sector. DE Disk enclosure. The DE is the first drive that can handle the standard parameters of these components from a drive. Glossary Actuator Head positioning assembly. If positions the read-write (R-W) head. The physical specifications of sectors ...to and output data from dust. Interfaces based on the AT bus. Data block A data block is for drives The BIOS standard collectively refers to these drivers. The DE includes the disks, built-in command registers. AT bus A bus between products manufactured by the host...
... data. A data block normally indicates a single sector. DE Disk enclosure. The DE is the first drive that can handle the standard parameters of these components from a drive. Glossary Actuator Head positioning assembly. If positions the read-write (R-W) head. The physical specifications of sectors ...to and output data from dust. Interfaces based on the AT bus. Data block A data block is for drives The BIOS standard collectively refers to these drivers. The DE includes the disks, built-in command registers. AT bus A bus between products manufactured by the host...