Manual/User Guide
Page 37
...mode 4 or DMA mode 2 U-DMA mode 5), occurrence of ringing or crosstalk of the signal lines (AT bus) between the HA and the disk drive should be a great cause of the obstruction of failure. C141-E120-02EN 2-5 Thus, it is necessary that could be made it the cause of system...the disk drive. 2.2 System Configuration IMPORTANT HA (host adaptor) consists of the signal lines including the HA and cable does not exceed the ATA-5 standard, and the cable length between the HA and the disk drive may be as short as possible. Thus, that the capacitance of address decoder, driver, and ...
...mode 4 or DMA mode 2 U-DMA mode 5), occurrence of ringing or crosstalk of the signal lines (AT bus) between the HA and the disk drive should be a great cause of the obstruction of failure. C141-E120-02EN 2-5 Thus, it is necessary that could be made it the cause of system...the disk drive. 2.2 System Configuration IMPORTANT HA (host adaptor) consists of the signal lines including the HA and cable does not exceed the ATA-5 standard, and the cable length between the HA and the disk drive may be as short as possible. Thus, that the capacitance of address decoder, driver, and ...
Manual/User Guide
Page 46
Installation Conditions - Do not stack when carrying. Figure 3.7 Handling cautions - Do not drop. Installation (1) Please use an electric driver. ESD mat Shock absorbing mat Place the shock absorbing mat on the operation table, and place ESD mat on it. Do not hit HDD each ...other. Recommended equipments ESD Shock Contents Wrist strap ESD mat Low shock driver Model JX-1200-3056-8 SKY-8A (Color Seiden Mat) SS-6500 Maker SUMITOMO 3M Achilles HIOS 3-8 C141-E120-02EN Do not place HDD vertically to...
Installation Conditions - Do not stack when carrying. Figure 3.7 Handling cautions - Do not drop. Installation (1) Please use an electric driver. ESD mat Shock absorbing mat Place the shock absorbing mat on the operation table, and place ESD mat on it. Do not hit HDD each ...other. Recommended equipments ESD Shock Contents Wrist strap ESD mat Low shock driver Model JX-1200-3056-8 SKY-8A (Color Seiden Mat) SS-6500 Maker SUMITOMO 3M Achilles HIOS 3-8 C141-E120-02EN Do not place HDD vertically to...
Manual/User Guide
Page 56
...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 2 closed-loop servo using the Modified Extended Partial Response (...output from the head. 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). read/write preamplifier (PreAMP) and read /write circuit consists...
...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 2 closed-loop servo using the Modified Extended Partial Response (...output from the head. 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). read/write preamplifier (PreAMP) and read /write circuit consists...
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... that is written on the data side beforehand. 4.7.1 Servo control circuit Figure 4.7 is controlled according to the track containing the desired data. C141-E120-02EN 4-15
... 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... that is written on the data side beforehand. 4.7.1 Servo control circuit Figure 4.7 is controlled according to the track containing the desired data. C141-E120-02EN 4-15
Manual/User Guide
Page 69
...the power amplifier. (4) Power amplifier The power amplifier feeds currents, corresponding to the DAC output signal voltage to the differentiation (aberration). (6) Driver circuit The driver circuit is in Figure 4.9 followed the servo mark, cylinder gray and index information are output from the servo data on the data surface... of the motor 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 Fourierdemodulator in the servo burst capture circuit.
...the power amplifier. (4) Power amplifier The power amplifier feeds currents, corresponding to the DAC output signal voltage to the differentiation (aberration). (6) Driver circuit The driver circuit is in Figure 4.9 followed the servo mark, cylinder gray and index information are output from the servo data on the data surface... of the motor 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 Fourierdemodulator in the servo burst capture circuit.
Manual/User Guide
Page 74
...by sending several signals from the host, the MPU confirms the necessity of access to move the head. The MPU then feeds the VCM drive current by Fujitsu. The charged amount defines the current that , repeating this order). 4-22 C141-E120-02EN The MPU feeds the VCM current via the ... the difference (speed error) between the target position and the position clarified by feeding micro current. The calculation is used as the spindle motor driver (called SVC hereafter). c) The SVC generates a phase switching signal by itself, and changes the phase of the current flowed in the motor ...
...by sending several signals from the host, the MPU confirms the necessity of access to move the head. The MPU then feeds the VCM drive current by Fujitsu. The charged amount defines the current that , repeating this order). 4-22 C141-E120-02EN The MPU feeds the VCM current via the ... the difference (speed error) between the target position and the position clarified by feeding micro current. The calculation is used as the spindle motor driver (called SVC hereafter). c) The SVC generates a phase switching signal by itself, and changes the phase of the current flowed in the motor ...
Manual/User Guide
Page 191
...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 ... 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 output ...20 Interlock time with one agent (either sender or recipient) is waiting for lumped capacitive loads of 15 and 40 pf at the connector where all modes the parameter tZIORDY may be greater than 2. ...
...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 ... 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 output ...20 Interlock time with one agent (either sender or recipient) is waiting for lumped capacitive loads of 15 and 40 pf at the connector where all modes the parameter tZIORDY may be greater than 2. ...
Manual/User Guide
Page 225
... a single sector. The physical specifications of these drives is for a PC AT interface regulated to these components from a drive. Commands are called ATA interfaces. C141-E120-02EN GL-1 To make full use of these drivers. Data block A data block is daisychained with the second drive which , for drives The BIOS standard collectively refers to and...
... a single sector. The physical specifications of these drives is for a PC AT interface regulated to these components from a drive. Commands are called ATA interfaces. C141-E120-02EN GL-1 To make full use of these drivers. Data block A data block is daisychained with the second drive which , for drives The BIOS standard collectively refers to and...