Fujitsu MHT2020AT, MHT2030AT, MHT2040AT, MHT2060AT, MHT2080AT 6.1.2 Response to hardware reset

6.1 Device Response to the Reset

C141-E192-01EN 6-3

Max. 31 sec.

Max. 450 ms.

Max. 30 sec.

Max. 1 ms.

If presence of a slave device is

confirmed, PDIAG- is checked for

up to 31 seconds.

Checks DASP- for up to

500 ms.

DASP-

PDIAG-

BSY bit

Power On Reset-

Status Reg.

BSY bit

Power On Reset-

Slave device

Master device

Power on

Figure 6.1 Response to power-on

Note: Figure 6.1 has a assumption that the device is kept on the power-off condition for more than

5 sec before the device power is turned on.

6.1.2 Response to hardware reset

Response to RESET- (hardware reset through the interface) is similar to the

power-on reset.

Upon receipt of hardware reset, the master device checks a DASP- signal for up

to 500 ms to confirm presence of a slave device. The master device recognizes the

presence of the slave device when it confirms assertion of the DASP- signal.

Then the master device checks a PDIAG- signal to see if the slave device has

successfully completed the self-diagnostics.

If the master device cannot confirm assertion of the DASP- signal within 450 ms,

the master device recognizes that no slave device is connected.

Contents

Main FOR SAFE OPERATION Page Page Preface Overview of Manual Conventions for Alert Messages Operating Environment Conventions Page Page Important Alert Items Important Alert Messages Page Manual Organization Page Contents CHAPTER 2 Device Configuration................................................................ 2-1 CHAPTER 3 Installation Conditions..............................................................3-1 CHAPTER 4 Theory of Device Operation......................................................4-1 Page Page Page Illustrations Figures Page Tables CHAPTER 1 Device Overview 1.1 Features 1.1.1 Functions and performance 1.1.2 Adaptability 1.1.3 Interface Device Overview 1-4 C141-E192-01EN 1.2 Device Specifications 1.2.1 Specifications summary Table 1.1 shows the specifications of the disk drives (MHT Serie s). Table 1.1 Specifications (1/2) 1.2.2 Model and product number 1.3 Power Requirements Page Page 1.4 Environmental Specifications 1.5 Acoustic Noise 1.6 Shock and Vibration 1.7 Reliability 1.8 Error Rate 1.9 Media Defects 1.10Load/Unload Function 1.11Advanced Power Management Page Page Page 2.1 Device Configuration 2.2 System Configuration 2.2.1 ATA interface 2.2.2 1 drive connection 2.2.3 2 drives connection CHAPTER 3 Installation Conditions Page 3.2 Mounting Page Page Page Page Installation Conditions 3-8 C141-E192-01EN Figure 3.7 Handling cautions 3.3 Cable Connections 3.3.1 Device connector 3.3.2 Cable connector specifications 3.3.3 Device connection 3.4 Jumper Settings 3.4.2 Factory default setting 3.4.3 Master drive-slave drive setting 3.4.4 CSEL setting Page CHAPTER 4 Theory of Device Operation 4.1 Outline 4.2 Subassemblies 4.2.1 Disk 4.2.2 Spindle 4.2.3 Actuator 4.3 Circuit Configuration Page 4.3 Circuit Configuration DE Figure 4.2 Circuit Configurati on PCA C141-E192-01EN 4-5 4.4 Power-on Sequence 4.5 Self-calibration 4.5.1 Self-calibration contents 4.5.2 Execution timing of self-calibration 4.5.3 Command processing during self-calibration 4.6 Read/write Circuit 4.6.1 Read/write preamplifier (PreAMP) 4.6.2 Write circuit Page 4.6.3 Read circuit 4.6.4 Digital PLL circuit 4.7 Servo Control 4.7.1 Servo control circuit Page Page 4.7.2 Data-surface servo format !" # # Page 4.7.4 Actuator motor control 4.7.5 Spindle motor control Page Page CHAPTER 5 Interface 5-2 C141-E192-01EN 5.1 Physical Interface IDD 5.1.1 Interface signals Figure 5.1 shows the interface signals. Figure 5.1 Interface signals 5.1.2 Signal assignment on the connector Page Page 5.2 Logical Interface 5.2.1 I/O registers 5.2.2 Command block registers Page Page Page Page 5.2.3 Control block registers 5.3 Host Commands 5.3.1 Command code and parameters Page Page Page 5.3.2 Command descriptions Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page 5.3 Host Commands C141-E192-01EN 5-107 5.3.3 Error posting 5-108 C141-E192-01EN Table 5.21 Command code and parameters (2 of 2) 5.4 Command Protocol 5.4.1 PIO Data transferring commands from device to host Page 5.4.2 PIO Data transferring commands from host to device Page 5.4.3 Commands without data transfer Page 5.4.4 Other commands 5.4.5 DMA data transfer commands Page Page 5.5 Ultra DMA Feature Set 5.5.1 Overview 5.5.2 Phases of operation 5.5.3 Ultra DMA data in commands Page Page Page Page 5.5.4 Ultra DMA data out commands Page Page Page 5.5.5 Ultra DMA CRC rules 5.5.6 Series termination required for Ultra DMA 5.6 Timing 5.6.1 PIO data transfer 5.6.2 Multiword data transfer 5-132 C141-E192-01EN 5.6.3 Ultra DMA data transfer Page Page Page Page Page Page Page Page Page Page 5.6 Timing C141-E192-01EN 5-143 Page 5.6.4 Power-on and reset Page Page 6.1 Device Response to the Reset 6.1.1 Response to power-on 6.1.2 Response to hardware reset Page 6.1.3 Response to software reset 6.1.4 Response to diagnostic command 6.2 Power Save 6.2.1 Power save mode Page 6.2.2 Power commands 6.3 Defect Processing 6.3.1 Spare area 6.3.2 Alternating processing for defective sectors Page 6.4 Read-ahead Cache 6.4.1 DATA buffer structure 6.4.2 Caching operation Page Page Page Page Page 6.5 Write Cache 6.5.1 Cache operation Page Page Page Glossary Page Page Page Acronyms and Abbreviations Page Index Page Comment Form