Seagate ST32112A - page 9

U4 Family Product Manual, Rev. D 1

Introduction

This manual describes the functional, mechanical and interface specifi-

cations for the U4 ST38421A, ST36421A, ST34311A a nd the

ST32112A. These drives provide the following key features:

•Low power consumption

•Quiet operation

•10-5 msec seek time, 5-400-RPM and 256-Kbyte buffer for exc ellent

desktop performance

•High instantaneous (burst) data-transfer rates (up to 66.6 Mbytes per

second) using Ultra DMA mode 4

•300 Gs nonoperating shock

•Full-track multiple-sector transfer capability without local processor

intervention

•State-of-the-art cache and on-the-fly error-correction algorithm s

•MR recording heads and EPRML technology, which provide the drives

with increased areal density

•Support for S.M.A.R.T. drive monitoring and reporting

•Support for Read Multiple and Write Multiple commands

•Support for autodetection of master/slave drives that use cabl e select

(CSEL)

Contents

Main Page Page Page Contents Page Page Page Page 2 U4 Family Product Manual, Rev. D Specification summary table U4 Family Product Manual, Rev. D 3 4 U4 Family Product Manual, Rev. D 1.0 Drive specifications this drive 1.2 Physical organization n 1.3 Recording and interface technology 1.4 Physical characteristics 1.5 Seek time 1.6 Start/stop times 1.7 Power specifications 1.7.1 Power consumption Page 1.7.1.1 Typical current profile Page Page Page 1.8.6.1 Operating vibration 1.8.6.2 Nonoperating vibration 1.9 Drive acoustics 1.10 Electromagnetic susceptibility 1.11 Reliability 1.12 Agency certification 1.12.1 Safety certification 1.12.2 Electromagnetic compatibility 1.12.3 FCC verification Page 2.0 Configuring and mounting the drive 2.2 Jumper settings 2.2.1 Master/slave configuration Page 20 U4 Family Product Manual, Rev. D Note: Dimensions are shown in inches (mm). Figure 3. Mounting dimensionstop, side and end view 3.0 ATA interface 3.1 ATA interface signals and connector pins 22 U4 Family Product Manual, Rev. D Figure 4. I/O pins and supported ATA signals 3.2 ATA Interface commands 3.2.1 Supported ATA commands Draft ATA-4 Standard. 3.2.2 Identify Drive command Draft ATA-4 Standard. Page Page Page Page 3.2.3 Set Features command (default). (default) 3.2.4 S.M.A.R.T. commands Draft ATA-4 Standard. (default).