BASF 6106 - Table of Contents

L IST 0 F C 0 N T E N T S
SECTION
PAGE SECTION
PAGE
1.
INTRODUCTION
1-1
1.1
Genera 1
1-1
2.2.8 Type of Heads
2-20
1.2
Related oocumentation
1-1
2.2.8.1 Read/Write Head
2-20
l.J
Description
1-1
2.2.8.2 Side Select Logic 2-21
1.4
Specification
Summary
1-2
2.2.9 Write Ci rcuits 2-22
1.5
Options Summary
1-4
2.2.9.1 Wr ite In it i ate
2-22
1. 5.1 Factory
Installed Option
1-4
2.2.9.2 Write Logic 2-22
1. 5. 2
Jumper Options
1-4
2.2.9.3 Erase Delay Logic 2-24
1.6
Recording
Media
1-5
2.2.10
Read Circuits 2-25
1.7
Recording Formats
1-5
2.2.10.1
Read Initiate and Read Block
2-25
1. 7.1 FM Encoding
1-5
Diagram
1. 7.2 MFM Encoding
1-5
2.2.10.2 Read/Write Select
2-26
1.8
Track Format
1-6
2.2.10.3
Read Amplifiers and Filter 2-26
Network
1.8.1 Soft Sectored Track Formats
1-6
2.2.10.4 Active
oifferentiator and 2-27
1.8.1.1 Soft Sectored Track Format
1-6 Comparator
for Single Density with
2.2.10.5
Time oomain Filter and Crossover
2-27
16 Sec tors/Track ä 128 Bytes
oetector
1.8.1.2 Soft Sectored Track Format
1-9
2.2.10.6
Timing Diagram Read Circuits 2-28
for Single oensity
(9 Sec tors per Track ä 256 Bytes)
2.2.11
oC-Control
and Power On 2-29
1.8.1.3 Soft Sectored Track Format
1-10
Reset Logic
for
Double oensity
2.2.11.1
DC-Control 2-29
(16 Sectors per Track a 256 Bytes)
2.2.11.2
Power On Reset Logic
2-29
2.
THEORY OF OPERATION
2-1
2.1
Functional
oescription
2-1
2.1.1 Drive Mechanism
2-2
2.1.2 Spindle and Front ooor Mechanism
2-2
2.1.3 Positioning Mechanism
2-3
2.1.4
Head Load Mechanism
2-4
2.2
Logic Description
2-5
2.2.1
Interface Logic 2-5
2.2.1.1
Input Interface
2-6
2.2.1.2
Output Interface
2-6
2.2.1.3 Jumper Options
2-7
2.2.2 Stepper Motor Control 2-12
2.2.3 Drive Motor Control
2-14
2.2.4 Head Load Logic 2-15
2.2.5
Track Zero oetector 2-16
2.2.6 Write Protect oetector 2-17
2.2.7 Index/Sec
tor- and Ready Detector 2-18
2.2.7.1 Index/Sector oetection 2-18
2.2.7.2 Ready Oetection 2-19
III