MPI 40 Series - Page 6

TABLE OF CONTENTS (continued)
SECTION 3 THEORY OF OPERATION (cont'd)
3. 5 .1. 5 Step •
3.6
3.5.1.6 Write Gate •
3.5.1.7 Write Data •
3.5.1.8 Head Load (Alternate Input)
3.5.1.9 In Use (Alternate Input)
3.5.1.10 Write Current Switch (Alternate Input) •
3.5.2 Output Signals
3.5.2.1 Track 00 •
3.5.2.2 Index
3.5.2.3 Sector •
3.5.2.4 Ready
3.5.2.5 Read Data
3.5.2.6 FM Separated Data (Optional Output)
3.5.2.7 FM Separated Clock (Optional Output)
3.5.2.8 Write Protect
3.5.2.9 Disk Change (Optional Output)
3.5.2.10 Two Sided (Optional Output)
3.5.3 Alternate I/O Pins
3.5.4 Power Interface •
FUNCTIONAL OPERATIONS
3.6.1 Initialize
3.6.2 Drive Selection •
3.6.3 Track Positioning •
3.6.3.1 Step Out •
3.6.3.2 Step In
iv
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