Specifications

Figure
Number
Title
LIST OF FIGURES
Page
1-1 SA810/860 Half-Height Floppy Disk Drive ................................. 1-0
1-2 SA810/860 Functional Diagram ........... . ............................ 1-5
1-3 Track Access Timing, Standard Seek
...................................... 1-6
1-4 Track Access Timing, Buffered
Seek ....................................... 1-7
1-5 Read Initiate Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
1-6 Read Signal Timing
(FM Encoding) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
1-7
FM and MFM Code Comparisons ......................................... 1-8
1-8 Write Initiate Timing
................................................... 1-9
1-9
SA810/860 General Control and Data Timing Requirements .................... 1-10
2-1 SA810/860 Interface Connections ........................................ 2-2
2-2 Interface Signal Driver/Receiver
.......................................... 2-3
2-3 Index Timing
........................................................ 2-5
2-4 Sector Timing
....................................................... 2-5
2-5
DC Power Profile ..................................................... 2-7
3-1 Interface
Connectors- Physical Locations .................................. 3-1
3-2
Jl Connector Dimensions .............................................. 3-2
3-3
J2/P2 Connector ..................................................... 3-2
4-1
Physical Dimensions ................................................... 4-2
6-1 Data
Pattern. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
6-2
Bit Cell ............................................................. 6-1
6-3 Byte
............................................................... 6-1
6-4 Data Bytes
.......................................................... 6-2
6-5
FM and MFM Encoding ................................................ 6-4
6-6
. SA810/860 Hard Sector Recording Format (FM) ............................. 6-4
6-7
MFM Track Format Comparison .......................................... 6-5
6-8
MFM Index Pre Address Mark ........................................... 6-6
6-9 Index Address Mark
FM ................................................ 6-6
6-10 MFM Index Address Mark .............................................. 6-7
6-11
10 Address Mark FM .................................................. 6-7
6-12
MFM 10 Address Mark ................................................. 6-7
6-13
MFM Pre ID/Data Address Mark ......................................... 6-8
6-14 Data Address Mark FM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-8
6-15 Deleted Data Address Mark
FM .......................................... 6-8
6-16
MFM Data Address Mark ............................................... 6-9
6-17
MFM Deleted Data Address Mark ......................................... 6-9
7
-1 PCB Component Locations (P /N 25227 and 25247) . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3
7 -2
PCB Component Locations (P /N 25249) ................................... 7-4
7 -3 External Write Current
Option ........ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-5
7 -4
Disk Change Timing ................................................... 7-5
7 -5
Disk Change Circuit ................................................... 7-6
7 -6 Side Selection
Using Direction Select ...................................... 7-6
7 -7 Side Selection
Using Drive Select ......................................... 7-7
7 -8 Motor
On Without Selecting Drive Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-8
7 -9 Motor
On by Opt. Motor On and Drive Select Circuit ........................... 7-9
7-10 Radial Ready Circuit. .................................................. 7-10
7 -11 Write Protect Circuit ................................................... 7-10
8-1 Loading the SA810/860 ............................................... 8-1
8-2 Diskette Write
Protect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2
8-3 Write
Protect Notch Specifications ........................................ 8-2
9-1
SA810/860 Packaging ................................................ 9-1
9-2
Pallet Loading ....................................................... 9-2
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