NEC FD1165 Maintenance Manual page 7

CHAPTER 3 INTERFACE INFORMATION
3.1 BASIC OPERATIONAL DESCRIPTION................
3.2 ELECTRICAL INTERFACE.........................
3.2.1
3.2.2
3.2.3
3.3 INPUT SIGNALS.......... ......................
3.3.1
3.3.2
3.3.3
3.3.4
3.3.5
3.3.6
3.3.7
3.3.8
3.3.9
3.3.10
3.4 OUTPUT SIGNALS......... ......................
3.4.1
3.4.2
3.4.3
3.4.4
3.4.5
3.4.6
3.4.7
3.4.8
3.5 VFO INTERFACE SIGNALS........................
3.5.1
3.5.2
3.5.3
3.5.4
3.6 INTERFACE TIMING.....................
3.6.1
3.6.2
3.6.3
3.6.4
3.6.5
3.6.6
CONTENTS (cont'd)
Signal Levels.......................
Driver/Receiver Circuits............
Interface Lines.....................
Drive Select 1 Through 4 (DSX1 to 4).
Head Load (HDL) ......................
Step (STP).... ......................
Direction Select (DIR)..............
Side Select (SSL)...................
Write Gate (WGT)....................
Write Data (WDT)....................
Low Write Current (LWC).............
File Unsafe Reset (FUR).............
In U s e (USE)........................
Index (IDX).........................
Track 00 (TKO) . ......................
Dual-Sided (TSD)....................
Ready (RDY)... ......................
File Unsafe (FUS)...................
Read Data (RDT) ......................
Write Protect (PRT).................
Disk Change (DCG)...................
Modified Frequency Modulation Mode
(MFM)...............................
VFO Synchronization (SYC)...........
Standardized Read Data (SRD)........
Window (WID)........................
Power On Sequence...................
Drive Select........................
Step and Track 00...................
Access..............................
Write.......................
Read................................
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