TABLE OF CONTENTS
FEATURES.................................................................................................................................................1
GENERAL DESCRIPTION.........................................................................................................................3
PIN CONFIGURATION...............................................................................................................................8
PIN DESCRIPTION.....................................................................................................................................9
BUFFER TYPE PER PIN ........................................................................................................................9
B
UFFER
T
YPE
S
UMMARY
..............................................................................................................................15
O
UTPUT
D
RIVERS
.......................................................................................................................................16
FUNCTIONAL DESCRIPTION .................................................................................................................17
H
OST
P
ROCESSOR
I
NTERFACE
.......................................................................................................................17
FLOPPY DISK CONTROLLER
.....................................................................................................................17
M
ODES
O
F
O
PERATION
................................................................................................................................17
Floppy Modes
.....................................................................................................................................17
Interface Modes
..................................................................................................................................18
F
LOPPY
D
ISK
C
ONTROLLER
I
NTERNAL
R
EGISTERS
.............................................................................................18
STATUS REGISTER A (SRA)
...............................................................................................................18
STATUS REGISTER B (SRB)
...............................................................................................................21
DIGITAL OUTPUT REGISTER (DOR)
....................................................................................................23
TAPE DRIVE REGISTER (TDR)
............................................................................................................24
MAIN STATUS REGISTER (MSR)
.........................................................................................................25
DATA RATE SELECT REGISTER (DSR)
...............................................................................................26
DATA REGISTER (FIFO)
......................................................................................................................28
DIGITAL INPUT REGISTER (DIR)
.........................................................................................................28
CONFIGURATION CONTROL REGISTER (CCR)
...................................................................................29
S
TATUS
R
EGISTER
E
NCODING
.......................................................................................................................31
R
ESET
......................................................................................................................................................32
RESET Pin (Hardware Reset)
...............................................................................................................32
DOR Reset vs. DSR Reset (Software Reset)
.........................................................................................33
DMA T
RANSFERS
.......................................................................................................................................33
C
ONTROLLER
P
HASES
.................................................................................................................................33
Command Phase
..................................................................................................................................33
Execution Phase
.................................................................................................................................33
Result Phase
.......................................................................................................................................34
C
OMMAND
S
ET
/D
ESCRIPTIONS
......................................................................................................................35
I
NSTRUCTION
S
ET
.......................................................................................................................................37
D
ATA
T
RANSFER
C
OMMANDS
........................................................................................................................43
Read Data
...........................................................................................................................................43
Read Deleted Data
...............................................................................................................................45
Read A Track
......................................................................................................................................45
Write Data
...........................................................................................................................................46
Write Deleted Data
..............................................................................................................................47
Verify
...................................................................................................................................................47
Format A Track
...................................................................................................................................48
C
ONTROL
C
OMMANDS
..................................................................................................................................49
Read ID
...............................................................................................................................................49
Recalibrate
..........................................................................................................................................49
Seek
....................................................................................................................................................50
Sense Interrupt Status
...........................................................................................................................50
Sense Drive Status
..............................................................................................................................51
Specify
................................................................................................................................................51
SMSC DS – FDC37N3869
Page 4
Rev. 10/25/2000
SMSC [ SMSC CORPORATION ]
