TABLE OF CONTENTS
GENERAL DESCRIPTION................................................................................................................. 2
PIN CONFIGURATION ...................................................................................................................... 7
PIN DESCRIPTION ............................................................................................................................. 8
BUFFER TYPE PER PIN........................................................................................................................ 8
B
UFFER
T
YPE
S
UMMMARY
..................................................................................................................... 14
O
UTPUT
D
RIVERS
................................................................................................................................... 14
FUNCTIONAL DESCRIPTION........................................................................................................ 16
H
OST
P
ROCESSOR
I
NTERFACE
................................................................................................................ 16
FLOPPY DISK CONTROLLER ....................................................................................................... 16
M
ODES
O
F
O
PERATION
.......................................................................................................................... 16
Floppy Modes....................................................................................................................................
16
Interface Modes
................................................................................................................................ 16
F
LOPPY
D
ISK
C
ONTROLLER
I
NTERNAL
R
EGISTERS
................................................................................. 17
STATUS REGISTER A (SRA).........................................................................................................
17
STATUS REGISTER B (SRB) ............................................................................................................ 18
DIGITAL OUTPUT REGISTER (DOR) ............................................................................................ 20
TAPE DRIVE REGISTER (TDR)
................................................................................................... 22
MAIN STATUS REGISTER (MSR) .................................................................................................... 23
DATA RATE SELECT REGISTER (DSR).......................................................................................... 24
DATA REGISTER (FIFO) ................................................................................................................. 26
DIGITAL INPUT REGISTER (DIR).................................................................................................. 27
CONFIGURATION CONTROL REGISTER (CCR) .......................................................................... 28
S
TATUS
R
EGISTER
E
NCODING
................................................................................................................ 29
R
ESET
..................................................................................................................................................... 31
RESET Pin (Hardware Reset) ........................................................................................................... 31
DOR Reset vs. DSR Reset (Software Reset)....................................................................................... 31
DMA T
RANSFERS
.................................................................................................................................. 31
C
ONTROLLER
P
HASES
............................................................................................................................ 31
Command Phase................................................................................................................................ 31
Execution Phase ................................................................................................................................ 32
Result Phase ...................................................................................................................................... 33
C
OMMAND
S
ET
/D
ESCRIPTIONS
............................................................................................................... 33
I
NSTRUCTION
S
ET
................................................................................................................................... 36
D
ATA
T
RANSFER
C
OMMANDS
................................................................................................................ 45
Read Data.......................................................................................................................................... 45
Read Deleted Data ............................................................................................................................ 47
Read A Track ..................................................................................................................................... 48
Write Data ......................................................................................................................................... 48
Write Deleted Data............................................................................................................................ 49
Verify ................................................................................................................................................. 49
Format A Track ................................................................................................................................. 49
C
ONTROL
C
OMMANDS
............................................................................................................................ 51
Read ID.............................................................................................................................................. 51
Recalibrate ........................................................................................................................................ 52
Seek.................................................................................................................................................... 52
Sense Interrupt Status........................................................................................................................ 52
Sense Drive Status ............................................................................................................................. 53
Specify ............................................................................................................................................... 53
Configure........................................................................................................................................... 54
Version............................................................................................................................................... 54
SMSC DS – FDC37N769
Page 3 of 137
Rev. 02-16-07
DATASHEET
SMSC [ SMSC CORPORATION ]
