KT690 Family
KTD-00738-C Public User Manual Date: 2008-09-16 Page 44 of 91
4.10 Floppy connector (FLOPPY).
The KT690 supports connection of one standard 1.44M Floppy Disk Drive. The Floppy Drive shall be
connected as A: (The “last” connector on a standard Floppy Disk cable kit).
Note
Pull
U/D
Ioh/Iol
Type
Signal
PIN
Signal
Type
Ioh/Iol
Pull
U/D
Note
- - PWR GND 1 2 DENSEL0# OC /48 -
- - PWR GND 3 4 NC - - -
- - PWR GND 5 6 NC - - -
- - PWR GND 7 8 INDEX# IS - 330R
- - PWR GND 9 10 MOTEA# OC /48 -
- - PWR GND 11 12 NC - - -
- - PWR GND 13 14 DRVA# OC /48 -
- - PWR GND 15 16 NC - - -
- - PWR GND 17 18 DIR# OC /48 -
- - PWR GND 19 20 STEP# OC /48 -
- - PWR GND 21 22 WDATA# OC /48 -
- - PWR GND 23 24 WGATE# OC /48 -
- - PWR GND 25 26 TRK0# IS - 330R
- - PWR GND 27 28 WPT# IS - 330R
- - - NC 29 30 RDATA# IS - 330R
- - PWR GND 31 32 SIDE1# OC /48 -
- - - NC 33 34 DSKCHG# IS - 330R
Signal Description:
RDATA# Read Disk Data, active low, serial data input from the floppy disk drive.
WDATA# Write Disk Data, active low, serial data output to the floppy disk drive.
WGATE# This output signal enables the head of the selected disk drive to write to the disk.
MOTEA# This output signal enables the motor in floppy disk drive A.
DRVA# Active low output signal to select floppy disk drive A.
SIDE1# This output signal selects side of the disk in the selected drive.
DIR# This signal controls the direction of the floppy disk drive head movement during a seek
operation. A low level request steps through centre.
STEP# This output signal supplies step pulses to move the head during seek operations.
DENSEL0# This output indicates whether a low data rate (250/300kbps at low level) or a high data
rate (500/1000kbps at high level) has been selected.
TRK0# Floppy Disk Track 0, active low input to indicate that the head of the selected drive is at
track 0.
INDEX# Floppy Disk Index, active low input indicates the beginning of a disk track.
WPT# Active low input signal indicating that the selected drive contains a write protected disk.
DSKCHG# Input pin that senses whether the drive door has been opened or the diskette has been
changed.
To Next Page
Loading...
