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886LCD/ATX(GV) -/ATXU(GV)
KTD-00647-C
Public User Manual
Date: 2007-02-08 Page
28 of 71
4.7
Floppy Disk Connector (FDC1)
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 DS1#
-
-
-
-
-
PWR
GND 7
8
INDEX#
IS
-
330R
-
-
PWR
GND 9
10
MOTEA#
OC
/48
-
-
-
PWR
GND 11
12
DRVB#
OC
/48
-
-
-
PWR
GND 13
14
DRVA#
OC
/48
-
-
-
PWR
GND 15
16
MOTEB#
OC
/48
-
-
-
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.
MOTEB#
This output signal enables the motor in floppy disk drive B.
DRVA#
Active low output signal to select floppy disk drive A.
DRVB#
Active low output signal to select floppy disk drive B.
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.