FIC A360 User Manual
Pin Assignments
B.2 Serial Port Connector
The pin assignment of the serial (COM1) port connector is as follows:
No
PIN ASSIGMENT (by: sort)
DESCRIPTION
1 DCDA#_T:I
Active low Data Carrier Detect inputs for the serial port.
2 SINA_T:I
Receiver serial data input for port 1.
3 SOUTA_12:O
Transmit serial data output for port 1.
4 DTRA#_6:O
Active low Data Terminal Ready outputs for the serial port.
5 GND
Ground
6 DSRA#_T:I
Active low Data Set Ready inputs for the serial port.
7 RTSA#_6:O
Active low Request to Send Outputs for the serial port.
8 CTSA#_T:I
Active low Clear to Send inputs for the serial port.
9 RI#_T:I
Active low Ring Indicator inputs for the serial port.
B.3 Parallel
Port
Connector
The pin assignment of the parallel/printer (LPT1) port connector is as follows:
No PIN
ASSIGMENT(by:
sort)
Description
1
STB#/DS0#_D14/_P14/_D12:O
An active low pulse on this output is used to strobe
the printer data into the printer.
The STROBE output is the complement of Bit 0 of the
printer control register.
Refer to parallel port description for use of this pin in
ECP and EPP mode.
Active low outputs select driver 0
the printer data into the printer.
The STROBE output is the complement of Bit 0 of the
printer control register.
Refer to parallel port description for use of this pin in
ECP and EPP mode.
Active low outputs select driver 0
2
PD0/INDEX3#_P14/_S:IO/I
Port data 0
This active low Schmidt trigger input senses from the
disk drive that the head is positioned over the
beginning of a track as marked by an index hole.
This active low Schmidt trigger input senses from the
disk drive that the head is positioned over the
beginning of a track as marked by an index hole.
3
PD1/TRK0#_P14/_S:IO/I
Port data 1
This active low Schmidt trigger input senses from the
disk drive that the head is positioned over the
outermost track.
This active low Schmidt trigger input senses from the
disk drive that the head is positioned over the
outermost track.
4
PD2/WRTPRT#_P14/_S:IO/I
Port data 2
This active low Schmidt trigger input senses from the
disk drive that a disk is write protected.
Any write command is ignored.
This active low Schmidt trigger input senses from the
disk drive that a disk is write protected.
Any write command is ignored.
5
PD3/RDATA#_P14/_S:IO/I
Port data 3
Raw serial bit stream from the disk drive, low active.
Each falling edge represents a flux transition of the
encoded data.
Raw serial bit stream from the disk drive, low active.
Each falling edge represents a flux transition of the
encoded data.
6
PD4/DSKCHG_P14/_S:IO/I
Port data 4
This input senses that the driver door is open or that
the diskette has possibly been changed since the last
drive selection.
This input senses that the driver door is open or that
the diskette has possibly been changed since the last
drive selection.
7
PD5_P14:IO
Port data 5
8
PD6/MTR0#_P14/_D12:IO/O
Port data 6
This active low outputs select motor drives 0.
This active low outputs select motor drives 0.
9
PD7_P14:IO
Port data 7
10 ACK#/DS1#_T_D12:I/O
A low active output from the printer indicating that it
has received the data and is ready to accept new
data.
Bit 6 of the printer status register reads the ACK#
Input.
Refer to parallel port description for use of this pin in
ECP and EPP mode.
has received the data and is ready to accept new
data.
Bit 6 of the printer status register reads the ACK#
Input.
Refer to parallel port description for use of this pin in
ECP and EPP mode.
11 BUSY/MRT1#_T/_D12:_I/O
This is a status output from the printer, a high
indicating that the printer is not ready to receive new
data.
indicating that the printer is not ready to receive new
data.
B-2
FIC A550 Service Manual