PC 815
3
User
’
s
Manual
24
HardwareInstallation
2.5 Serial Port Interface
The
PC 8153
has
three
onboard
serial
ports,
COM1,
COM2, and
COM3.
COM1
is
RS-232(default)/422/485
Port
Connector
while
COM2
and
COM3
are
RS-232
Port
Connectors.
The
connector,
COM1,
COM2,
COM3
are
DB-9
connector,
and
the
following
table
shows
the
pin
assignments
of
this
connector.
Pin
Signal
Signal
Pin
DCD,
Data
1
6
DSR,
Data
Set
Ready
Carrier
Detect
RXD,
Receive
RTS,
Request
To
2
7
Data
Send
TXD,
Transmit
3
8
CTS,
Clear
To
Send
Data
DTR,
Data
Terminal
Ready
RI/+5V/+12V
Ring
Indicator
4
9
5
GND,
Ground
2.6 DVI-I
The
PC 8153
has
a
DVI-I
interface
connector.
It
is
able
to
connect
to
an
expansion
CRT
monitor,
and
the
system
can
display
on
both
the
flat
panel
and
the
CRT
simultaneously.
Pin
Signal
Pin
Signal
1
2
TX2+
TX2-
3
4
Ground
CRT_SPD_CLK
5
6
CRT_SPD
DATA
DVI_SPD_CLK
7
8
DVI_SPD
DATA
CRT-VSYNC
9
10
TX1-
TX1+
11
Ground
12
NC
13
NC
14
VGAVCC
15
16
Ground
FPDETECT
17
TX0-
18
TX0+