Pentel T15VG 用户手册
Chapter 5 Installation
24
TI5VG Pentium VP3 ATX Motherboard User’s Manual
5.6 J4, J6: Serial Ports
The onboard serial ports of the TI5VG 10, J4 and J6, are two DB-9
external connectors. The following table shows the pin-out assignments
of the these connectors.
external connectors. The following table shows the pin-out assignments
of the these connectors.
Pin #
Signal Name
Pin #
Signal Name
1
DCD, Data carrier detect
6
DSR, Data set ready
2
RXD, Receive data
7
RTS, Request to send
3
TXD, Transmit data
8
CTS, Clear to send
4
DTR, Data terminal ready
9
RI, Ring indicator
5
GND, ground
10
Not Used
J5 (Parallel Port)
J4 (COM1 )
J6 (COM2)
5.7 J5: Parallel Port Connector
J5 is a DB-25 external connector. The following table describes the pin-
out assignments of this connector.
out assignments of this connector.
Signal Name
Pin #
Pin #
Signal Name
Line printer strobe
1
14
AutoFeed
PD0, parallel data 0
2
15
Error
PD1, parallel data 1
3
16
Initialize
PD2, parallel data 2
4
17
Select
PD3, parallel data 3
5
18
Ground
PD4, parallel data 4
6
19
Ground
PD5, parallel data 5
7
20
Ground
PD6, parallel data 6
8
21
Ground
PD7, parallel data 7
9
22
Ground
ACK, acknowledge
10
23
Ground
Busy 11
24
Ground
Paper empty
12
25
Ground
Select 13
N/A
N/A