SMC Networks 486DX4 User Manual
Page 28
AR-B1462 User¡
¦s Guide
3-10
(3) TTL Connector (CN16)
1
9
3
5
7
8
10
6
4
2
Figure 3-17 CN16: TTL Connector
CN16
Signal
CN16
Signal
1
TTLOP0
2
TTLIP0
3
TTLOP1
4
TTLIP1
5
TTLOP2
6
TTLIP2
7
TTLOP3
8
TTLIP3
9
GROUND
10
VCC
Table 3-4 TTL Pin Assignment
(4) RS-232 Connector (CN4)
There are four serial ports with EIA RS-232C interface on the AR-B1462. To configure these serial ports, use the
BIOS Setup program, and adjust the jumpers on M5 and SW1.
1
3
5
21
19
17
15
13
11
9
7
37
35
33
31
29
27
25
23
39
14
12
10
8
6
4
2
30
28
26
24
22
20
18
16
40
38
36
34
32
5
4
3
2
1
6
7
8
9
COM-A
5
4
3
2
1
6
7
8
9
COM-B
5
4
3
2
1
6
7
8
9
COM-C
5
4
3
2
1
6
7
8
9
COM-D
Figure 3-18 CN4: RS-232 Connector
CN4
DB-9
Signal
CN4
DB-9
Signal
1
A-1
-DCDA
2
A-6
-DSRA
3
A-2
RXDA
4
A-7
-RTSA
5
A-3
TXDA
6
A-8
-CTSA
7
A-4
-DTRA
8
A-9
-RIA
9
A-5
GNDA
10
--
GNDA
11
B-1
-DCDB
12
B-6
-DSRB
13
B-2
RXDB
14
B-7
-RTSB
15
B-3
TXDB
16
B-8
-CTSB
17
B-4
-DTRB
18
B-9
-RIB
19
B-5
GNDB
20
--
GNDB
21
C-1
-DCDC
22
C-6
-DSRC
23
C-2
RXDC
24
C-7
-RTSC
25
C-3
TXDC
26
C-8
-CTSC
27
C-4
-DTRC
28
C-9
-RIC
29
C-5
GNDC
30
--
GNDC
31
D-1
-DCDD
32
D-6
-DSRD
33
D-2
RXDD
34
D-7
-RTSD
35
D-3
TXDD
36
D-8
-CTSD
37
D-4
-DTRD
38
D-9
-RID
39
D-5
GNDD
40
--
GNDD
Table 3-5 RS-232 Connector Pin Assignment