Connect Tech PCI-104, Руководство пользователя

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Connect Tech Xtreme/104 Plus, PCI-104 and PCI/104 Express Family User Manual
Revision 0.09
31
19.3 Xtreme/104 Plus RS423
Table 1
:
I/O Signal Assignments for RS-423 Models
Header
Port Number Header
Pin Number RS-423 Direction
1 1 RxD+ Input
2
CTS- Input
3
RxD- Input
4
RTSRef (RTS+) Signal Reference
5 TxDRef (TxD+) Signal Reference
6 CTS+ Input
7 TxD- Output
8 RTS- Output
9 GND Ground [1]
10 N/C No connection
2 11 RxD+ Input
12 CTS- Input
13 RxD- Input
14
RTSRef (RTS+) Signal Reference
15 TxDRef (TxD+) Signal Reference
16 CTS+ Input
17 TxD- Output
18 RTS- Output
19 GND Ground [1]
20
N/C No connection
3 21 RxD+ Input
22 CTS- Input
23 RxD- Input
24 RTSRef (RTS+) Signal Reference
25 TxDRef (TxD+) Signal Reference
26
CTS+ Input
27 TxD- Output
28 RTS- Output
29 GND Ground [1]
30 N/C No connection
4 31 RxD+ Input
32 CTS- Input
33 RxD- Input
34 RTSRef (RTS+) Signal Reference
35 TxDRef (TxD+) Signal Reference
36 CTS+ Input
37 TxD- Output
38 RTS- Output
39 GND Ground [1]
40
N/C No connection
Note: [1]
47Ω to GND. Ground is connected to the DC ground by a 47Ω
resistor to reduce ground loop current.