Document ID: 12224
Updated: Mar 04, 2008
Contents
Introduction
This document describes the EIA/TIA-232 cable assembly and pinouts (Data Terminal Equipment - DTE and Data Communications Equipment - DCE).
Prerequisites
Requirements
There are no specific requirements for this document.
Components Used
This document is not restricted to specific software and hardware versions.
The information in this document was created from the devices in a specific lab environment. All of the devices used in this document started with a cleared (default) configuration. If your network is live, make sure that you understand the potential impact of any command.
Conventions
Refer to Cisco Technical Tips Conventions for more information on document conventions.
EIA/TIA-232 Cable Assembly
EIA/TIA-232 DTE Cable Pinouts (DB-60 to DB-25)
Note: The arrows indicate signal direction: --> indicates DTE to DCE, and <-- indicates DCE to DTE.
| 60 Pin*1* | Signal | Description | Direction | 25 Pin | Signal |
|---|---|---|---|---|---|
| J1-50 J1-51 J1-52 | MODE_0 GND MODE_DCE | Shorting Group | -- | -- | -- |
| J1-46 | Shield GND | Single | -- | J2-1 | Shield GND |
| J1-41 Shield | TxD/RxD -- | Twisted pair no. 5 | --> -- | J2-2 Shield | RxD -- |
| J1-36 Shield | RxD/TxD -- | Twisted pair no. 9 | <-- -- | J2-3 Shield | RxD -- |
| J1-42 Shield | RTS/CTS -- | Twisted pair no. 4 | --> -- | J2-4 Shield | RTS -- |
| J1-35 Shield | CTS/RTS -- | Twisted pair no. 10 | <-- -- | J2-5 Shield | CTS -- |
| J1-34 Shield | DSR/DTR -- | Twisted pair no. 11 | <-- -- | J2-6 Shield | DSR -- |
| J1-45 Shield | Circuit GND -- | Twisted pair no. 1 | -- -- | J2-7 Shield | Circuit GND -- |
| J1-33 Shield | DCD/LL -- | Twisted pair no. 12 | <-- -- | J2-8 Shield | DCD -- |
| J1-37 Shield | TxC/NIL -- | Twisted pair no. 8 | <-- -- | J2-15 Shield | TxC -- |
| J1-38 Shield | TxC/TxCE -- | Twisted pair no. 7 | <-- -- | J2-17 Shield | RxC -- |
| J1-44 Shield | LL/DCD -- | Twisted pair no. 2 | --> -- | J2-18 Shield | LTST -- |
| J1-43 Shield | DTR/DSR -- | Twisted pair no. 3 | --> -- | J2-20 Shield | DTR -- |
| J1-39 Shield | TxCE/TxC -- | Twisted pair no. 6 | --> -- | J2-24 Shield | TxCE -- |
| *1* Any pin not referenced is not connected. | |||||
EIA/TIA-232 DCE Cable Pinouts (DB-60 to DB-25)
Note: The arrows indicate signal direction: --> indicates DTE to DCE, and <-- indicates DCE to DTE.
| 60 Pin*1* | Signal | Description | Direction | 25 Pin | Signal |
|---|---|---|---|---|---|
| J1-50 J1-51 | MODE_0 GND | Shorting Group | -- | -- | -- |
| J1-46 | Shield GND | Single | -- | J2-1 | Shield GND |
| J1-36 Shield | RxD/TxD -- | Twisted pair no. 9 | <-- -- | J2-2 Shield | TxD -- |
| J1-41 Shield | TxD/RxD -- | Twisted pair no. 5 | --> -- | J2-3 Shield | RxD -- |
| J1-35 Shield | CTS/RTS -- | Twisted pair no. 10 | <-- -- | J2-4 Shield | RTS -- |
| J1-42 Shield | RTS/CTS -- | Twisted pair no. 4 | --> -- | J2-5 Shield | CTS -- |
| J1-43 Shield | DTR/DSR -- | Twisted pair no. 3 | --> -- | J2-6 Shield | DSR -- |
| J1-45 Shield | Circuit GND -- | Twisted pair no. 1 | -- -- | J2-7 Shield | Circuit GND |
| J1-44 Shield | LL/DCD -- | Twisted pair no. 2 | --> -- | J2-8 Shield | DCD -- |
| J1-39 Shield | TxCE/TxC -- | Twisted pair no. 7 | --> -- | J2-15 Shield | TxC -- |
| J1-40 Shield | NIL/RxC -- | Twisted pair no. 6 | --> -- | J2-17 Shield | RxC -- |
| J1-33 Shield | DCD/LL -- | Twisted pair no. 12 | <-- -- | J2-18 Shield | LTST -- |
| J1-34 Shield | DSR/DTR -- | Twisted pair no. 11 | <-- -- | J2-20 Shield | DTR -- |
| J1-38 Shield | RxC/TxCE -- | Twisted pair no. 8 | <-- -- | J2-24 Shield | TxCE -- |
| *1* Any pin not referenced is not connected. | |||||
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Refer to Cisco Technical Tips Conventions for information on conventions used in this document.