RS-232 (also called serial, COM port) is still common interface and most PC are still equiped with serial interface connector. Usually it is hidden and available as internal header connector only.
There is 2 flavor of header (ex: Motherboard header) (AT/EVEREX) or (DTK/INTEL) witch match the IDC10.
You need an according port ( with the accordingly cable layout) to the flavor of header you have!
Example: If you want to have a DE-9 put on a 10pinIDC you HAVE TO put an RS-232 Port with pitch header (DTK/INTEL) or with pitch header (AT/Everex) depending of the flavour of the pinout layer!
RS232 Motherboard header pinout ( AT/EVEREX )
| IDC internal (newer) AT/EVEREX |
Signal Name |
Description |
PS RS232 DE-9 pin number |
|---|---|---|---|
| 1 | DCD | Data Carrier Detect | 1 |
| 2 | RXD | Receive Data | 2 |
| 3 | TXD | Transmit Data | 3 |
| 4 | DTR | Data Terminal Ready | 4 |
| 5 | GND | System Ground | 5 |
| 6 | DSR | Data Set Ready | 6 |
| 7 | RTS | Request to Send | 7 |
| 8 | CTS | Clear to Send | 8 |
| 9 | RI | Ring Indicator | 9 |
RS232 Motherboard header pinout ( DTK/INTEL )
|
IDC internal |
Signal Name | Description |
PS RS232 DE-9 pin number |
|---|---|---|---|
| 1 | DCD | Data Carrier Detect | 1 |
| 2 | DSR | Data Set Ready | 6 |
| 3 | RXD | Receive Data | 2 |
| 4 | RTS | Request to Send | 7 |
| 5 | TXD |
Transmit Data | 3 |
| 6 | CTS |
Clear to Send | 8 |
| 7 | DTR |
Data Terminal Ready | 4 |
| 8 | RI |
Ring Indicator | 9 |
| 9 | GND |
System Ground | 5 |
Pin 10 removed in connector. Internal IDC connnector wired to external port with a simple flat ribbon cable.
PC serial port pinout signals
Since PC serial port is based on RS-232 standard, you may find signal details in the RS-232 interface pinout document
correct
incorrect