RS-232
What is DCE and DTE?
DCE stands for Device Communications Equipment.
DTE stands for Device Terminal Equipment.
| Signal | DCE | DTE |
|---|---|---|
| RX | out | in |
| TX | in | out |
| CTS | out | in |
| RTS | in | out |
On the NXP i.MX6 the convention is a little different:
| Signal | i.MX6 DCE | i.MX6 DTE |
|---|---|---|
| RX | in | out |
| TX | out | in |
| CTS | out | in |
| RTS | in | out |
Bluetooth module and modems are generally DTE while computer are DCE.
Resources
| Pin-out | http://www.db9-pinout.com/db9-pinout/db9-pinout.gif |
