Serial interface

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Revision as of 21:30, 3 July 2023 by Tchan (talk | contribs) (added link to Coder's_cable page)
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The Dreamcast has a serial interface on the back of the console used for several peripherals and for console debugging.

PCB Serial Port with Labeled Pins
Serial connector pinout
Pin Description
1 +5V
2 SCK
3 Ground
4 RX2
5 TX2
6 RTS
7 CTS
8 Ground
9 Reset
10 +3.3V
Serial Connection Pinout for Test Points on Bottom of Board


A SCIF loopback connection can be created to allow a Dreamcast to conduct and pass the SCIF test on the official Sega DC Checker diagnostics software by connecting pin 4 (RX2) to pin 5 (TXD) and connecting pin 6 (RTS) to pin 7 (CTS).


The serial interface is used by the Coder's_cable


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