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Copyright © 2012 Future Technology Devices International Limited

TTL-232R-RPi

Version 1.0

Document Reference No.: FT_000722

Clearance No.: FTDI# 296

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Operational Descriptions

TTL-232R-RPi is a USB-to-TTL Serial UART debug cable. It is designed to be used with the Raspberry Pi

(RPi) Linux-based computer. This cable provides a fast, simple way for a PC to interface with an RPi, to

carry out program analysis and debugging.

This cable is electrically configured to process and drive +3.3 V logic level UART signals. The USB side of

the cable is USB powered and USB 2.0 Full Speed compatible, supporting data transfer rates up to 3

Mbaud. Spanning 1.0m in length, the TTL-232R-RPi debug cable connects directly to the serial port on

the RPi board. The RPi’s serial port can output kernel debug messages even if it has not been completely

booted.

The following serial communication parameters should be used to access the serial/debugger port on

Raspberry Pi board:

* Speed:

115200 baud

* Bits:

8

* Parity:

None

* Stop Bits:

1

* Flow Control: None

For more information about the Raspberry Pi Computer refer to the Raspberry Pi Foundation web site:

http://www.raspberrypi.org/

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Functional Descriptions

4.1

TTL-232R-RPi Wire Configuration

The following Figure 4-1 shows the cable signals and the wire colours for these signals on the TTL-232R-

RPi generic cables.

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CABLE 1.0m

1

2

3

3x single pole

0.1in pitch header

BLACK

ORANGE

YELLOW

Figure 4-1 – TTL-232R-RPi Debug cable Pin Out

2.54mm

+/-0.05

2.60mm

+/-0.05

14.0mm

+/-0.2

Figure 4-2 – TTL-232R-RPi Debug cable, Single Pole Header Mechanical Details