libftdi Archives

Subject: Re: CBUS bitbang disconnects serial interface

From: DJ Delorie <dj@xxxxxxxxxxx>
To: libftdi@xxxxxxxxxxxxxxxxxxxxxxx
Date: Tue, 27 Jul 2010 18:27:41 -0400
> Offhand, how do you control CBUS4? There aren't enough bits in the
> bitmode call to control it.

Read the spec.  CBUS4 cannot be controlled by bit-bang, it can only be
used for one of the other programmable functions.  I use it for power
control, for example, or clock output, or an LED.

In my schematic symbol for the FT232R, that pin is labelled
"CBUS4/NO_IO" so I don't forget that.

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