high speed parallel access to the CPU

Harald Welte laforge at openmoko.org
Tue May 29 15:53:01 CEST 2007

On Fri, May 25, 2007 at 01:53:21PM +0100, openmoko at mauve.plus.com wrote:
> > On Wed, May 23, 2007 at 02:15:03PM +0200, Iztok Jeras wrote:
> >> I there a high speed (50MHz) at least 8bit bus on the Neo1973 device.
> >
> > no, sorry.
> Well - there is the LCD output, but that's probably not suitable, the
> least part is that you have to unplug the LCD and plug in your own
> flex-connector.

The LCM is a dedicated interface of the LCM controller.  yes, you can
switch the ports to GPIO input or output pins, but it is not a bus, and
you would have to bit-bang data.

> There is SPI - which is solderable to, but you will not get close to
> 50MHz on an 8 bit port.

SPI is IIRC 20MHz (serial, 1bit) max. on the Samsung 2410/2440 

- Harald Welte <laforge at openmoko.org>          	        http://openmoko.org/
Software for the world's first truly open Free Software mobile phone

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