Hello,
Both the SPI interfaces of LPC23xx are used up in my design. Is it possible to use SD/MMC interface to connect simple SPI Flash ?

Thanks

RM

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You can have several peripherals on the same SPI bus. They all should
have chip selects.

Sutton

Sutton Mehaffey
Lookout Portable Security
4040 Royal Dr. #100
Kennesaw, GA 30144
800-207-6269, 770-514-7999, 770-514-1285 FAX
s...@lookoutportablesecurity.com
On 11/2/2011 8:03 PM, rm_lucknow wrote:
>
> Hello,
> Both the SPI interfaces of LPC23xx are used up in my design. Is it
> possible to use SD/MMC interface to connect simple SPI Flash ?
>
> Thanks
>
> RM


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I plan to use both the SSP/SPI ports in TI mode withe Frame pulses. In addition to this, I need to interface SPI flash memory. I could use LPC 1778, but was wondering if it is possible to stay with my existing 23xx design.

Thanks

RM

--- In l..., Sutton Mehaffey wrote:
>
> You can have several peripherals on the same SPI bus. They all should
> have chip selects.
>
> Sutton
>
> Sutton Mehaffey
> Lookout Portable Security
> 4040 Royal Dr. #100
> Kennesaw, GA 30144
> 800-207-6269, 770-514-7999, 770-514-1285 FAX
> sutton@...
> On 11/2/2011 8:03 PM, rm_lucknow wrote:
> >
> > Hello,
> > Both the SPI interfaces of LPC23xx are used up in my design. Is it
> > possible to use SD/MMC interface to connect simple SPI Flash ?
> >
> > Thanks
> >
> > RM
> >
> >
>
>

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The MCI of the 23xx/24xx series used sd-bus and is therefore not an spi port.
Depending on the speed you want from the spi you could use an software spi.

Kevin.

--- In l..., "rm_lucknow" wrote:
>
> I plan to use both the SSP/SPI ports in TI mode withe Frame pulses. In addition to this, I need to interface SPI flash memory. I could use LPC 1778, but was wondering if it is possible to stay with my existing 23xx design.
>
> Thanks
>
> RM
>
> --- In l..., Sutton Mehaffey wrote:
> >
> > You can have several peripherals on the same SPI bus. They all should
> > have chip selects.
> >
> > Sutton
> >
> > Sutton Mehaffey
> > Lookout Portable Security
> > 4040 Royal Dr. #100
> > Kennesaw, GA 30144
> > 800-207-6269, 770-514-7999, 770-514-1285 FAX
> > sutton@
> >
> >
> > On 11/2/2011 8:03 PM, rm_lucknow wrote:
> > >
> > > Hello,
> > > Both the SPI interfaces of LPC23xx are used up in my design. Is it
> > > possible to use SD/MMC interface to connect simple SPI Flash ?
> > >
> > > Thanks
> > >
> > > RM
> > >
> > >
> >
> >
> >
>

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