cee4max wrote:
>
> I am using ADSP 21364 processor for audio processsing application.
>
> For interfacing ADSP21364 to system USB is used.FT232R (USB to UART
>
> convertor) is used for that purpose.Serial port of ADSP21364 is used for
>
> USB interface.But in application note EE191 its given than serial port
>
> in UART mode,the processor has to poll the serial frame sync pin in each
>
> serial clock signal.Is it mean the core is idle in these condition?
>
> Can the processor be used for some other purpose during this period?
>
> Regards
> saju
>
> I haven't reviewed this ap note recently in detail, but you can
> certainly use the DSP for other calculations while implementing a UART
> function using a SPORT. We did this with an ADSP-21261 which for this
> situation is identical (except for core clock).
It would be much easier to use an ADSP-21369 or ADSP-21371 since there
is a hardware UART on the device. We usually use the FT245R with the
SHARC and avoid the UART altogether. In this situation, we still treat
the USB as a fast com port on the PC side.
Al Clark
Danville Signal Processing, Inc.
> useusese the _._,_.___
>
>