MATLAB EMBEDDED IDE LINK 4 - FOR USE WITH TEXAS INSTRUMENTS CODE COMPOSER STUDIO Guía de usuario descargar pdf (Pagina 494)

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101

Tar get Preferences

To disable incrementing or decrementing the address

pointer, set Burst step to 0. For example, because

McBSP does no t u se FIFO, you must conﬁgure D MA to

maintain the correct sequence of the McBSP data by

moving each word of the data individually. Accordingly,

when you use DMA to transmit or receive McBSP data,

set Burst size to 1 word and Burst step to 0.

This parameter corresponds to bits 15-0

(DSTBURSTSTEP) in the Destination Burst

Step Size Register (DST_BURST_STEP).

Note This parameter is based on a 16-bit word size. If

you set Data size to

32 bit,doublethevalueofthis

parameter.

Note When you select Use DMA (with C28x3x) the

C280x/C28x3x ADC block, this parameter is 1.

• Transfer step

Set the number of 16-bit words by which to increment or

decrement the current address pointer before the nex t

transfer. Enter a value from –4096 (decrement) to 4095

(increment).

To disable incrementing or decrementing the address

pointer, set Transfer step to 0.

This parameter corresponds to bits 15-0

(DSTTRANSFERSTEP) Destination Transfer

Step Size Register (DST_TRANSFER_STEP).

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MATLAB EMBEDDED IDE LINK 4 - FOR USE WITH TEXAS INSTRUMENTS CODE COMPOSER STUDIO Guía de usuario Pagina 494

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