MATLAB EMBEDDED IDE LINK 4 - FOR USE WITH TEXAS INSTRUMENTS CODE COMPOSER STUDIO Guide de l'utilisateur télécharger pdf (Page 490)

100

101

Tar get Preferences

This parameter corresponds to bits 15-0

(DST_WRAP_SIZE) in the Destination Wrap

Size Register (DST_WRAP_SIZE ).

Note When you select Use DMA (with C28x3x) the

C280x/C28x3x ADC block, the value of this parameter

is 65536.

Source

The following parameters conﬁgure the D MA channel

inputs.

• Begin address

Set the starting address for the current source address

pointer. The DMA module points to this address at the

beginning of a transfer and returns to it as speciﬁed by

the SRC w rap parameter.

This parameter corresponds to bits 21-0 (BEG ADDR) in

the Active Source Begin Register (SRC_BEG_A DDR).

Note When you select Use DMA (with C28x3x) the

C280x/C28x3x ADC block, the v alue of the source Begin

address is:

— 0xB00 if the ADC block Module is

A or A and B

(Interrupt source is SEQ1INT).

— 0xB08 If the ADC block Module is

B (Interrupt

source is

SEQ2INT).

• Burst step

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

decrement the current address pointer before the nex t

9-98

1 2 ... 485 486 487 488 489 490 491 492 493 494 495 ... 574 575

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MATLAB EMBEDDED IDE LINK 4 - FOR USE WITH TEXAS INSTRUMENTS CODE COMPOSER STUDIO Guide de l'utilisateur Page 490

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