DSP56366 View Datasheet(PDF) - Motorola => Freescale

Part Name

Description

Manufacturer

DSP56366

Digital Signal Processor

Motorola => Freescale 

ED33

Freescale Semiconductor, Inc.

Chip Errata

DSP56366 Digital Signal Processor

Mask:2J26D

Errata Description

Applies

to Mask

Description (added 12/16/98; identified as a Documentation errata 2/1/99): 2J26D

When Stack Extension mode is enabled, a use of the instructions BRKcc

or ENDDO inside do loops might cause an improper operation.

If the loop is non nested and has no nested loop inside it, the erratais

relevant only if LA or LC values are being used outside the loop.

Workaround:

If Stack Extension is used, emulate the BRKcc or ENDDO as in the

following examples. We split between two cases, finite loops and do

forever loops.

1) Finite DO loops (i.e. not DO FOREVER loops)

==============================================

BRKcc

Original code:

do #N,label1

.....

.....

do #M,label2

.....

.....

BRKcc

.....

.....

label2

.....

.....

label1

Will be replaced by:

do #N, label1

.....

.....

do #M, label2

.....

.....

Jcc

fix_brk_routine

.....

.....

DSP56366 Errata

 1997 -2001, Motorola

For Mor3e66ICnfEo2rJm26aDt_io0n_0On This Product,

Go to: www.freescale.com

NG 11/12/01 pg. 16 of 25

Share Link: