DSP56300 Motorola Inc, DSP56300 Datasheet - Page 11

DSP56300

Manufacturer Part Number

DSP56300

Description

DSP56301 Digital Signal Processor

Manufacturer

Motorola Inc

Datasheet

1.DSP56300.pdf (21 pages)

Current page: 11 of 21
Download datasheet (220Kb)

Errata

Number

ED33

DSP56301 Errata

 1996-2002, Motorola

Document Update

Description (added 12/16/98; identified as a Documentation errata

2/1/99):

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:

label2

label1

Will be replaced by:

Freescale Semiconductor, Inc.

DSP56301 Digital Signal Processor

For More Information On This Product,

do #N,label1

.....

do #N, label1

.....

301CE2K30A_0_8

Go to: www.freescale.com

do #M,label2

.....

BRKcc

.....

do #M, label2

.....

Jcc

.....

Mask:2K30A

Chip Errata

fix_brk_routine

ng 12/19/02 pg. 11

Applies

to Mask

2K30A

DSP56300 Motorola Inc, DSP56300 Datasheet - Page 11

DSP56300

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