參數(shù)資料
型號: 2K30A
廠商: Motorola, Inc.
元件分類: 數(shù)字信號處理
英文描述: 16-bit fixed point DSP with Flash
中文描述: 具有閃存的 16 位定點 DSP
文件頁數(shù): 11/21頁
文件大?。?/td> 219K
代理商: 2K30A
Chip Errata
DSP56301 Digital Signal Processor
Mask:2K30A
DSP56301 Errata
1996-2002, Motorola
For More Information On This Product,
Go to: www.freescale.com
ng 12/19/02 pg. 11
ED33
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:
do #N,label1
.....
.....
do #M,label2
.....
.....
BRKcc
.....
.....
label2
.....
.....
label1
Will be replaced by:
do #N, label1
.....
.....
do #M, label2
.....
.....
Jcc fix_brk_routine
.....
.....
2K30A
Errata
Number
Document Update
Applies
to Mask
F
Freescale Semiconductor, Inc.
n
.
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