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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(diǎn) DSP |
| 文件頁數(shù)： | 16/21頁 |
| 文件大小： | 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. 16
ED34
Description (added 1/5/99; identified as a Documentation errata 2/1/99):
When stack extansion is enabled, the read result from stack may be
improper if two previous executed instructions cause sequential read and
write operations with SSH. Two cases are possible:
Case 1:
For the first executed instruction: move from SSH or bit manipulation on
SSH (i.e. jclr, brclr, jset, brset, btst, bsset, jsset, bsclr, jsclr).
For the second executed instruction: move to SSH or bit manipulation on
SSH (i.e. jsr, bsr, jscc, bscc).
For the third executed instruction: an SSL or SSH read from the stack
result may be improper - move from SSH or SSL or bit manipulation on
SSH or SSL (i.e., bset, bclr, bchg, jclr, brclr, jset, brset, btst, bsset, jsset,
bsclr, jsclr).
Workaround:
Add two NOP instructions before the third executed instruction.
Case 2:
For the first executed instruction: bit manipulation on SSH (i.e. bset, bclr,
bchg).
For the second executed instruction: an SSL or SSH read from the stack
result may be improper - move from SSH or SSL or bit manipulation on
SSH or SSL (i.e., bset, bclr, bchg, jclr, brclr, jset, brset, btst, bsset, jsset,
bsclr, jsclr).
Workaround:
Add two NOP instructions before the second executed instruction.
Pertains to:
DSP56300 Family Manual, Appendix B, add a new section
called
“
Stack Extension Enable Restrictions.
”
Cover all cases. Also, in
Section 6.3.11.15, add a cross reference to this new section.
2K30A
Errata
Number
Document Update
Applies
to Mask
F
Freescale Semiconductor, Inc.
n
.
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