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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 DSP |
| 文件頁數(shù)： | 20/21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. 20
ED46
Description (added 12/ 10/ 2001):
The following sequence gives erroneous results:
1) A different slave on the bus terminates a transaction (for
example, assertion of "stop" ).
2) Immediately afterwards (no more than one PCI clock), the chip
’
s
memory space control/ status register at PCI address ADDR is read
in a single-word transaction. In this transaction, the chip drives to
the bus the data corresponding to the register at PCI address
ADDR+4, instead of the requested ADDR.
NOTE: ADDR is the PCI address of one of the following registers:
HCTR (ADDR=$10) , HSTR (ADDR=$14), or HCVR (ADDR=$18),
and not the data register.
Workaround:
The user should find a way to set/clear at least one bit in the control/status
registers to clearly differentiate between them. For example, you can set
HNMI in the HCVR, as this bit will always be 0 in the HSTR. If NMI
cannot be used, then HCVR{HV4,HV3,HV2} and
HSTR{HF5,HF4,HF3} can be set in any combinations that distinguish
between HCVR and HSTR data reads.
Pertains to
:
DSP56301 User’s Manual
: Put this errata text as a note in the description
of the HCTR (p.
6-48), the HSTR (p. 6-57), and the HCVR (p. 6-59). These page numbers
are for Revision 3 of the manual.
DSP56305 User’s Manual
: Put this errata text as a note in the description
of the HCTR (p. 6-54), the HSTR (p. 6-68), and the HCVR (p. 6-72).
These page numbers are for Revision 1of the manual.
Description: (added 6/14/2002)
2K30A
ED49
The 5V tolerant pins of the PCI bus do not meet the leakage requirement
of the 5V PCI specification when configured as inputs. When connected
with pull-up resistors to the 5V supply, the pin voltage value will not reach
the supply value, but will reach the Vih value defined by the spec. This
does not have an impact on 3V PCI compliance.
2K30A
Errata
Number
Document Update
Applies
to Mask
F
Freescale Semiconductor, Inc.
n
.
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