DSP56300 Motorola Inc, DSP56300 Datasheet - Page 20

• Manufacturer Part Number: DSP56300
• Description: DSP56301 Digital Signal Processor
• Manufacturer: Motorola Inc

Errata
Number
ED46
ED49
DSP56301 Errata
 1996-2002, Motorola
Document Update
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)
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.
Freescale Semiconductor, Inc.
DSP56301 Digital Signal Processor
For More Information On This Product,
301CE2K30A_0_8
Go to: www.freescale.com
Mask:2K30A
Chip Errata
ng 12/19/02 pg. 20
Applies
to Mask
2K30A
2K30A