User`s manual

Chip Errata
DSP56305 Digital Signal Processor
Mask: 0F13S
DSP56305 Errata  1996 - 2002 Motorola pg. 3 /ng/12/20/02
ES32
Description (added 2/12/1997):
Under the PCI specification, a PCI arbiter can park the PCI bus on a
specific device by asserting the GNT signal for that device, allowing the
device to have virtually instantaneous bus access (i.e, if GNT
is asserted
for the device, no REQ
assertion is required to start a transaction). The
device on which the bus is parked can either be a single preferred device
or the last device to use the bus (the recommended choice). The PCI
specification requires that when the bus is parked on a device and
another device requires the bus and the arbiter deasserts the GNT signal
to remove bus parking, the device on which the bus is parked must
immediately release the bus and not perform any transactions. However,
in the DSP56305, if the PCI arbiter performs bus parking on the HI32, and
the HI32 is configured as the PCI bus master, and the HI32 asserts the
HREQ signal at the same time that the PCI arbiter deasserts the HGNT
signal (removing the bus parking), the HI32 may hold the bus mastership
for one transaction.
Workaround: Do not allow the PCI bus arbiter to park the bus on the
HI32.
0F13S
ES33
Description (added 3/3/1997):
When using the JTAG instructions SAMPLE/PRELOAD, EXTEST, and
CLAMP, erroneous data may be driven out on the parallel pins and TDO.
Data cannot be shifted through the Boundary Scan Register (BSR) using
the SAMPLE/PRELOAD instruction. Because the BSR must be
preloaded using the SAMPLE/PRELOAD instruction, the EXTEST and
CLAMP instructions cannot be used for testing the board connections.
Workaround: None available.
0F13S
ES34
Description (added 3/3/1997):
The Self-Configuration procedure of the HI32 does not work properly
when executed from external memory (either program or data fetches).
Workaround: Download program and data to the internal memory and
then execute the Self-Configuration procedure from internal memory
(both program and data fetches).
0F13S
Errata
Number
Errata Description
Applies
to Mask