DSP56311CE1K34A Datasheet, PDF (13/14 Pages) Motorola, Inc – DSP56311 Device Errata for Mask

ED43
ED44
ED47
ED50
NOTES
Description (added on 7/6/2000)
Two HI08 registers, the Host Command Vector Register (HCVR) and the Host
Interrupt Vector Register (HIVR), do not have a known value at reset. That is, their
initial value after reset is unknown.
Workaround: To use these registers, the user must write a value to these registers.
Description (added 3/31/2001):
When used with MS=1, a very small fraction of devices may seem to have bad
memory bits, although the problem is actually with the busses used in the switch
mode and/or the logic that enables them. This impacts all mask revisions of the
DSP56311. When used with MS=0, this problem is not present.
Diagnostic: With the mode set for maximum program memory, write and read both
1’s and 0’s to each bit of extended program memory. Repeat the process via both
core and DMA accesses. If possible, the screen should be performed at the highest
temperature and lowest voltage the parts will see in the application. If high
temperature testing is difficult, the following procedure can be followed:
1. run the test at room temperature, 10 MHz, and 1.9V
2. run the test at room temperature, (Fmax + 6) MHz, and 1.7V
3. confirm any failures at spec temperature, speed and voltage
Workaround: The production test program has been modified to address the issue.
This test has been run on all material with date codes of WW10, 2001 and later, and
for all material with a drypack seal date of March 8, 2001 or later.
Description: (added 1/19/2002):
Reclassified from ES135 to ED47 (spec change) on 5/9/2002:
When DMA line-by-line block transfers are used with the EFCOP to perform IIR
filtering with two or fewer IIR coefficients, the first output of the IIR filter is lost.
The rest of the outputs are shifted and inaccurate.
Workaround: Instead of DMA line-by-line block transfers, use DMA word-by-word
block transfers.
Description (added 9/10/1996 as ES29; reclassified as a documentation erratum on
8/2/2002):
When the SCI transmitter is used in Synchronous mode, the last bit of the
transmitted byte might be truncated to the half of the serial cycle.
Workaround: Not available.
1K34A
1K34A
1K34A
1K34A
NOTES
1. An over-bar (i.e., xxxx) indicates an active-low signal.
2. The letters in the right column tell which DSP56311 mask numbers apply.
DSP56311 Device Errata for Mask 1K34A, Rev. 5
Freescale Semiconductor
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