56F8023 Datasheet, PDF (1/4 Pages) Freescale Semiconductor, Inc – Digital Signal Controller

Freescale Semiconductor
MC56F8023E
Rev. 0, 09/2006
56F8023
Preliminary Chip Errata
56F8023 Digital Signal Controller
This document reports errata information on chip revision A. Errata numbers are in the form n.m, where n is the
number of the errata item and m identifies the document revision number. This document is a pre-publication draft.
Chip Revision A Errata Information:
The following errata items apply only to Revision A 56F8023 devices.
Errata
Number
1.0
2.0
3.0
Description
Impact and Work Around
In the DAC, the up/down
counter which implements
waveform generation in
automatic mode in the DAC
gasket does not handle negative
numbers.
I²C fails to detect arbitration loss
when the loss occurs while the
ACK bit of data bytes is received
in master RX mode.
Impact:
Down counting to a negative number will wrap the counter and continue down
counting.
Work Around:
Adjust MAXVAL, MINVAL, and/or STEP size so the terminal value while down
counting is positive or zero.
Impact:
No impact on bus behavior.
Arbitration loss software counters will not be accurate in this situation.
Some I²C slave TX FIFO
flushes don’t interrupt the CPU.
Work Around:
None available.
Impact:
If the number of bytes written to the TX FIFO exceeds the number of data bytes
retrieved by the remote master, there is no CPU indication that the excess data bytes
were flushed from the TX FIFO.
Software must accommodate this behavior
Work Around:
None available
4.0
I²C ACKs its own address and ^Impact:
data during general calls when ^{Since the module always ACKs the general call address and data in the scenario, the}
both master and slave are
module will never know if any of the other nodes NACKed the general call.
enabled and the module initiates
the general call. This means the ^{Use work around until fixed.}
transmission will always be
completed and it’s impossible to
determine if another device is
Work Around:
Disable slave mode prior to initiating a general call.
ACKing the call.
©Freescale Semiconductor, Inc. 2006. All rights reserved.