tmp1941af TOSHIBA Semiconductor CORPORATION, tmp1941af Datasheet - Page 143
tmp1941af
Manufacturer Part Number
tmp1941af
Description
32-bit Tx System Risc
Manufacturer
TOSHIBA Semiconductor CORPORATION
Datasheet
1.TMP1941AF.pdf
(354 pages)
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Normal Termination
Abnormal Termination
always occurs at the boundary of transfers programmed into the CCRn.TrSize field.
•
error.
•
•
Note:
A DMA channel terminates by normal completion in the following case. Normal completion
The paragraphs that follow summarize the cases in which a DMA channel terminates from an
Data transfers have terminated, with the BCRn decremented to 0.
Configuration errors
errors. A configuration error is reported before any data transfer takes place; therefore, in
case of a configuration error, the SARn, DARn and BCRn remain unaltered. When a DMA
channel has terminated from a configuration error, the AbC and Conf bits in the CSRn are
set. A configuration error occurs for the following cases:
Bus errors
bit in the CSRn is set.
− Both the CCRn.SIO and CCRn.DIO bits are set.
− The CCRn.Str bit is set when the NC or AbC bit in the CSRn is set.
− The BCRn contains a value that is not an integer multiple of the transfer size
− The SARn or DARn contains a value that is not an integer multiple of the transfer size
− The CCRn.TrSiz and CCRn.DPS fields contain illegal combinations.
− The CCRn.Str bit is set when the the BCRn contains a value of zero.
− A bus error has been reported during a source read or destination write cycle.
A configuration error results when the channel initialization contains inconsistencies or
When a DMA channel has terminated from a bus error, the AbC bit and the BES or BED
The contents of the BCRn, SARn and DARn are not guaranteed when a channel has
terminated due to a bus error. Chapter 19 lists the reserved addresses that, if accessed,
cause a bus error.
programmed into the CCRn.TrSiz field.
programmed into the CCRn.TrSiz field.
TMP1941AF-103
TMP1941AF
2003-03-27
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