tmpr4937 TOSHIBA Semiconductor CORPORATION, tmpr4937 Datasheet - Page 188
tmpr4937
Manufacturer Part Number
tmpr4937
Description
64-bit Tx System Risc
Manufacturer
TOSHIBA Semiconductor CORPORATION
Datasheet
1.TMPR4937.pdf
(552 pages)
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Bit
8
7
6
5
4
3
2
1
0
Mnemonic
DESERR
SORERR
NTRNFC
ABCHC
NCHNC
CHERR
CFERR
XFACT
EXTDN
Transfer Active
Error Complete
Chain Complete
Transfer
Complete
External DONE
Asserted
Configuration
Error
Chain Bus Error
Destination Error
Source Bus Error
Field Name
Figure 8.4.3 DMA Channel Status Register (2/2)
Transfer Active (Default: 0)
This value is a copy of the Transfer Active bit (XFACT) of the DMA
Channel Control Register (DMCCRn).
Error Completion (Default: 0)
This bit indicates whether an error occurred during DMA transfer. This bit
indicates the logical sum of the four error bits (CFERR, CHERR, DESERR,
SORERR) in DMCSRn[3:0].
1: DMA transfer ends due to an error.
0: No error occurred since this bit was last cleared.
Normal Chain Completion (Default: 0)
When performing chain DMA transfer, This bit indicates whether all DMA
data transfers in the DMA Descriptor chain are complete.
1: All DMA data transfers in the DMA Descriptor chain ended normally. Or,
0: DMA transfer has not ended normally since this bit was last cleared.
Normal Transfer Completion (Default: 0)
This bit indicates whether DMA transfer ended according to the current
DMA Channel Register setting.
1: DMA transfer ended normally.
0: DMA transfer has not ended since this bit was last cleared.
External Done Asserted (Default: 0)
This bit indicates whether an external I/O device asserted the DMADONE*
signal. When the DMADONE* signal is set to bidirectional, this bit is also
set when the TX4937 asserts the DMADONE* signal.
1: DMADONE* signal was asserted.
0: DMADONE* signal was not asserted.
Configuration Error (Default: 0)
Indicates whether an illegal register setting was made.
1: There was a configuration error.
0: There was no configuration error.
Chain Bus Error (Default: 0)
This bit indicates whether a bus error occurred while reading a DMA
Command Descriptor.
1: Bus error occurred.
0: No bus error occurred.
Destination Bus Error (Default: 0)
This bit indicates whether a bus error occurred during a destination bus
Write operation (a Write to a set DMDARn address).
1: Bus error occurred.
0: No bus error occurred.
Source Bus Error (Default: 0)
This bit indicates whether a bus error occurred during either a source bus
Read or Write operation (A Read or Write to a set DMSARn address).
1: Bus error occurred.
0: No bus error occurred.
DMA transfer that did not use a DMA Descriptor chain ended normally.
8-32
Description
Chapter 8 DMA Controller
Read/Write
R
R
R/W1C
R/W1C
R/W1C
R/W1C
R/W1C
R/W1C
R/W1C
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