NXP Semiconductors MPC5566 - Edma Enable Request Registers (EDMA_ERQRH, EDMA_ERQRL)

Enhanced Direct Memory Access (eDMA)
MPC5566 Microcontroller Reference Manual, Rev. 2
9-12 Freescale Semiconductor
9.2.2.3 eDMA Enable Request Registers (EDMA_ERQRH, EDMA_ERQRL)
The EDMA_ERQRH and EDMA_ERQRL provide a bit map for the 64 implemented channels to enable
the request signal for each channel. EDMA_ERQRH supports channels 63–32, while EDMA_ERQRL
covers channels 31–0.
The state of any given channel enable is directly affected by writes to these registers; the state is also
affected by writes to the EDMA_SERQR and EDMA_CERQR. The EDMA_CERQR and
18–23
ERRCHN[0:5]
Error channel number. Channel number of the last recorded error (excluding GPE and CPE errors).
Note: Do not rely on the number in the ERRCHN field for group and channel priority errors. Group and
channel priority errors need to be resolved by inspection. The application code must interrogate the
priority registers to find groups or channels with duplicate priority level.
24
SAE
Source address error.
0 No source address configuration error.
1 The last recorded error was a configuration error detected in the TCD.SADDR field, indicating
TCD.SADDR is inconsistent with TCD.SSIZE.
25
SOE
Source offset error.
0 No source offset configuration error.
1 The last recorded error was a configuration error detected in the TCD.SOFF field, indicating
TCD.SOFF is inconsistent with TCD.SSIZE.
26
DAE
Destination address error.
0 No destination address configuration error.
1 The last recorded error was a configuration error detected in the TCD.DADDR field, indicating
TCD.DADDR is inconsistent with TCD.DSIZE.
27
DOE
Destination offset error.
0 No destination offset configuration error.
1 The last recorded error was a configuration error detected in the TCD.DOFF field, indicating
TCD.DOFF is inconsistent with TCD.DSIZE.
28
NCE
NBYTES/CITER configuration error.
0 No NBYTES/CITER configuration error.
1 The last recorded error was a configuration error detected in the TCD.NBYTES or TCD.CITER fields,
indicating the following conditions exist:
• TCD.NBYTES is not a multiple of TCD.SSIZE and TCD.DSIZE, or
• TCD.CITER is equal to zero, or
• TCD.CITER.E_LINK is not equal to TCD.BITER.E_LINK.
29
SGE
Scatter/gather configuration error.
0 No scatter/gather configuration error.
1 The last recorded error was a configuration error detected in the TCD.DLAST_SGA field, indicating
TCD.DLAST_SGA is not on a 32-byte boundary. This field is checked at the beginning of a
scatter/gather operation after major loop completion if TCD.E_SG is enabled.
30
SBE
Source bus error.
0 No source bus error.
1 The last recorded error was a bus error on a source read.
31
DBE
Destination bus error.
0 No destination bus error.
1 The last recorded error was a bus error on a destination write.
Table 9-3. EDMA_ESR Field Descriptions (continued)
Field Description