EDMA3 Registers
11.4.1.2.3 QDMA Event Missed Register (QEMR)
For a particular QDMA channel, if two QDMA events are detected without the first event getting
cleared/serviced, the bit corresponding to that channel is set/asserted in the QDMA event missed register
(QEMR). The QEMR bits for a channel are also set if a QDMA event on the channel encounters a NULL
entry (or a NULL TR is serviced). If any QEMR bit is set (and all errors, including bits in other error
registers (EMR/EMRH, CCERR) were previously cleared), the EDMA3CC generates an error interrupt. For
details on EDMA3CC error interrupt generation, see Error Interrupts.
The QEMR is shown in
and described in
Figure 11-54. QDMA Event Missed Register (QEMR)
31
16
Reserved
R-0
15
7
6
5
4
3
2
1
0
Reserved
E7
E6
E5
E4
E3
E2
E1
E0
R-0
R-0
R-0
R-0
R-0
R-0
R-0
R-0
R-0
LEGEND: R = Read only; -n = value after reset
Table 11-39. QDMA Event Missed Register (QEMR) Field Descriptions
Bit
Field
Value
Description
31-8
Reserved
0
Reserved. Always write 0 to this bit; writes of 1 to this bit are not supported and attempts to do so may
result in undefined behavior.
7-0
En
Channel 0-7 QDMA event missed. En is cleared by writing a 1 to the corresponding bit in the QDMA
event missed clear register (QEMCR).
0
No missed event.
1
Missed event occurred.
953
SPRUH73H – October 2011 – Revised April 2013
Enhanced Direct Memory Access (EDMA)
Copyright © 2011–2013, Texas Instruments Incorporated