EDMA3 Registers
11.4.1.6.2 Event Clear Registers (ECR, ECRH)
Once an event has been posted in the event registers (ER/ERH), the event is cleared in two ways. If the
event is enabled in the event enable register (EER/EERH) and the EDMA3CC submits a transfer request
for the event to the EDMA3TC, it clears the corresponding event bit in the event register. If the event is
disabled in the event enable register (EER/EERH), the CPU can clear the event by way of the event clear
registers (ECR/ECRH).
Writing a 1 to any of the bits clears the corresponding event; writing a 0 has no effect. Once an event bit is
set in the event register, it remains set until EDMA3CC submits a transfer request for that event or the
CPU clears the event by setting the corresponding bit in ECR/ECRH.
The ECR is shown in
and described in
. The ECRH is shown in
and described in
Figure 11-72. Event Clear Register (ECR)
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
E31
E30
E29
E28
E27
E26
E25
E24
E23
E22
E21
E20
E19
E18
E17
E16
W-0
W-0
W-0
W-0
W-0
W-0
W-0
W-0
W-0
W-0
W-0
W-0
W-0
W-0
W-0
W-0
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
E15
E14
E13
E12
E11
E10
E9
E8
E7
E6
E5
E4
E3
E2
E1
E0
W-0
W-0
W-0
W-0
W-0
W-0
W-0
W-0
W-0
W-0
W-0
W-0
W-0
W-0
W-0
W-0
LEGEND: W = Write only; -n = value after reset
Table 11-56. Event Clear Register (ECR) Field Descriptions
Bit
Field
Value
Description
31-0
En
Event clear for event 0-31. Any of the event bits in ECR is set to clear the event (En) in the event register
(ER). A write of 0 has no effect.
0
No effect.
1
EDMA3CC event is cleared in the event register (ER).
Figure 11-73. Event Clear Register High (ECRH)
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
E63
E62
E61
E60
E59
E58
E57
E56
E55
E54
E53
E52
E51
E50
E49
E48
W-0
W-0
W-0
W-0
W-0
W-0
W-0
W-0
W-0
W-0
W-0
W-0
W-0
W-0
W-0
W-0
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
E47
E46
E45
E44
E43
E42
E41
E40
E39
E38
E37
E36
E35
E34
E33
E32
W-0
W-0
W-0
W-0
W-0
W-0
W-0
W-0
W-0
W-0
W-0
W-0
W-0
W-0
W-0
W-0
LEGEND: W = Write only; -n = value after reset
Table 11-57. Event Clear Register High (ECRH) Field Descriptions
Bit
Field
Value
Description
31-0
En
Event clear for event 32-63. Any of the event bits in ECRH are set to clear the event (En) in the event
register high (ERH). A write of 0 has no effect.
0
No effect.
1
EDMA3CC event is cleared in the event register high (ERH).
971
SPRUH73H – October 2011 – Revised April 2013
Enhanced Direct Memory Access (EDMA)
Copyright © 2011–2013, Texas Instruments Incorporated