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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 Figure 11-72 and described in Table 11-56. The ECRH is shown in Figure 11-73
and described in Table 11-57.
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)
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