Initiating an EDMA Transfer
6-18
Events originate from a peripheral such as the McBSP (R/XEVT), or an exter-
nal device in the form of an external interrupt (say, EXT_INT4). The source of
these events is listed in Table 6–4. The event is specific to a channel, the prior-
ity of each event can be specified independently in the transfer parameters
stored in the EDMA parameter RAM.
Table 6–4. EDMA Channel Association with Sync Events
EDMA
Channel
Number
Event Acronym
Event Description
0
DSPINT
Host port host to DSP interrupt
1
TINT0
Timer 0 interrupt
2
TINT1
Timer 1 interrupt
3
SD_INT
EMIF SDRAM timer interrupt
4
EXT_INT4
External interrupt pin 4
5
EXT_INT5
External interrupt pin 5
6
EXT_INT6
External interrupt pin 6
7
EXT_INT7
External interrupt pin 7
8
EDMA_TCC8
EDMA transfer complete code 1000b interrupt
9
EDMA_TCC9
EDMA TCC 1001b interrupt
10
EDMA_TCC10
EDMA TCC 1010b interrupt
11
EDMA_TCC11
EDMA TCC 1011b interrupt
12
XEVT0
McBSP0 transmit event
13
REVT0
McBSP0 receive event
14
XEVT1
McBSP1 transmit event
15
REVT1
McBSP1 receive event