- Texas Instruments Floating Point Digital Signal Processor Specification Sheet

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SPRS292A − OCTOBER 2005 − REVISED NOVEMBER 2005
44
POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443
EDMA module and EDMA selector
The C67x EDMA for the device also supports up to 16 EDMA channels. Four of the sixteen channels (channels
8−11) are reserved for EDMA chaining, leaving 12 EDMA channels available to service peripheral devices. On
the device, the user, through the EDMA selector registers, can control the EDMA channels servicing peripheral
devices.
The EDMA selector registers are located at addresses 0x01A0FF00 (ESEL0), 0x01A0FF04 (ESEL1), and
0x01A0FF0C (ESEL3). These EDMA selector registers control the mapping of the EDMA events to the EDMA
channels. Each EDMA event has an assigned EDMA selector code (see Table 23). By loading each EVTSELx
register field with an EDMA selector code, users can map any desired EDMA event to any specified EDMA
channel. Table 22 lists the default EDMA selector value for each EDMA channel.
See Table 24 and Table 25 for the EDMA Event Selector registers and their associated bit descriptions.
Table 22. EDMA Channels Table 23. EDMA Selector
EDMA
CHANNEL
EDMA
SELECTOR
CONTROL
REGISTER
DEFAULT
SELECTOR
VALUE
(BINARY)
DEFAULT
EDMA
EVENT
EDMA
SELECTOR
CODE (BINARY)
EDMA
EVENT
MODULE
0 ESEL0[5:0] 000000 DSPINT 000000 DSPINT HPI
1 ESEL0[13:8] 000001 TINT0 000001 TINT0 TIMER0
2 ESEL0[21:16] 000010 TINT1 000010 TINT1 TIMER1
3 ESEL0[29:24] 000011 SDINT 000011 SDINT EMIF
4 ESEL1[5:0] 000100 GPINT4
†
000100 GPINT4
†
GPIO
5 ESEL1[13:8] 000101 GPINT5
†
000101 GPINT5
†
GPIO
6 ESEL1[21:16] 000110 GPINT6
†
000110 GPINT6
†
GPIO
7 ESEL1[29:24] 000111 GPINT7
†
000111 GPINT7
†
GPIO
8 − − TCC8 (Chaining) 001000 Reserved
9 − − TCC9 (Chaining) 001001 Reserved
10 − − TCC10 (Chaining) 001010 GPINT2 GPIO
11 − − TCC11 (Chaining) 001011 Reserved
12 ESEL3[5:0] 001100 XEVT0 001100 XEVT0 McBSP0
13 ESEL3[13:8] 001101 REVT0 001101 REVT0 McBSP0
14 ESEL3[21:16] 001110 XEVT1 001110 XEVT1 McBSP1
15 ESEL3[29:24] 001111 REVT1 001111 REVT1 McBSP1
010000−111111 Reserved
†
The GPINT[4−7] interrupt events are sourced from the GPIO module via the external interrupt capable GP[4−7] pins.