Interrupt Sources And Interrupt Selector - Texas Instruments TMS320C6711D User Manual

interrupt sources and interrupt selector

The C67x DSP core on the device supports 16 prioritized interrupts, which are listed in Table 20. The highest
priority interrupt is INT_00 (dedicated to RESET) while the lowest priority is INT_15. The first four interrupts are
non-maskable and fixed. The remaining interrupts (4−15) are maskable and default to the interrupt source listed
in Table 20. However, their interrupt source may be reprogrammed to any one of the sources listed in Table 21
(Interrupt Selector). Table 21 lists the selector value corresponding to each of the alternate interrupt sources.
The selector choice for interrupts 4−15 is made by programming the corresponding fields (listed in Table 20)
in the MUXH (address 0x019C0000) and MUXL (address 0x019C0004) registers.
Table 20. DSP Interrupts
INTERRUPT
DSP
SELECTOR
INTERRUPT
CONTROL
NUMBER
REGISTER
INT_00 −
INT_01 −
INT_02 −
INT_03 −
INT_04 MUXL[4:0]
INT_05 MUXL[9:5]
INT_06 MUXL[14:10]
INT_07 MUXL[20:16]
INT_08 MUXL[25:21]
INT_09 MUXL[30:26]
INT_10 MUXH[4:0]
INT_11 MUXH[9:5]
INT_12 MUXH[14:10]
INT_13 MUXH[20:16]
INT_14 MUXH[25:21]
INT_15 MUXH[30:26]
† Interrupt Events GPINT4, GPINT5, GPINT6, and GPINT7 are outputs from the GPIO module (GP). They originate from the device pins
GP[4](EXT_INT4), GP[5](EXT_INT5), GP[6](EXT_INT6), and GP[7](EXT_INT7). These pins can be used as edge-sensitive EXT_INTx
with polarity controlled by the External Interrupt Polarity Register (EXTPOL.[3:0]). The corresponding pins must first be enabled in the GPIO
module by setting the corresponding enable bits in the GP Enable Register (GPEN.[7:4]), and configuring them as inputs in the GP Direction
Register (GPDIR.[7:4]). These interrupts can be controlled through the GPIO module in addition to the simple EXTPOL.[3:0] bits. For more
information on interrupt control via the GPIO module, see the TMS320C6000 DSP General-Purpose Input/Output (GPIO) Reference Guide
(literature number SPRU584).
FLOATING POINT DIGITAL SIGNAL PROCESSOR
DEFAULT
DEFAULT
SELECTOR
INTERRUPT
VALUE
EVENT
(BINARY)
− RESET
− NMI
− Reserved
− Reserved
GPINT4 †
00100
GPINT5 †
00101
GPINT6 †
00110
GPINT7 †
00111
01000 EDMAINT
01001 EMUDTDMA
00011 SDINT
01010 EMURTDXRX
01011 EMURTDXTX
00000 DSPINT
00001 TINT0
00010 TINT1
•
POST OFFICE BOX 1443 HOUSTON, TEXAS 77251−1443
TMS320C6711D
SPRS292A − OCTOBER 2005 − REVISED NOVEMBER 2005
Table 21. Interrupt Selector
INTERRUPT
INTERRUPT
SELECTOR
VALUE EVENT
(BINARY)
00000 DSPINT
00001 TINT0
00010 TINT1
00011 SDINT
GPINT4 †
00100
GPINT5 †
00101
GPINT6 †
00110
GPINT7 †
00111
01000 EDMAINT
01001 EMUDTDMA
01010 EMURTDXRX
01011 EMURTDXTX
01100 XINT0
01101 RINT0
01110 XINT1
01111 RINT1
10000 GPINT0
MODULE
HPI
Timer 0
Timer 1
EMIF
GPIO
GPIO
GPIO
GPIO
EDMA
Emulation
Emulation
Emulation
McBSP0
McBSP0
McBSP1
McBSP1
GPIO
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