INTC
Exception
Combiner
Event
Combiner
Event Flags
DSP CPU
EXCEP
INT[15:4]
IDROP[15:4]
EVT[3:0]
Interrupt
Selector
IDROP
Mask
INTERR
EVT[127:4]
Preliminary
www.ti.com
C674x DSP Subsystem
Figure 1-10. DSP Megamodule INTC Block Diagram
1.3.4.6.1 NMI Interrupt
In addition to the 128 interrupts, the DSP also supports a special interrupt that behaves more like an
exception, non-maskable interrupt (NMI). The NMI interrupt is controlled by two registers in the System
Configuration Module, the chip signal register (CHIPSIG) and the chip signal clear register
(CHIPSIG_CLR).
The NMI interrupt is asserted by writing a 1 to the CHIPSIG4 bit in CHIPSIG. The NMI interrupt is cleared
by writing a 1 to the CHIPSIG4 bit in CHIPSIG_CLR.
1.3.4.7
Power-Down Controller (PDC)
The C674x megamodule includes a power-down controller (PDC). The PDC can power-down all of the
following components of the C674x megamodule and internal memories of the DSP subsystem:
•
C674x CPU
•
Program memory controller (PMC)
•
Data memory controller (DMC)
•
Unified memory controller (UMC)
•
Extended memory controller (EMC)
•
Internal Direct Memory Access controller (IDMA)
•
L1P memory
•
L1D memory
•
L2 memory
115
SPRUGX9 – 15 April 2011
Chip Level Resources
© 2011, Texas Instruments Incorporated
Содержание TMS320C6A816 Series
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