Car Stereo System - Car Radio Digital Signal Processor User Manual

www.ti.com
5.4 Power-Down Control
5.5 Megamodule Resets
SM320C6455-EP
FIXED-POINT DIGITAL SIGNAL PROCESSOR
SPRS462B – SEPTEMBER 2007 – REVISED JANUARY 2008
The C64x+ Megamodule supports the ability to power-down various parts of the C64x+ Megamodule. The
power-down controller (PDC) of the C64x+ Megamodule can be used to power down L1P, the cache
control hardware, the CPU, and the entire C64x+ Megamodule. These power-down features can be used
to design systems for lower overall system power requirements.
NOTE
The C6455 does not support power-down modes for the L2 memory at this time.
More information on the power-down features of the C64x+ Megamodule can be found in the
TMS320C64x+ Megamodule Reference Guide (literature number SPRU871 ).
Table 5-2 shows the reset types supported on the C6455 device and they affect the resetting of the
Megamodule, either both globally or just locally.
Table 5-2. Megamodule Reset (Global or Local)
GLOBAL LOCAL
RESET TYPE MEGAMODULE MEGAMODULE
RESET RESET
Power-On Reset Y Y
Warm Reset Y Y
Max Reset Y Y
System Reset Y Y
CPU Reset N Y
For more detailed information on the global and local Megamodule resets, see the TMS320C64x+
Megamodule Reference Guide (literature number SPRU871 ). And for more detailed information on device
resets, see Section 7.6 , Reset Controller.
Submit Documentation Feedback C64x+ Megamodule 91