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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
TMS 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
TMS
Megamodule Reference Guide
(literature number
SPRU871
). And for more detailed information on device
resets, see
Section 7.6
,
Reset Controller
.
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C64x+ Megamodule
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