TMS320DM335 datasheet(87/156 Pages) TI

87 / 156 page

Boot

mode

Reset

Boot

mode

Bootfrom

NANDflash

InternalROM

BootOK?

Yes

Bootfrom

UART

Bootfrom

MMC/SD

BootOK?

Yes

Invokeloaded

Program

Invoke

OneNAND

Yes

3.13 Power Management

TMS320DM335

Digital Media System-on-Chip (DMSoC)

www.ti.com

SPRS528 – JULY 2008

Figure 3-6. Boot Mode Functional Block Diagram

The DM335 is designed for minimal power consumption. There are two components to power

consumption: active power and leakage power. Active power is the power consumed to perform work and

scales with clock frequency and the amount of computations being performed. Active power can be

reduced by controlling the clocks in such a way as to either operate at a clock setting just high enough to

complete the required operation in the required timeline or to run at a clock setting until the work is

complete and then drastically cut the clocks (e.g. to PLL Bypass mode) until additional work must be

performed. Leakage power is due to static current leakage and occurs regardless of the clock rate.

Leakage, or standby power, is unavoidable while power is applied and scales roughly with the operating

junction temperatures. Leakage power can only be avoided by removing power completely from a device

or subsystem. The DM335 includes several power management features which are briefly described in

Table 3-17. Refer to the TMS320DM335 Digital Media System-on-Chip (DMSoC) ARM Subsystem

Reference Guide (literature number SPRUFX7) for more information on power management.

Table 3-21. Power Management Features

Power Management Features

Description

Clock Management

Module clock disable

Module clocks can be disabled to reduce switching power

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TMS320DM335 Datasheet(PDF) 87 Page - Texas Instruments

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