Power management concept...

Ian Stirling openmoko at mauve.plus.com
Tue Apr 24 14:13:28 CEST 2007

Harald Welte wrote:
<snip - of the CPU>

> there is no idle mode. there's only slow mode, which gets rid of the
> PLL's but is significantly higher, power-consumption wise.

S3C2410A manual - chapter 7 - page 21.

IDLE mode: The block disconnects clocks (FCLK) only to the CPU core 
while it supplies clocks to all other peripherals. The idle mode results 
in decreased power consumption due to the CPU core. Any interrupt 
request can wake the CPU from idle mode.

Deeply annoyingly, it doesn't give actual numbers.
It gives typical mode power at 200MHz at 259mW, and idle as 124mW, but 
this is comparing between idle mode, and playing a movie, which isn't 
very helpful.

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