Editing N900 Hardware Power management
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- | The power managment on the | + | The power managment on the n900 is very complex, and involves a large number of interacting systems. |
- | + | =Hardware= | |
- | ===SoC=== | + | ====SoC==== |
The System-on-a-chip is the main processor on the n900. | The System-on-a-chip is the main processor on the n900. | ||
This is the [http://focus.ti.com/docs/prod/folders/print/omap3530.html TI omap3430]. | This is the [http://focus.ti.com/docs/prod/folders/print/omap3530.html TI omap3430]. | ||
- | For more information see [[N900 CPU]]. | + | For more information see [[N900 Hardware CPU]]. |
- | ===Gaia=== | + | ====Gaia==== |
- | The TWL4030 is a TI companion chip to the SoC. For more information see [[N900 Hardware Chipset]] | + | The TWL4030 is a TI companion chip to the SoC. |
+ | For more information see [[N900 Hardware Chipset]] | ||
- | ===USB battery charger=== | + | ====USB battery charger==== |
- | The [http://focus.ti.com/docs/prod/folders/print/ | + | The [http://focus.ti.com/docs/prod/folders/print/bq24150.html bq24150] charger from TI is a flexible charger. It, along with the PHY chip - support charging without the intervention of the SoC when the system is charging from a completely dead battery. The PHY chip detects a charger (shorted D+ and D- pins) and the charger uses this information to charge more rapidly. |
- | It also features reverse boost mode - which enables power to be supplied to a USB device connected to the N900. (up to a limit of | + | It also features reverse boost mode - which enables power to be supplied to a USB device connected to the N900. (up to a limit of 200mA) |
For more information see [[N900 Hardware Battery Charger]] | For more information see [[N900 Hardware Battery Charger]] | ||
- | + | =Firmware= | |
- | + | ||
The CPU is designed to work intimately with the companion chip, in order to implement [http://focus.ti.com/general/docs/wtbu/wtbugencontent.tsp?templateId=6123&navigationId=12032&contentId=4609 SmartReflex]. | The CPU is designed to work intimately with the companion chip, in order to implement [http://focus.ti.com/general/docs/wtbu/wtbugencontent.tsp?templateId=6123&navigationId=12032&contentId=4609 SmartReflex]. | ||
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This dramatically reduces power usage. | This dramatically reduces power usage. | ||
- | + | =Software= | |
- | |||
- | [[Category: | + | [[Category:n900]] [[Category:n900_Hardware]] |
- | [[Category: | + |
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