N900 Hardware Chipset
(New page: The TWL4030 (to be precise the TWL5030B, see [http://people.openmoko.org/joerg/n900/images/n900_01.jpeg] aka TPS65950) has USB PHY, power managment and audio codec. The USB PHY isn't use...) |
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| - | + | The chip known as 'Gaia' in the schematics is the companion chip to the processor. | |
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The TWL4030 (to be precise the TWL5030B, see [http://people.openmoko.org/joerg/n900/images/n900_01.jpeg] aka TPS65950) has USB PHY, power managment and audio codec. | The TWL4030 (to be precise the TWL5030B, see [http://people.openmoko.org/joerg/n900/images/n900_01.jpeg] aka TPS65950) has USB PHY, power managment and audio codec. | ||
Revision as of 10:45, 4 June 2010
The chip known as 'Gaia' in the schematics is the companion chip to the processor.
Hardware
The TWL4030 (to be precise the TWL5030B, see [1] aka TPS65950) has USB PHY, power managment and audio codec.
![[1]](http://people.openmoko.org/joerg/n900/images/n900_01.jpeg){kind=link}
The USB PHY isn't used and is handled by the nxp1707a [2] See more information on USB
It seems to be documented - not under this part number - at TIs website
A quick check indicates the I2C bus addresses match - see 13.3 in above datasheet.
If this is the correct part, the following description applies:
The TPS65950 contains;
- Power management
- Several regulators - switched mode and LDO.
- Audio codec
- Five DACs, two ADCs
- Several power amplifiers.
- Microphone amplifiers
- USB tranciever
- Highspeed OTG compatible with integrated charge pump, and carkit support, designed for direct connection to the SoC.
- an ac/USB charger
- LED drivers
- ADC
- ADC can measure both input voltages to device, or voltages connected externally.
- RTC
- GPIO
- This can support switches, keypads, ...