N900 Hardware Chipset: Difference between revisions
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The chip known as 'Gaia' in the schematics is the companion chip to the processor | The chip known as 'Gaia' in the [[N900 Hardware Schematic|schematics]] is the companion chip to the processor. | ||
==Hardware== | |||
The TWL5030B is the companion chip to the CPU. It can be seen in [http://people.openmoko.org/joerg/n900/images/n900_01.jpeg] and has USB PHY, power management and audio codec. It is also known as the TPS65950. | |||
A datasheet for the [http://focus.ti.com/docs/prod/folders/print/tps65950.html TIs TPS65950] is at TIs website. | |||
The USB PHY is not used and this function is handled by the nxp1707a [http://www.spinics.net/lists/linux-usb/msg25167.html] See [[N900_Hardware_USB|more information on USB]] | |||
The TPS65950 contains | The TPS65950 contains: | ||
* Power management | * Power management | ||
** Several regulators - switched mode and LDO. | ** Several regulators - switched mode and LDO. | ||
| Line 27: | Line 26: | ||
** This can support switches, keypads, ... | ** This can support switches, keypads, ... | ||
==Connections== | ===Connections=== | ||
It is connected to the [[N900 Hardware Bus I2C|I2C]] bus. | It is connected to the [[N900 Hardware Bus I2C|I2C]] bus. | ||
[[Category:N900 Hardware]] | [[Category:N900 Hardware]] | ||
Latest revision as of 09:34, 10 June 2010
The chip known as 'Gaia' in the schematics is the companion chip to the processor.
Hardware
The TWL5030B is the companion chip to the CPU. It can be seen in [1] and has USB PHY, power management and audio codec. It is also known as the TPS65950.
A datasheet for the TIs TPS65950 is at TIs website.
The USB PHY is not used and this function is handled by the nxp1707a [2] See more information on USB
The TPS65950 contains:
- Power management
- Several regulators - switched mode and LDO.
- Audio codec
- Five DACs, two ADCs
- Several power amplifiers.
- Microphone amplifiers
- USB transceiver
- Highspeed OTG compatible with integrated charge pump, and carkit support, designed for direct connection to the CPU. (not used in N900)
- 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, ...
Connections
It is connected to the I2C bus.
![[1]](http://people.openmoko.org/joerg/n900/images/n900_01.jpeg){kind=link}