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N900 Hardware Subsystems

Revision as of 14:23, 16 June 2010 (view source) amigadave (Talk | contribs) m (→CPU: fix link) ← Older edit		Revision as of 14:34, 16 June 2010 (view source) amigadave (Talk | contribs) m (→Headphones: fix link) Newer edit →
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	===Headphones===		===Headphones===
-	The [[N900 Headphone Amplifier|headphone amplifier]] is a TPA6130a2 manufactured by Texas Instruments.	+	The [[N900 headphone amplifier|headphone amplifier]] is a TPA6130a2 manufactured by Texas Instruments.
	===Composite out===		===Composite out===

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Revision as of 14:34, 16 June 2010

There are many interacting hardware subsystems in the N900.

These can be split roughly into several areas.

Contents 1 Audio 1.1 Software 1.2 Main Speakers 1.3 Earpiece 1.4 Headphones 1.5 Composite out 1.6 FM radio transmitter 1.7 FM radio receiver 1.8 Bluetooth audio 2 Video 2.1 Display 2.1.1 Built in LCD 2.1.2 Composite out 2.2 Front camera (VGA) 2.3 Rear camera (5MP) 2.3.1 Rear camera autofocus 2.3.2 Rear camera LED flash 2.3.3 Rear camera warning light 2.3.4 Rear camera shutter 3 USB 3.1 USB socket 4 User interaction 4.1 Touchscreen 4.2 Accelerometer 4.3 Switches 4.3.1 Lock Switch 4.3.2 Headset Switch 4.3.3 Jack Switch 4.3.4 Camera Button 4.3.5 Power Button 4.3.6 Volume control 4.3.7 Rear cover presence switch 4.3.8 Camera cover 4.4 Keyboard 4.4.1 Keyboard Slide 4.5 Proximity sensor 4.6 Ambient Light Meter 5 Power management 5.1 Battery 5.1.1 Charge meter 5.2 Battery Charger 5.3 Gaia 5.4 CPU 6 Phone 6.1 GPS 6.2 2G/3G phone module 6.3 SIM 7 Local Network 7.1 Bluetooth 7.2 Wifi 7.3 USB Networking 8 Computing 8.1 CPU 8.1.1 Many functional blocks of the CPU 8.1.2 Chipset 8.2 Memory 8.2.1 Flash Memory 8.2.1.1 Internal 32GB eMMC 8.2.1.2 Internal 'OneNand' 256MB 8.2.1.3 External microSD card 8.2.2 RAM 9 Other hardware (needs merging into hierarchy above)

Audio

Software

Most of the audio on the N900 is handled by gstreamer and PulseAudio. See the API documentation on sound

Main Speakers

Earpiece

Headphones

The headphone amplifier is a TPA6130a2 manufactured by Texas Instruments.

Composite out

FM radio transmitter

FM radio receiver

Bluetooth audio

Video

The GPU is a SGX530 manufactured by Imagination Technologies.

Display

Built in LCD

Composite out

Front camera (VGA)

Rear camera (5MP)

Rear camera autofocus

Rear camera LED flash

Rear camera warning light

Rear camera shutter

USB

USB socket

User interaction

Touchscreen

The touch screen controller is a TSC 2005.

Accelerometer

Switches

Lock Switch

Headset Switch

Jack Switch

Camera Button

Power Button

Volume control

Rear cover presence switch

Camera cover

Keyboard

Keyboard Slide

Proximity sensor

Ambient Light Meter

Power management

Battery

Charge meter

Battery Charger

Gaia

CPU

Phone

GPS

2G/3G phone module

SIM

Local Network

Bluetooth

Wifi

USB Networking

Computing

CPU

Many functional blocks of the CPU

Chipset

Memory

Flash Memory

Internal 32GB eMMC

Internal 'OneNand' 256MB

External microSD card

RAM

Other hardware (needs merging into hierarchy above)

(Click on device for wiki page with more information)

Device	Model (Manufacturer)	Description	Driver
LED Controller	LP5523
Digital Audio Data Serial Interface	TLV320AIC3x

For those wanting to hack on the hardware drivers, the Maemo Kernel source code can be downloaded here:

http://repository.maemo.org/pool/fremantle/free/k/kernel/