N900 Hardware Schematic

An N900 schematic appears to be at

This might not be the exact version of the schematic used to make the phone.

Revision is given as 2JH_21A on the schematic. However, the pictured PCB in the schematic is 2JH_20 - see above the third row from the right keys. A dissasembled purchased n900 showed a revision number of 2JH_21.

This is a brief list of what's where on the schematic. It generally only includes major components, and any minor components that have a direct bearing on software.

=Page 2=
 * D4800 - OMAP3430 - N900 Hardware CPU
 * N5820 - Camera cover switch
 * N5801/2 - Main/secondary camera switches (Digital, switch CSI_A_B(3:0) bus)
 * N7001 - LIS302DL - N900 Hardware Accelerometer
 * N5810 - - N900 Hardware Flash

=Page 3= =Page 4=
 * N5210 - uSD hotswap detector
 * D4800 - OMAP3430 - N900 Hardware CPU
 * D5000 - Combo memory - 64M*32 DDR, 128M*16 Flash. (POP?)
 * D5200 - eMMC 32Gb.

=Page 5= =Page 6= =Page 7= =Page 8= =Page 9= =Page 10=
 * Gaia - TWL4030 - N900 Hardware Chipset
 * N4290 - 2.5V regulator with enable.
 * G4246 - 19.2MHz TXCO
 * N4242 - 2.8V regulator with enable.
 * M4270 - Vibrator motor
 * D4280 - USB PHY - N900 Hardware USB
 * N1130 - Fuel Guage - N900 Hardware Charge Meter
 * N1140 - Battery Charger - N900 Hardware Battery Charger
 * R1129+R1130 - Sense resistor for Fuel Guage.
 * R1110 - 10K thermistor in parallel with 1n to ground, to ADCIN0 on GAIA - Battery temp?
 * N1510 - Touchscreen controller N900 Hardware Touchscreen
 * N1322 - R&D mode LED driver.
 * N1301 - LED driver - keyboard, notification - N900 Hardware LED
 * S4311/2 - Volume keys
 * S4313 - Lock switch
 * S4301 - Power button
 * S4314 - Capture key (two level)
 * Qwerty keyboard
 * N4022 - Analog switch, used to switch between TV out and headphones.
 * N4051 - Speaker amplifier
 * N4040 - Stereo audio codec N900 Hardware Audio Codec
 * N6180 - FM transmitter N900 Hardware FM Transmitter
 * N4070 - Headphone amplifier
 * N6543 - 2.8V regulator with enable, provides power to:
 * G6450 - 38.4MHz VCTCXO - clock for BT and WLAN modules automatically enabled when either require clock, through or gate to above regulator.
 * N6300 - WLAN module
 * N6000 - BT module / FM receiver - N900 Hardware FM Receiver


 * N6200 - GPS module