N900 Hardware Schematic

An N900 schematic appears to be at [1]

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[2].

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.

Contents

Page 2

Page 3

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

Page 4

Page 5

Page 6

  • N1322 - R&D mode LED driver.
  • N1301 - LED driver - keyboard, notification - N900 Hardware LED

Page 7

  • S4311/2 - Volume keys
  • S4313 - Lock switch
  • S4301 - Power button
  • S4314 - Capture key (two level)
  • Qwerty keyboard

Page 8

  • 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 FMTX
  • N4070 - Headphone amplifier

Page 9

  • 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

Page 10

  • N6200 - GPS module
  • G6200 - GPS clock - 16.368MHz

Page 11

  • N2200 - Gazoo
  • D2800 - Rapuyama
  • D3000 - 128M NOR flash + 128M DDR - connected only to Rapuyama

Page 12

  • N1540 - Reflective optical switch
  • N1530 - Ambient light sensor
  • N1550 - CMOS camera module

Page 13

  • Aura - Vapaus, ... Cellphone components.

Page 14

Wlan nominal spectrums, various clock nominal levels, front view of PCB.

Page 15

More clock levels, nominal GSM and CDMA spectrum.