Editing N900 Hardware Schematic
Warning: You are not logged in.
Your IP address will be recorded in this page's edit history.
The edit can be undone.
Please check the comparison below to verify that this is what you want to do, and then save the changes below to finish undoing the edit.
Latest revision | Your text | ||
Line 1: | Line 1: | ||
- | An [[Nokia N900|N900]] schematic appears to be at | + | An [[Nokia N900|N900]] schematic appears to be at <ref name="Schematics download - mirror 1">http://mohammadag.xceleo.org/public/.private/Nokia_N900_RX-51_Schematics.pdf</ref> and <ref name="Schematics download - mirror 2 - low bandwidth/speeds">http://mohammadag.ucoz.com/Nokia_N900_RX-51_Schematics.pdf</ref>. |
- | + | ||
This might not be the exact version of the schematic used to make the phone. | 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<ref name="high resolution scans">http:// | + | 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<ref name="high resolution scans">http://people.openmoko.org/joerg/n900</ref>. |
This is a brief list of what's where on the schematic. | This is a brief list of what's where on the schematic. | ||
Line 23: | Line 22: | ||
==Page 3 Memory== | ==Page 3 Memory== | ||
- | * N5210 - uSD hotswap detector | + | * N5210 - uSD hotswap detector |
* D4800 - OMAP3430 - [[N900 CPU]] | * D4800 - OMAP3430 - [[N900 CPU]] | ||
- | * D5000 - Combo memory - 64M*32 DDR, 128M*16 Flash. (POP | + | * D5000 - Combo memory - 64M*32 DDR, 128M*16 Flash. (POP?) |
* D5200 - eMMC 32 GB | * D5200 - eMMC 32 GB | ||
Line 38: | Line 37: | ||
* N1130 - Fuel Gauge - [[N900 Hardware Charge Meter]] | * N1130 - Fuel Gauge - [[N900 Hardware Charge Meter]] | ||
* N1140 - Battery Charger - [[N900 Hardware Battery Charger]] | * N1140 - Battery Charger - [[N900 Hardware Battery Charger]] | ||
- | * R1129+R1130 - Sense resistor for Fuel Gauge. (actual values in milli Ohms *urgently* needed! | + | * R1129+R1130 - Sense resistor for Fuel Gauge. (actual values in milli Ohms *urgently* needed!) |
* R1110 - 10 K thermistor in parallel with 1n to ground, to ADCIN0 on GAIA - labeled "Battery temperature sensor" | * R1110 - 10 K thermistor in parallel with 1n to ground, to ADCIN0 on GAIA - labeled "Battery temperature sensor" | ||
Line 44: | Line 43: | ||
* N1510 - Touchscreen controller [[N900 Hardware Subsystems#Touchscreen]] | * N1510 - Touchscreen controller [[N900 Hardware Subsystems#Touchscreen]] | ||
- | |||
- | |||
- | |||
- | |||
==Page 6 LEDs== | ==Page 6 LEDs== | ||
Line 73: | Line 68: | ||
* N6543 - 2.8 V regulator with enable, provides power to: | * N6543 - 2.8 V regulator with enable, provides power to: | ||
- | * G6450 - 38.4 MHz VCTCXO - clock for Bluetooth and WLAN modules automatically enabled when either require clock, through | + | * G6450 - 38.4 MHz VCTCXO - clock for Bluetooth and WLAN modules automatically enabled when either require clock, through or gate to above regulator. |
* N6300 - WLAN module | * N6300 - WLAN module | ||
* N6000 - BT module / FM receiver - [[N900 FM radio receiver]] | * N6000 - BT module / FM receiver - [[N900 FM radio receiver]] | ||
- | |||
- | |||
- | |||
- | |||
==Page 10 GPS== | ==Page 10 GPS== | ||
Line 88: | Line 79: | ||
==Page 11 RAPUYAMA, GAZOO== | ==Page 11 RAPUYAMA, GAZOO== | ||
- | * N2200 - Gazoo | + | * N2200 - Gazoo |
- | * D2800 - Rapuyama | + | * D2800 - Rapuyama |
- | * D3000 - 128 | + | * D3000 - 128 M NOR flash + 128 M DDR - connected only to Rapuyama |
==Page 12 Display flex connector== | ==Page 12 Display flex connector== | ||
- | * N1540 - Reflective optical switch | + | * N1540 - Reflective optical switch |
* N1530 - Ambient light sensor | * N1530 - Ambient light sensor | ||
* N1550 - CMOS camera module | * N1550 - CMOS camera module | ||
- | |||
- | |||
- | |||
- | |||
- | |||
- | |||
==Page 13 RF Part== | ==Page 13 RF Part== | ||
- | + | ||
- | * | + | * Aura - Vapaus, ... Cellphone components. |
- | + | ||
- | + | ||
==Page 14 Signal Overview (Top)== | ==Page 14 Signal Overview (Top)== | ||
Line 136: | Line 119: | ||
==Note on component types and values== | ==Note on component types and values== | ||
- | The schematics only use symbolic labels for most components, and abstract names made up by Nokia for some of the large chips (e.g. GAYA, RAPUYAMA). However at least most resistors and capacitors have their size printed next to them. So the simpler the component, the harder it gets to tell what it actually is - except for capacitors and resistors. For a lot of chips you can read the actual printing from body of component, by looking at the photos p. 14, 15 and | + | The schematics only use symbolic labels for most components, and abstract names made up by Nokia for some of the large chips (e.g. GAYA, RAPUYAMA). However at least most resistors and capacitors have their size printed next to them. So the simpler the component, the harder it gets to tell what it actually is - except for capacitors and resistors. For a lot of chips you can read the actual printing from body of component, by looking at the photos p. 14, 15 and on the highres scans<ref name="high resolution scans"/>. |
This webpage<ref name="teardown BOM">http://www2.electronicproducts.com/Nokia_N900_Mobile_Phone-whatsinside_text-90.aspx</ref> has a pretty decent list of components from a reverse engineering teardown effort by isuppli.com. Almost a BOM, if only they had added the symbolic labels or exact component locations to link back to the schematics. Comes even with links to datasheets, physical dimensions of component, etc pp. | This webpage<ref name="teardown BOM">http://www2.electronicproducts.com/Nokia_N900_Mobile_Phone-whatsinside_text-90.aspx</ref> has a pretty decent list of components from a reverse engineering teardown effort by isuppli.com. Almost a BOM, if only they had added the symbolic labels or exact component locations to link back to the schematics. Comes even with links to datasheets, physical dimensions of component, etc pp. |
Learn more about Contributing to the wiki.