View Full Version : Nokia N800 Internet Tablet Chips Revealed
I opened my N800 last weekend to look for the FM radio that I thought might be hidden away. (http://www.internettablettalk.com/forums/showthread.php?t=3952) I guess I could have waited a few more days and saved my warranty, but the inside of an N800 is interesting.
Thank you Thoughtfix for the disassembly instructions.
The shields are not soldered down, but it's almost impossible to remove them without bending any of the little tabs. They can be bent back, but it's easy to tell that they were removed.
300 dpi, 300kB http://www.ee.nmt.edu/~james.smith/n800_no_shields_300_dpi.jpg
1200 dpi, 1.4MB http://www.ee.nmt.edu/~james.smith/n800_no_shields_1200_dpi.jpg
Please don't do this!! It will void your warranty, and you could easily ruin your tablet.
My Incomplete list of part lookups:
Part Label ----- Description
PJMI ----- tps65030 USB-OTG Power Manager 5v 100mA
TUSB6010 ------- USB-OTG Controller
TSC23031 ------- Related to TSC2301? Touch Screen Controller
ST2378E ------ Level Translator
TEA5761UK ------ FM Stereo receiver
STLC4550 ----- Wireless Lan
csr 41814 ------- Bluetooth
I guess the FM radio is no longer news, but the USB power manager looks interesting. This should mean that (when Nokia is ready) the N800 will offer a powered USB host.
I guess the FM radio is no longer news, but the USB power manager looks interesting. This should mean that (when Nokia is ready) the N800 will offer a powered USB host.
Or maybe USB powered accessories? :)
Great job!
thoughtfix
2007-02-08, 00:35
Oh sweetness... you all are making me look like a slacker!
With the help of ThoughtFix's disassebly instructions, itT member sdrman risks voiding his Nokia N800's warranty and decides to remove all the metal shielding covering the device's chips.Â* Along with confirmation of a FM stereo chip inside, a USB power manager chip is also revealed. Does this mean we can expect USB powered accessories for the Nokia N800 in the future? Two surprises in one day! This is getting interesting... View sdrman's full post and hi-res images of the N800's main board [ 300dpi (mirror), 1200dpi (mirror) ].Read the full article. (http://www.internettablettalk.com/2007/02/07/nokia-n800-internet-tablet-chips-revealed/)
The shields are not soldered down, but it's almost impossible to remove them without bending any of the little tabs. They can be bent back, but it's easy to tell that they were removed.
If you mean the faceplate, follow my removal instructions (http://www.internettablettalk.com/forums/showthread.php?t=4320&) (scroll down).
If you mean the faceplate, follow my removal instructions (http://www.internettablettalk.com/forums/showthread.php?t=4320&) (scroll down).
i think he's talking about the tabs in the metallic shielding, on the pcb.
Wow! This is a front page story? I'm flattered :)
i think he's talking about the tabs in the metallic shielding, on the pcb.
Correct.
thoughtfix
2007-02-08, 03:39
I just blogged it too, along with some other news. Great work, Mr. Sdrman!
spycedtx
2007-02-08, 03:57
in contrast/compare, did someone do a full list of 770 chips and parts and jams and jellies? would make for a nice wiki page if done with columns of which has what, the exact part #, the function...
lbattraw
2007-02-08, 12:49
Or maybe USB powered accessories? :)
Great job!
Yes sir. The chip provides all the output voltages to support USB OTG and is a companion chip of the TUSB6010 which is the actual USB controller. If Nokia has actually hooked up the TPS65030 as per the intended use powered peripherals are definitely possible. At a minimum, keyboards, mice, and USB drives should work off the 100 mA provided. Network adapters might work, but it could be iffy. Of course if USB host is enabled the first thing you could do is plug it into a hub but I digress.
Larry
Beefy6969
2007-02-20, 03:43
So this will happen with just a firmware change "when Nokia is ready"?
Also regarding the USB cable, will we need to buy a proprietary cable from Nokia? Or purchase a USB adapter?
Will a USB laptop hard drive just plug in an play? Those dont require a power outlet.
OMG, I cant wait!!
Milhouse
2007-02-20, 06:49
Beefy - you missed the key statement from lbattraw
If Nokia has actually hooked up the TPS65030 as per the intended use powered peripherals are definitely possible.
There is speculation that Nokia have NOT fully wired up the socket, so powered USB may not be possible in which case a laptop disk drive will not work (and even if it did would probably suck the battery dry in a minutes!).
junjongboy
2007-04-27, 13:03
Great job, sdrman :)
I did tear down my N800 as well, looking for OMAP2420 package, but surprising can't find the processor in the main board. Any idea?
barry99705
2007-04-27, 21:48
Someone makes a usb-otg external self powered hard drive. It was discussed over at the zaurus user group forums. I'll see if I can find it. Ahh, the link is dead now. Google finds a few though.
Great job, sdrman :)
I did tear down my N800 as well, looking for OMAP2420 package, but surprising can't find the processor in the main board. Any idea?
Post up some pics. I'm sure someone can point it out for ya. :)
BTW barry99705, I bet the thing could fly to the moon if it had an Apollo X attached to it. :D
... unfortunately, as it sits (mine) it couldn't navigate an old man to the loo on Father's Day. :eek:
Great job, sdrman :)
I did tear down my N800 as well, looking for OMAP2420 package, but surprising can't find the processor in the main board. Any idea?
That's kind of a mystery to me too. My guess is that the omap is inside the samsung KBN00V00CM-D425. It's in central location and it's the biggest chip. I also see a few traces running to the epson lcd controller. Samsung makes a multiple chip package with their own s3c soc here:
http://www.samsung.com/products/semiconductor/MobileSoC/ApplicationProcessor/ARM9Series/SC32442/SC32442.htm
This chip include a cpu, ram, and flash. I imagine nokia wouldn't have much trouble getting samsung to build one of these with ti silicon inside. But it's big time trouble for one of us just to get the user's manual for one of these chips. :(
That's kind of a mystery to me too. My guess is that the omap is inside the samsung KBN00V00CM-D425. It's in central location and it's the biggest chip. I also see a few traces running to the epson lcd controller. Samsung makes a multiple chip package with their own s3c soc here:
http://www.samsung.com/products/semiconductor/MobileSoC/ApplicationProcessor/ARM9Series/SC32442/SC32442.htm
This chip include a cpu, ram, and flash. I imagine nokia wouldn't have much trouble getting samsung to build one of these with ti silicon inside. But it's big time trouble for one of us just to get the user's manual for one of these chips. :(
TI's chip is quite small from what I have seen in phones...
http://files.myopera.com/yodude/blog/347.gif
Previous to junjongboy's post I had assumed it was one of the three chips with TI's logo shown in sidrman's pics. However a closer look has me scratchin' my head now as well.
From what little I got on the Sammy chip it is listed as a "memory component" ???
The Jaaksi quotes I have read on the subject say "based on a TI OMAP 2420 SoC (system-on-chip)".
SeRi@lDiE
2007-04-28, 15:26
Mhhhhh nice find... maybe we have a docking stationg coming up soon... ?!?
Giving the N800 full Capabilities to HDD space and some new controllers IE: USB ports, etc... making it a ver nice MID!
Great job, sdrman :)
I did tear down my N800 as well, looking for OMAP2420 package, but surprising can't find the processor in the main board. Any idea?
As stated in previous posts, Jaaksi says the processor is "based on the OMAP2420"...
Based is a pretty broad term and I read somewhere awhile ago (before my involvement with an N800) that TI, STMicroelectronics, ARM, and Nokia entered into some kind of partnership agreement.
That STI chip at the bottom of sdrman's pics may be an end result although I can not find a description.
>> http://mcu.st.com/mcu/
Milhouse
2007-04-28, 20:25
Interestingly, according to the pictures in the first post there is no Tahvo or Retu (Fred or Barney) in the N800. Instead we have Betty (http://www.nokia-tuning.net/index.php?s=partlist_bb5&code=4376535#4376535) and Avilma (http://www.nokia-tuning.net/index.php?s=partlist_bb5&code=4396299#4396299) (Wilma?). :)
I can't find an OMAP CPU in the pictures - the Samsung IC does appear to be a memory component. Is the OMAP IC on the other side of the PCB? Judging from the OMAP 1710 ICs listed here (http://www.nokia-tuning.net/index.php?s=iccomp_bb5) (click an OMAP 1710 link for images) the IC should have OMAP stamped upon it, but won't necessarily be branded as a TI component. Sadly the nokia-tuning site has no pictures of an OMAP 2420, which I suppose may suggest it's now fully integrated into one of the other ICs, or the site isn't fully up to date!
The TI OMAP chip is under the Samsung chip. If you pry off the Samsung chip you can see the clearly marked TI OMAP 2420EZAC N YB chip underneath.
(Yes, you have to destroy the N800 to find that out.)
The TI OMAP chip is under the Samsung chip. If you pry off the Samsung chip you can see the clearly marked TI OMAP 2420EZAC N YB chip underneath.
(Yes, you have to destroy the N800 to find that out.)
Wow!..and thanks.
What occurred to present you with the opportunity to rip the silicon apart?
And while we are on the subject of chips...
Does anyone know if the FM radio chip can be used to transmit low level FM to a nearby FM radio as an additional sound output?
Wow!..and thanks.
What occurred to present you with the opportunity to rip the silicon apart?
Maybe he just know it? It was discussed in maemo lists (or on irc?). Someone asked why they added exactly 256MB of flash (too smal in his opinion) or maybe why they added it at all instead of some other solution (don't remember, maybe small flash + boot from bigger internal mmc) and someone from nokia responded that it comes in one chip with the CPU so they just used it as is. Also something along the lines that if one has bad blocks in flash it is bad because the flash chip cannot be replaced alone but together with CPU.
I've got some 770s I can (and will soon) take apart if anyone is interested... although if I remember right thoughtfix may have covered that. I need to perform surgery to try to make a few good units out of several bad ones.
Wish I had some non-working N800s, too...
Chewmeister
2007-11-25, 14:34
So is this N800 based to this(picture above) ?
Sorry that i am curious, but am i correct that N800 dont use all those things that are available in chip ?
http://focus.ti.com/graphics/wtbu/blockdiagrams/l4_omap2420.gif
According to this site:
http://pc.watch.impress.co.jp/docs/2007/1017/pda65.htm
the Samsung chip is just memory: 128MB DDR DRAM + 256MB flash
Chewmeister
2007-11-25, 23:11
According to this site:
http://pc.watch.impress.co.jp/docs/2007/1017/pda65.htm
the Samsung chip is just memory: 128MB DDR DRAM + 256MB flash
Please could u be more specific. I could not believe that Omap2420 is just 128mb ddr+flash memory. Or i just didnt understand your message correctly :(
That link u gave is asian language and i cant see it clearly.
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