qi_avt2 v1.0 board status
Adam Wang
adam at qi-hardware.com
Wed Sep 30 21:20:01 EDT 2009
Carlos Camargo wrote:
> I'm starting the tests
>
>
> I'm using:
>
> ##########################################################################
> root at xburst:~# uname -a
> Linux xburst 2.6.27-dirty #40 PREEMPT Wed Sep 23 12:28:02 COT 2009
> mips unknown
> ##########################################################################
>
> root filesystem on SD card works fine, is necessary change in
> include/configs/qi_lb60.h
> ##########################################################################
>
> #define GPIO_SD_DETECT (3 * 32 + 0)
>
> to:
>
> #define GPIO_SD_DETECT (3 * 32 + 15) // qi_AVT2 v1.0 use GPD15
>
> And
> #define SDRAM_COL 9 /* Column address: 8 to 12 */
>
> to:
>
> #define SDRAM_COL 10 /* Column address: 8 to 12 */ //
> qi_AVT2 v1.0 have 64MB
> ##########################################################################
>
> Linux use 64MB:
>
> ##########################################################################
> root at xburst:~# free
> total used free shared buffers cached
> Mem: 61088 22336 38752 0 1228 10320
> -/+ buffers/cache: 10788 50300
> Swap: 0 0 0
> ##########################################################################
>
> I've already compile mplayer from ingenic source and I can play a mp3
> file I can hear the sound on headphones, but no on speaker, maybe
> AMPEN is not enabled, I will change the AMPEN signal value and try
> again tomorrow.
>
given AMPEN "high" to enable.
> I've already attached a USB memory but the kernel don't detect it,
> maybe the USB_ID signal has a wrong value, I will tyr to change this
> value tomorrow an d try again
>
>
The Adapter when you plug into avt2 board (without plugging your USB
memory) will automatically let USB_ID signal to be as "low" condition.
<<< The +5V should already provided out.
Yeah...may be the initial value. Could you try to disable the USB_ID pin
in s/w to check it first?
Adam
> Best Regards
>
>
> Carlos
>
>
> On Wed, Sep 30, 2009 at 5:59 PM, Carlos Camargo <cicamargoba at gmail.com
> <mailto:cicamargoba at gmail.com>> wrote:
>
> Hello
>
> Very beautiful pictures Adam!!!
>
> I have two boards with 64MB and works fine, I have a little
> problem with the LCD connector, I Think that this connector change
> its shape in the soldering process, so I replace this connector in
> both boards by another one (thanks Adam) and I can use both LCDs.
> I'm starting to test the sound and USB host port. I'm attaching
> some Nano pictures [1] New Nano show openwrt Logo [2] Using a
> custom FTDI USB-serial (I think that we can provide this board
> with a Nano developer version) [3] With usb host connector attached
>
>
> [1] http://downloads.qi-hardware.com/hardware/hacking/Nano_works.jpg
> [2] http://downloads.qi-hardware.com/hardware/hacking/usb_serial.jpg
> [3] http://downloads.qi-hardware.com/hardware/hacking/usb_host.jpg
>
> Best Regards
>
>
> Carlos
>
>
>
> On Wed, Sep 30, 2009 at 5:05 AM, Wolfgang Spraul
> <wolfgang at qi-hardware.com <mailto:wolfgang at qi-hardware.com>> wrote:
>
> Andres,
>
> > The price of the jz4720 plus the bonding wire price is
> competitive
> > against the jz4740 price plus the BGA soldering process?
>
> Well that's a very long story, as always with prices :-)
> COB is getting more popular in China (and that means in most
> consumer
> electronics), because it is cheaper. At least that's what the
> manufacturers
> are saying but I'm sure companies that are producing millions
> of devices each
> month know their numbers.
>
> For the 20 boards we produced, we paid about 30 USD / chip for
> the COB :-)
> Not exactly cheaper...
> See a more detailed cost breakdown for the 20 boards at
> http://downloads.qi-hardware.com/hardware/qi_avt2/v1.0/report/expense/avt2_v1.0_expense.ods
> For 500 boards the price would go down to ca. 15 USD / chip
> for the COB alone.
>
> Now, one problem we had was that Adam could not find COB
> places in northern
> Taiwan that could do .8mil aluminum wires (see Adam's mail
> that you just
> responded to). So in order to just 'get the boards done', he
> chose .7mil
> gold wires.
>
> Going forward we need to improve all this.
> Maybe for another few small runs we continue to do COB,
> especially since
> Adam has it all figured out now. But then we will probably
> look into QFP/QFN
> versions, or BGA. The problem with switching to BGA on the
> current NanoNote
> board was that Adam said because the other side of the PCB was
> all covered
> by keys, we would need to go from a 4-layer to a 6-layer PCB
> when using BGA.
>
> Wolfgang
>
> On Tue, Sep 29, 2009 at 10:38:44PM -0500, Andrés Calderón wrote:
> > On Tue, Sep 29, 2009 at 10:52 AM, Adam Wang
> <adam at qi-hardware.com <mailto:adam at qi-hardware.com>> wrote:
> > > Hi Carlos,
> > >
> > > Sorry for the late, you can check those pictures of actual
> bonding wire
> > > here[1]. It's an 0.7mil golden wire. I can illustrate a
> little bit in report
> > > to show how make
> > > it layout right. Local vendors here are having aluminum
> capability but can
> > > not meet our die's pitch between pads, because they have
> only 1.0 mil. Will
> > > not have
> > > good quality in aluminum process on our case. Fortunately
> here have 0.7 mil
> > > gold wire process but expensive. :-) And most early
> vendors here had moved
> > > into China.
> > >
> > > [1]
> > >
> http://downloads.qi-hardware.com/hardware/qi_avt2/v1.0/pcb/cob/bonding_wire/
> > >
> >
> > Amazing pictures (the bonding_wire7.jpg is my new desktop
> background :) )
> >
> > The price of the jz4720 plus the bonding wire price is
> competitive
> > against the jz4740 price plus the BGA soldering process?
> >
> > BR,
> >
> > Andrés Calderón
> > Cel: +57 (300) 275 3666
> > Email: andres.calderon at emqbit.com
> <mailto:andres.calderon at emqbit.com>
> > Web: www.emqbit.com <http://www.emqbit.com>
> >
> >
> > > Adam
> > >
> > > Carlos Camargo wrote:
> > >
> > > Hi Adam
> > >
> > > Can you please upload a processor close-up photo?
> > >
> > > Best Regards
> > >
> > >
> > > Carlos
> > >
> > >
> > > On Sun, Sep 13, 2009 at 8:30 AM, Carlos Camargo
> <cicamargoba at gmail.com <mailto:cicamargoba at gmail.com>>
> > > wrote:
> > >>
> > >> hi adam, good job. i want one new board :).
> > >> when finish all tests, please check the kicad brd file.
> we want that
> > >> the next board will be designed in kicad.
> > >> We've already uploaded pcb and footprints files, all
> components placed,
> > >> and remove a lot of test-points
> > >>
> > >> Can you please check if the placement and size are right ?
> > >>
> > >> Best Regards
> > >>
> > >>
> > >> Carlos
> > >>
> > >> On Sun, Sep 13, 2009 at 3:52 AM, Adam Wang
> <adam at qi-hardware.com <mailto:adam at qi-hardware.com>> wrote:
> > >>>
> > >>> Hi All,
> > >>>
> > >>> The picture of avt2_v1.0 board with die is here[1].
> > >>> And it just works and shown up[2].
> > >>> I'll keep do more basic IO tests.
> > >>> Adam
> > >>>
> > >>> [1]
> > >>>
> http://downloads.qi-hardware.com/hardware/qi_avt2/v1.0/smt/pictures/top_jz4720.jpg
> > >>> [2]
> > >>>
> http://downloads.qi-hardware.com/hardware/qi_avt2/v1.0/report/photos/avt2_v1.0_works.JPG
> > >>>
> > >>> Adam Wang wrote:
> > >>>>
> > >>>> Hi All,
> > >>>>
> > >>>> We're now on the process to produce small run of avt2
> board, here is the
> > >>>> top side of avt2 without jz4720 temporarily;
> > >>>>
> > >>>>
> http://downloads.qi-hardware.com/hardware/qi_avt2/v1.0/smt/pictures/top.jpg
> > >>>> Will keep you posted later.
> > >>>> Adam
> > >>>
> > >>>
> > >>> _______________________________________________
> > >>> Qi Developer Mailing List
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> > >>
> > >>
> > >>
> > >> --
> > >> Carlos Iván Camargo Bareño
> > >> Profesor Asistente
> > >> Departamento de Ingeniería Eléctrica y Electrónica
> > >> Universidad Nacional de Colombia
> > >> cicamargoba at unal.edu.co <mailto:cicamargoba at unal.edu.co>
> > >
> > >
> > >
> > > --
> > > Carlos Iván Camargo Bareño
> > > Profesor Asistente
> > > Departamento de Ingeniería Eléctrica y Electrónica
> > > Universidad Nacional de Colombia
> > > cicamargoba at unal.edu.co <mailto:cicamargoba at unal.edu.co>
> > >
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>
>
> --
> Carlos Iván Camargo Bareño
> Profesor Asistente
> Departamento de Ingeniería Eléctrica y Electrónica
> Universidad Nacional de Colombia
> cicamargoba at unal.edu.co <mailto:cicamargoba at unal.edu.co>
>
>
>
>
> --
> Carlos Iván Camargo Bareño
> Profesor Asistente
> Departamento de Ingeniería Eléctrica y Electrónica
> Universidad Nacional de Colombia
> cicamargoba at unal.edu.co <mailto:cicamargoba at unal.edu.co>
> ------------------------------------------------------------------------
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