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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