X50V pin layout?

[Emmtee]

Many thanks rodor :)

Your post confirmed pins 5 and 6 as accessory ID pins.
Interesting is the 3.3V pin, which is probably directed to the Axim, as no voltage can be measured coming from the axim, but it's possible. that V-out is activated only if a combination of signals is detected on the ID pins

we know "no signal" means vga, serial or usb cable
but this leaves the question, whatfor ID0 and ID1 can be used...
It would make sense to activate the supply voltage only "on demand" by pulling one or both ID pins to GND.

it's still unknown, if or what signals are routed to or from pins 18,19,20 and 24
but it would be sufficient for some audio signals (stereo out and stereo in?)

so in order to test the asumption we need to do this:
- fire up some multimedia player on the axim and make it play something while testing (you want to measure signals, not silence *G*)
- pull down ID0, then ID1 and then maybe both to gnd (both = dockingstation)
- while ID is pulled down measure if you find signals on the still unknown pins
please also measure pin 7 for voltage out - it could be it's only output when the ID-bitpair is set correctly!

:attention according to my measurements both ID pins are pulled to GND (0 ohm) by the dockingstation, so this combination is probably "known" now.
same applies for "none pins pulled down"... it's the default mode for serial vga or usb cable

if anybody has special accessory for the X50v then please check if you can measure some resistance from ID0 or ID1 to gnd, it should reveal what resistance to apply to the ports (if any) :)

PS: I've attached an updated version of the pinout (due to the somehow stupid attachment limits imposed here it's as a PDF, png would be small enough, but take more than 450 pixels to be readable!)

[Emmtee]

Hi everyone,

You guys made excelent work!!!! Thank you!!!
It seams that this thread is only place with full pinout for Axim 50/51.

But I've still got a question.

Has anybody tryed to connect to Axim wire GPS receiver based on new chipset SiRF Star III ???

I've got one. It's required one more COM pin - RI (It used for DGPS IN).
So, as I understand 5 and 6 pins on Axim connector are Access detect. One of tham should be DCD and another one is RI.

The question is which one RI?

even my old GPS unit (cable) has a DGPS in signal line, it's used to send DGPS signals to the GPS antenna (and it's microprocessor)... your GPS should work just fine if you simply connect rx tx and gnd :) (don't forget a voltage supply for the antenna) - DCD and stuff are just handshake - usually you can live without them and it still works fine :)
... your GPS will work even without a DGPS signal :)

[afarre]

On monday I bougth this device:
http://www.pdamods.com/proddetail.as...A11CRXDLX50MNT
It has a built-in serial port, it should have circuitry for TTL to RS232 levels conversion, it needs to take power from somewhere.
Probably I could add some more information about pinout once having device.
I am in Spain and it is coming from UK, just wait few days...

[rodor]

Your post confirmed pins 5 and 6 as accessory ID pins.
Interesting is the 3.3V pin, which is probably directed to the Axim, as no voltage can be measured coming from the axim, but it's possible. that V-out is activated only if a combination of signals is detected on the ID pins

I definitely think this is a power output which is activated by the ID pins.

we know "no signal" means vga, serial or usb cable

In the serial cables, how is the voltage converter powered? I'd guess such a cable would need some additional power to boost the voltage to proper RS-232 voltages?

so in order to test the asumption we need to do this:

I have sent an email to skimask to check if he has an AXIMBOB left over. I have not gotten a reply yet. Maybe he is on vacation or something.

[Emmtee]

In the serial cables, how is the voltage converter powered? I'd guess such a cable would need some additional power to boost the voltage to proper RS-232 voltages?

Actually that has already been solved long ago with two transistors and a few components - for example it was used it in casio's serial cable for PC-pocketdatabase.... there's even an AFAIK expired patent on it.

I've even seen a more recent implementation of a similar approach - so it's possible... the trick is to use the higher 15V coming from the PC's RS232 and a schematic that doesn't require as much power as an fully featured multi-channel 232-converter-chip

[skimask]

I definitely think this is a power output which is activated by the ID pins.



In the serial cables, how is the voltage converter powered? I'd guess such a cable would need some additional power to boost the voltage to proper RS-232 voltages?



I have sent an email to skimask to check if he has an AXIMBOB left over. I have not gotten a reply yet. Maybe he is on vacation or something.

I'm not on vacation anymore (also I've been stuck at work entirely too much, you know how it is).
I don't have any boards left over because I never got enough feedback on how many AXIMBOB boards to have made. I'm still all for having a bunch made, it just depends on how many is 'a bunch'. Obviously, the more, the cheaper. I don't have any solid numbers or $$$ figures at the moment, otherwise I'd share them.

[Emmtee]

Talking for myself I don't need a BOB, but it would be handy in order to check the accessoir detection pins 5 & 6, and if they have an effect on pin 7when they are pulled to gnd or interconnected with different resistors.

:)

[Cino]

i would be interested in one if the price isn't too high

[bigbop]

Talking for myself I don't need a BOB, but it would be handy in order to check the accessoir detection pins 5 & 6, and if they have an effect on pin 7when they are pulled to gnd or interconnected with different resistors.

:)

I answered this question 11 months ago - yes, pulling one or both pins 5 or 6 to ground will cause pin 7 to output 3.3 Volts. This thread: http://www.aximsite.com/boards/showt...aximbob+pinout . I sent an email to Aximbob to update his pinout diagram but he never did or replied back to me.

The only thing I haven't been able to determine is how much current you can pull from pin 7. You shouldn't have any problem powering a MAX3232 chip though.

I was also speculating that pins 20 & 24 were USB host pins but I've never been able to get my hands on a dead X50 board to trace the circuit - and I'm not going to kill my Axim to find out ;)

[Jakub]

Hi,!
any luck to get the Audio Out form bottom connector?

the manufacturers are doing it somehow!
see this one or others.

SEIDIO NAVIGATOR KIT - *GI25AXX50R11B1I0

or I am wrong?
perhaps somebody have such to have a look inside? :)

[Jakub]

Hi,
any chance for audio Out pinouts? becouse I can not locate them.
perhaps they need to be activated?

Regards

[Emmtee]

Best suggestion known yet: use Bluetooth or the Headphone-Connector

[Bill_Todd]

Hi,!
any luck to get the Audio Out form bottom connector?

the manufacturers are doing it somehow!
see this one or others.

SEIDIO NAVIGATOR KIT - *GI25AXX50R11B1I0

or I am wrong?
perhaps somebody have such to have a look inside? :)

I'd bet good money that it has a lead that plugs into the headphone socket on the Axim (why not phone them and ask the question?)


There was an extensive investigation of the connector pins in this thread:

http://www.aximsite.com/boards/x50-x...-usb-host.html

No audio pins were found on the Axim's sync connector.

Is this what you want?

[bigbop]

I'd bet good money that it has a lead that plugs into the headphone socket on the Axim (why not phone them and ask the question?)


There was an extensive investigation of the connector pins in this thread:

http://www.aximsite.com/boards/x50-x...-usb-host.html

No audio pins were found on the Axim's sync connector.

Hey - I remember that thread! I wish I had time to continue with trying to figure out how to get the USB host interface working on the X50

Unfortunately, other pressing matters have taken over - BUT - I haven't forgotten about it.