The XDA2 connector pinout

[akira]

every thing seems to be the same
though there are differences in the sound output
pin 19 must be connected to ground for sound through the connector
pin 19 cant be connected to +6v or else the whole xda2 is not responding anymore

pin 1 (mic) must be amplified
going to buy a small mic ampliefier on 12v tomorrow

[jpiek]

Hmm, considering people still use their XDA I carkit, i suppose it should work...

However, the audio i tapped from the bottom connector is dead too...
Only hing i can think of is that HTC rewired it so the bottom connector only gives audio if you ground Pin 19 (Car_on).

If your 100% on pin 3 & 4 being #ground, they might have made audio mono, and switched pin 2 & 3, audio out on pin 2 and ground on pin 3. For audio that would still work...

Btw the headset-out is filled with a rubber piece, not handy for quickly attaching an audiopug :( i'm tinking of cutting it, but that's a bit drastic for a temporary workaround to use audio-out...

[SuperDDD]

Btw the headset-out is filled with a rubber piece, not handy for quickly attaching an audiopug :( i'm tinking of cutting it, but that's a bit drastic for a temporary workaround to use audio-out...


You took the words straight out of my mouth :?

[jpiek]

All i really want is a Bluetooth handsfree profile !!! :twisted:

[akira]

tomorrow morning ill try to get it working

maybe if i put +6v to CAR_ON it helps
the phone goes to speaker mode
maybe micfroon will work then to

audio pins are the same

so mic in would be pin 1

i think there is only a slight difference

audio was normally always been put through the connector
not it isnt anymore

**update

the connector is the same
the 19 pin function is different
+ will block every function of this phone, so thats the problem with my own carkit, i have connected it this way
- will send audio only through the connector
problem is now that i want to use a mic
when i connect a mic to pin 1 and GND, there is not sound
i know that pin one really is the mic, cause when i tap the tip of the wire while recording audio or test calling i hear ticks..

what kind of microfoon must i connect to pin one
must the same as the carkit version i think

or what connection will let the xda2 go into speaker mode auto

also there is no audio being put through the connector if pin 19 is not connected to ground

**update
also very intresting and maybe my awnser
http://www.xda-developers.com/forum/viewtopic.php?t=1595&start=0&postdays=0&postorder=asc&highlight=mic

[jpiek]

maybe if i put +6v to CAR_ON it helps
the phone goes to speaker mode
maybe micfroon will work then to


In speakermode you dont't have audio trough the connector...


the connector is the same
the 19 pin function is different
+ will block every function of this phone, so thats the problem with my own carkit, i have connected it this way
- will send audio only through the connector
problem is now that i want to use a mic
when i connect a mic to pin 1 and GND, there is not sound


I have the opposite problem, i want audio-out for a external speaker, but no ext. mic. (din't get one to work).

what kind of microfoon must i connect to pin one

One that doesn't want a wire to any power.
I bet one of an old nokai headset might work...

[quote]
or what connection will let the xda2 go into speaker mode auto
also there is no audio being put through the connector if pin 19 is not connected to ground


Are you sure the wiring is the same, or are you just guessing ?

[akira]

Quote:

or what connection will let the xda2 go into speaker mode auto
also there is no audio being put through the connector if pin 19 is not connected to ground



Are you sure the wiring is the same, or are you just guessing ?

i am sure

i have tested loads of micrfoons
from nokia headset etc

external sound source is the awnser

i connected a mp3 player and it records fine
now i just need to make an external sound aplifiar for the microfoon
and set pin 19 to GND then its all done

got some old nokia carkit
maybe i can mod it ;)

[jpiek]

You mean you got te mic-in to accept audio, but only from an amplified source like a MP3-player ?

Here on xda-developers.com the said the mic-in should't be amplified...
But, hey, they can be wrong to...

[akira]

when i connect a normal mic (tested 4 different ones) there is absolute sillence

when i connect my mp3 player and turn up the volume then there is sweet sound :)

[jpiek]

Ok, talked to the techie-colleage today :

Headset mic is a condensator mic.
pulls approx. 1V (from audio signal)

What we need is a 'spool'-mic, they seem to be a bit more rare than te condensator ones... these pull approx. 0,6V His thoughs where to use a small speaker and test if it will work as a mic. Then try a real mic...

Or get a velleman kit with condens.mic and amplification ;)

[Sebi]

On XDA2 pin2 is NOT GND !

[vcp]

I agree with last post, pin2 in XDA2 is not conected to GND pins 5, 16, 17,18 (all them connected)
When I ground pin2, a little beep (wav) is heard, but nothing seems to happen.
Can anybody point what's the use for pin2 ??

I'm trying to build my own car kit with no success:
I can´t obtain audio out whith or without grounding pin19

[vcp]

I must correct my last update.
I obtain audio when in phone mode, but not during playing waves or TomTom instructions. Even Ring Tones do not go out trough the bottom connector.
So is it a software problem ?
Can function of pin2 br related to this ??
Anybody knows 100% XDA2 connectro pinout ??
myxda web page states that most of the accesories from xda1 will NOT work on xda2

[jpiek]

PIN 2 IS ground, or the XDA 1 carkit wouldn't give any sound in combination with an XDA 2 !

The XDA 2 seems to give sound ONLY for phone :( be it through carkit or BT headset.
If that's true, and if that's the hardware on the XDA 2 then i want my XDA 1 back !!!

[rydnic]

is there any solution yet to fix the bad audio quality at the connectors car_audio r/l ?