JP connector pinouts?

bushing · June 04, 2005, 10:47:17 PM

The PB board that I have does not match up with the JP connector pinouts in the FAQ section -- rather, it's the board that's photographed in the same thread.

I have:

JP1: 2-pin jumper, with a jumper on it, next to a single pin that's labelled "156" (maybe that's 7312 pin 156, ie reset, and this is the internal boot rom enable jumper?

JP2: 2-pin jumper, no jumper present

JP3: 2x7 pads (no connector)

JP4: same footprint as JP3, but with a 2x7 header socket.

I don't have a JP5-JP9.

Hopefully, someone can tell me which of these corresponds to at least the ARM JTAG, and maybe the ARM UART1?

*bangs head against wall*

Ben

judb · June 05, 2005, 02:12:21 AM

Can you send me a high rez photo of your board? Top and Bottom Please. Try and have little to no glare if possible.

Thanks.

bushing · June 05, 2005, 05:24:31 PM

QuoteCan you send me a high rez photo of your board? Top and Bottom Please. Try and have little to no glare if possible.

Thanks.

I can, if you'd like ... but it is the same one as in the FAQ? :/

[ie the photos of the board in the faq do not match up with the textual description.]

-b

judb · June 05, 2005, 05:41:23 PM

http://judb.phathack.com/keg1-02.jpg
http://judb.phathack.com/keg1-03.jpg

Those are the pictures that are broken in the FAQ.. thats the board I did the traces on.. its a Kenwood Music Keg / Phatbox v1.0 board.

bushing · June 05, 2005, 09:37:19 PM

Quotehttp://judb.phathack.com/keg1-02.jpg
http://judb.phathack.com/keg1-03.jpg

Those are the pictures that are broken in the FAQ.. thats the board I did the traces on.. its a Kenwood Music Keg / Phatbox v1.0 board.

Gotcha. So... I have the one that's in http://www.phathack.com/phatbox.jpg . Is that clear enough, or do you need me to scan mine in?

FWIW, it looks like in your picture, there are at least some sort of traces leading away from the JTAG pins on the EP7312. There are none on mine. It could be that they run straight under the chip ... or they may have totally removed all of that wiring from the board. I don't see any resistors marked R27-R32 at all on my board.

I suppose I could always solder right to the chip...

Ben

judb · June 05, 2005, 09:44:01 PM

well, you can flip the board over and see if they come through the board..

The JTAG interface is most certianly wired like the FAQ states as I traced the pins and verified connectivity with a DMM.

para · June 05, 2005, 09:46:50 PM

FYI, FAQ photos updated...

bushing · June 05, 2005, 09:57:33 PM

Quotewell, you can flip the board over and see if they come through the board..

The JTAG interface is most certianly wired like the FAQ states as I traced the pins and verified connectivity with a DMM.

Oh, I'm sure yours are. I just think they took that connector entirely off the rev B boards ... I tried flipping it over and didn't see any vias that were obviously connected, and like I said, no resistors.

From other threads, it sounds like we may not need it, though.

Ben

sbingner · June 20, 2005, 05:34:07 AM

Quote

Oh, I'm sure yours are. I just think they took that connector entirely off the rev B boards ... I tried flipping it over and didn't see any vias that were obviously connected, and like I said, no resistors.

From other threads, it sounds like we may not need it, though.

Ben

Negative, I managed to trace my C710 out and C710-JP4==CX910-JP8 so JP4 is the serial port on there

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JP connector pinouts?