How to make it work?

#1 Wed, 27 Jun 2007 - 13:09 68kMLA

So as you may remember, a few months ago i got a freebie Canon multifunction device. Well it turns out its borked, and as such i'm stripping it to see what parts i can get that are of use. One little gem i found was the PCMCIA card cage, which appears to simply just be a USB -> PCMCIA adaptor that allows you to use a 16 bit Type I/Type II PCMCIA card on USB.

The device is this one to be exact.

The connector that goes to the printer's mainboard is a 5 pin connector. USB uses 5 pins. Hmm.

But...how can i get the pinouts for the connector? I know you're supposed to use a multimeter, but i've never done this before, so can someone give me a crash course?

Thanks in advance

#2 Wed, 27 Jun 2007 - 21:13 68kMLA

Well, if you could power the thing up while partly assembled, the +5 and grounds will announce themselves to your voltmeter. Failing that, you could find any motherboard part like a 74xx series IC or microprocessor, or even the bypass caps, identify their +5 and gnd from a datasheet, and measure back over to the connected but powered down adaptor looking for as close to zero ohms as the resistance of your test leads and probes allows. After finding +5, ground return, and shield return ground on the adaptor, look for the low speed identifying pullup resistor 1.5K +-5% ohms to +5V on the downstream USB 1.1 PCMCIA adaptor side D- signal. The remaining signal is D+. From somewhere on the net I once downloaded the huge USB 2.0 spec, the 1.1 compatibility info is in figure 7-21 and of course the connector pinouts for std USB connectors are there also. [

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The needed additional software, if any, I leave to others more knowledgeable and determined...

#3 Thu, 28 Jun 2007 - 00:05 68kMLA

Thanks for your advice, wally.

Software's already been taken care of, its on versiontracker.

#4 Sun, 8 Jul 2007 - 13:18 68kMLA

So as you may remember, a few months ago i got a freebie Canon multifunction device... One little gem i found was the PCMCIA card cage, which appears to simply just be a USB -> PCMCIA adaptor that allows you to use a 16 bit Type I/Type II PCMCIA card on USB.

Where on the original was this found? What purpose did it have?

#5 Sun, 8 Jul 2007 - 14:32 68kMLA

...how can i get the pinouts for the connector?

There you go.

de

#6 Tue, 10 Jul 2007 - 05:23 68kMLA

Thank you, equill, but i was talking about the connector on the PC card cage, which is a nonstandard connector.

#7 Tue, 10 Jul 2007 - 05:48 68kMLA

The same technique as that which I used: dial-in 'pinout' and the connector type, should work for you. For example, here is the PCMCIA card, and here is CardBus.

de