mv-ic (memory card reader) questions

hi there,

i'll get a 4-slot mvs board soon and i'd like to hook up a memory card reader (and headphone jacks).
yeah, i know, that it's no big deal, if you have the mv-ic and the needed cables, but i thought of something else :

i've got a non working 2-slot (video ram error) and seeing it laying around and collecting dust makes me kind of sad.
now, i got the idea, that it might be possible to desolder the memory card slot.

to put it in short :
i'd like to build my own mv-ic, but i could use some more info.
can someone please get me a high res scan of the pcb?
btw : what are the dimensions of the original mv-ic?

thanks in advance.

edit : engrish. loco

<small>[ March 07, 2003, 05:07 AM: Message edited by: supergoose79 ]</small>

Yes it is possible, nice project.
I will come up with a pin out soon, you will need a 68 pin ribbon or any combination. All pins are not used btw.

Infact there is no pinout required, its one for one as the socket is the same. Will take some close up piccys of the ic pcb and PM them.

thanks, ttooddddyy. a pinout would be a huge help.
it's just a thought for now, but imo it's about time for kicking the shadow 4's shiny ass.

other than that i'm debating, whether or not to make the system s-video only. (even through i could use scart-rgb as well.)

ttooddddyy:
Infact there is no pinout required, its one for one as the socket is the same. Will take some close up piccys of the ic pcb and PM them.

Click to expand...

i know, but i'd like to solder the wires straight to the pins of the desoldered memo card slot. an other proble is, that i don't have those original cables. that's why i don't really know, what to connect. well ... a hi res scan of the mv-ic's pcb might help.

that said, i hope, that there aren't any other chips on the mv-ic's pcb.

supergoose79:

ttooddddyy:
Infact there is no pinout required, its one for one as the socket is the same. Will take some close up piccys of the ic pcb and PM them.

Click to expand...

i hope, that there aren't any other chips on the mv-ic's pcb.

Click to expand...

There are no chips or other components on the MV-IC. I even ran two of the ones I had through the dishwasher to clean them up (short cycle). glee

YESSS! multi_co
thanks for the good news.

I was bored at the office this morning and did a continuity check on the MV-IC card reader to the mobo. Now we have the 68 pin reader pin out to the two 60 pin sockets on the mother board CN6&7. Will test it tomorrow before I post any duff info.

Supergoose, will send the piccys soon.

<small>[ March 08, 2003, 06:42 AM: Message edited by: ttooddddyy ]</small>

sweet.
i got the 4-slot board today, but i still have to test it anyways.

Damn, I had the MV-IC pin out info and piccys ready to post then a power out, must get a ups. blow_top

The pin outs for the MV-IC memory card reader are as follows. This will allow a direct hook up from the 68 pin memory card reader socket and the motherboard bypassing the MV-IC.It should be noted that there are no active discrete components on this board. I will add some close up piccys later as my image hosting is down at the moment. BTW this has not been hardware tested yet but the continuity has been double checked several times, Im confident its OK but accept no responsibility for any fuck ups.

Looking at the component side of the MV-IC with the reader socket slot facing forward, the 68 pins are laid out as shown below.(in 4 rows)

Rear of socket 2,4,6,8 etc;........34
Third row 1,3,5,7 etc;........33
Second row 36,38,40,42 etc;....68
Front (first row) of socket 35,37,39,41 etc;....67

Now the connections from the 68 pin reader socket to the two 60 pin interconnects, CN 6 and CN 7 from the MV-IC to the same sockets on the motherboard.


CN6 : CN7
-------------------------------------------------
CN6/ Reader CN6/Reader: CN7/Reader CN7/Reader
-------------------------------------------------
1A GND 1B GND : 1A 2 1B GND
2 36 GND : 2 3 GND
3 37 GND : 3 4 GND
4 38 GND : 4 5 GND
5 39 GND : 5 6 GND
6 40 GND : 6 7, 42 GND
7 41 GND : 7 8 GND
8 42,7 GND : 8 9 GND
9 NC GND : 9 10 GND
10 NC GND : 10 11 GND
11 NC GND : 11 12 GND
12 46 GND : 12 13 GND
13 47 GND : 13 14 GND
14 48 GND : 14 15 GND
15 49 GND : 15 51,52,17,18 GND
16 50 GND : 16 51,52,17,18 GND
17 51,52,17,18 GND : 17 19 GND
18 51,52,17,18 GND : 18 20 GND
19 53 GND : 19 21 GND
20 54 GND : 20 22 GND
21 NC GND : 21 23 GND
22 33 GND : 22 24 GND
23 61 GND : 23 25 GND
24 NC GND : 24 26 GND
25 NC GND : 25 27 GND
26 64 GND : 26 28 GND
27 65 GND : 27 29 GND
28 66 GND : 28 30 GND
29 67 GND : 29 31 GND
30 GND 30B GND : 30 32 30B GND

There is also a 4 pin audio socket on the board,that connects to the two 3.5mm stereo headphone jacks which are connected in parallel.(standard connection ie tip left, ring right and ground)

This socket is marked MAIN PCB, the pin out is:

1. Left
2. Ground
3. Ground
4. Right


The table doesnt line up very well on the post will link to a more readable version.

<small>[ March 12, 2003, 07:44 AM: Message edited by: ttooddddyy ]</small>

awesome. thanks.
i might shoot you some more questions as soon as i got the mc slot off of my board.

Hey,

Does anyone know where I can pick up the cables for the memory card reader? I just picked up one on Ebay and it didn't come with them? Any help would be greatly appreciated. Thanks...

SeaWolf69 said:

Hey,

Does anyone know where I can pick up the cables for the memory card reader? I just picked up one on Ebay and it didn't come with them? Any help would be greatly appreciated. Thanks...

Click to expand...

Take three PC hard drive IDE cables that are each long enough to reach from the two sockets (CN6 & 7) on the MV-1C to the same on the MVS mother board.

Standard HDD IDE cables have 40 connections (two rows of twenty)

Carefully split one IDE cable down the center to make two identical cables, each with 20 connections (two rows of ten)

You will now be able to use one and a half PC IDE cables to connect each of the two 60 pin connections from the card reader to the board. It will require some trimming with a sharp knife of the plastic plug ends as the edges of the IDE plugs overlap the sockets slighty. Also the PC IDE cable plugs will have keyways, these are easily trimmed off.

Be carefull with the polarity, you could epoxy the joined plugs together for good measure.

Why they choose to use 2 X 60 pin cables baffles me as less than half of these are used. Most connections are common ground which isnt really necessary here imho.

Take three PC hard drive IDE cables that are each long enough to reach from the two sockets (CN6 & 7) on the MV-1C to the same on the MVS mother board.

Standard HDD IDE cables have 40 connections (two rows of twenty)

Carefully split one IDE cable down the center to make two identical cables, each with 20 connections (two rows of ten)

You will now be able to use one and a half PC IDE cables to connect each of the two 60 pin connections from the card reader to the board. It will require some trimming with a sharp knife of the plastic plug ends as the edges of the IDE plugs overlap the sockets slighty. Also the PC IDE cable plugs will have keyways, these are easily trimmed off.

Be carefull with the polarity, you could epoxy the joined plugs together for good measure.

Click to expand...

Ok,

I will try it out, I just happen to have a friend with all the parts that I need. Questions? Do I leave the plastic plugs on and just cut one in half? Will the plugs fit in the MV-1C alright? I understand to trim off the keyways. Just would like to shed a little more light on it before I start. Thanks for the info

Yes you will need to cut the plugs in half on the 3rd ide cable, so you end up with one 40 pin plug(original) and one 20(half). side by side (after trimming the plastic plug ends where required, they overlap a little) you get the 60 pins connected.

Hmmm?

I think I will wait to see if Supergoose79 can mount the MV-IC onto the 4 slot. If so, I would like to do that as well .

It's very easy to do, infact so easy that I managed it myself. I bought a 68-Pin PCMCIA/Jeida standard card reader for £2.99 and soldered direct from the pins to the memory card reader harness on the MVS board.I'm not sure that it works as I ddon't have a memory card, but I see no reason why it wont.

Where did you get the PCMCIA socket from ??
Remember there are several types of PCMCIA sockets and reader interfaces.
The ones that work with Neo are type 2 (3.5mm thick) there are other type 2s that have a different dimention.

I have ways and means....
Here are the specs of the card connector I bought:
Fujitsu Single card socket, conforming to PCMCIA type 2 and JEIDA standards.
It has an eject mechanism which helps a lot with installing it under the casing so you don't have to wrench out the memory card, just press a button and out it comes.
I can supply these at the costs below. These are prices for single units. There will be a discount at 12 or more pieces and a further discount at 30 pieces.

Fujitsu:
Single standard £4.50
Single eject £7

Ouplin:
Single standard £3.40
Single eject £5

PM me if interested and we'll sort something out. I can allso provide finer details for those that need it. I guess I can source most components if need be so PM if there's something you are having difficulty in finding.

PM sent

J0e Musashi said:

, but I see no reason why it wont.

Click to expand...

that's what i thought. didn't get it to work by now, but i also didn't touch it in ages. never had the time.

please send me a pm with some more info about those connectors. thx.
btw ... did you find some info about the hyper?

Shiny......................

supergoose79 said:

but imo it's about time for kicking the shadow 4's shiny ass.

Click to expand...

The Shadow4 has the best baseplate of all the consolized multislots I've seen so far