I'm thinking about connecting a mmc or sd card to my se505 v1 router.
I looked for the gpio pins and that is what i found out:
gpio - function
0 - not soldered in led D26 left pin
2 - disabling causes reset
3 - wlan led
4 - www led
7 - disabling causes reset

As I read, I need 4 gpio pins and one of those should be input... had anybody found another gpio pin in this router?
Or maybe somebody connected a card to it?
The second not-soldered-in led is useless because it isn't nowhere connected.

I thought also about connecting a card to the pins, which are dedicated for a rs232 uart... As far I know it shoud be possible... but could somebody check it theoretically?

In my opinion the best approach is to get the pin-out of the switch chip (you could update the Wiki page in the progress ;-) ), and to check for the SDI, SDO and the SCLK pins using the "gpio" tool. After that you know 3 of the 4 needed signals. Using the GPIO assigned to the www-LED for the select signal,  you can make a matching MMC kernel module.

Alternatively you could sell your SE505V1 at ebay, get a SE505V2, upgrade the memory to 16, 32 or 64MB, and add a USB port. Even USB1.1 is much faster than the MMC mod :-)

I've got a spare Belkin F5D7230-4 V1000 here, which might be basically the same hardware as the SE505V1. It would be nice, if you could post an IC list and a picture of the PCB. It would be even better, if you could update the Wiki page.

Cheers
/T

I've made some photos of my SE505v1:


the whole package:
http://rapidshare.com/files/34417090/se505v1.zip.html

as you can see I've desoldered the shield plate, to see all parts.
Here is the part list:
BROADCOM BCM4702KPB (CPU)
EtronTech EM638165TS-7 x2 (RAM)
BROADCOM BCM5325A2KQM (switch)
ALTIMA AC101LKQT (Ethernet Transceiver?)
AMD AM29LV320DB (flash ROM)
and on the miniPCI card:
BROADCOM BCM4306KFB (wifi)

I think I don't know as much to edit the wiki:)
I hope this info will help somebody:)

PS. I'm using RC4 by now, no newer version works:/

edit: 2.06.2007
Today I've made some signal tracing on the J1 2x10 pin connector. That's what I found out:

 1:D0 | 2:
 3:D1 | 4:A0
 5:D2 | 6:A1
 7:D3 | 8:/OE
 9:D4 |10:
11:D5 |12:
13:D6 |14:VCC
15:D7 |16:VCC
17:   |18:GND
19:/WE|20:GND

As you can see the pinout has nothing in common with simillar connectors in WAP54g or WL300g. There are still some pins which I don't know what they are. The most important for me is /CS.

(Last edited by mamut-tme on 2 Jun 2007, 10:28)

I compared the pictures you published with the PCB of my Belkin F5D7230-4 V1000, and I think that it's basically the same board. I didn't remove the EMC protection, though.

For connecting a 8250 or 16450 compatible UART, you'll need A2 and a select signal. If the mentioned pins are NC, you're out of luck.  Did you check pin 2, 10, 12 or 17 for pulses after power-up?

no pulses at startup:/
Pin 17 goes high after startup, in a couple of days I'll retry with an Oscilloscope.

Hello,

I also like to add a SD or MMC Card to my Belkin F5D7230 V1000 and V1010. They have exactly the same PCB like your SE505.
Did you find the GPIO Pins ? Or did you find a possibilty to connect a card to J1 2x10 Pin connector ?

I've searched for hours to find somebody who has done the sd mod with this routers, but sadly I havn't found anything.

Thanks

Elektron