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JED
Joined: 13 Jul 2006 Posts: 8
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ENC28J60 "WOL" signal? |
Posted: Sat Oct 07, 2006 7:59 pm |
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Does anyone know what the WOL (pin 5 on a DIP package) signal does on the ENC28J60? I have a olimex NIC based on the ENC28J60 and its documentation mentions a “WOL” signal on pin 5 of the ENC28J60. The data sheet for the ENC28J60 doesn’t mention WOL and it states that pin 5 is reserved and should not be connected but the CCS drivers assign WOL to an i/o pin. The chip seems to function with WOL(pin5) hooked up to the pin defined in the CCS driver but I don’t want to fry anything or waist i/o. Any help would be greatly appreciated.
Regards,
JED |
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dyeatman
Joined: 06 Sep 2003 Posts: 1924 Location: Norman, OK
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Posted: Sat Oct 07, 2006 8:12 pm |
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WOL is the Wake On Lan signal for initiating a processor wakeup from an incoming LAN connection.
A quick Google search on "ENC28J60 WOL" found this link:
shop.tuxgraphics.org/snippets/enc28j60.pdf
Section 12.0 fully explains the WOL usage and implementation.
Got to the Microchip site here:
http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=1335&dDocName=en022889
for all the data and errata sheets on the controller.
BTW: I neglected to answer your last two questions:
1. If you connect this signal the PIC pin MUST be an input.
2. No, it does not have to be connected unless you want to use WOL.
Last edited by dyeatman on Sun Oct 08, 2006 9:54 am; edited 2 times in total |
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asmallri
Joined: 12 Aug 2004 Posts: 1634 Location: Perth, Australia
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Posted: Sat Oct 07, 2006 10:51 pm |
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The original schematics from MCHP connected up the WOL pin. This was dropped on the latest PICTail board. _________________ Regards, Andrew
http://www.brushelectronics.com/software
Home of Ethernet, SD card and Encrypted Serial Bootloaders for PICs!! |
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JED
Joined: 13 Jul 2006 Posts: 8
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Posted: Sun Oct 08, 2006 11:05 am |
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Thank you both for the quick response. Sadly it didn’t occur to me to google it. I haven’t had time to do any further research but it looks like it is an option I probably won’t use for the time being. |
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