# SAM7X256 and DP83848I

**URL:** <https://forums.freertos.org/t/sam7x256-and-dp83848i/4730>\
**Category:** Kernel\
**Created:** [June 14, 2007, 8:01pm UTC](https://forums.freertos.org/t/sam7x256-and-dp83848i/4730 "2007-06-14T20:01:30Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![system](https://d2v6vdsk2p900z.cloudfront.net/original/1X/7fc8fdb729c645aab5b20282bbe34e57cb407be6.jpeg) [@system](https://forums.freertos.org/u/system)\
**Post date:** [June 14, 2007, 8:01pm UTC](https://forums.freertos.org/t/sam7x256-and-dp83848i/4730/1 "2007-06-14T20:01:30Z")

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**[linuxfande](https://sourceforge.net/u/linuxfande/)** wrote on [Thursday, June 14, 2007](https://sourceforge.net/p/freertos/discussion/382005/thread/d31ca481/#3ed7):

Hello,

I´m trying to run the FreeRTOS demo “lwIP\_Demo\_Rowley\_ARM7” build with gcc on a selfmade board.  
It’s based on the ATMEL AT91SAM7X-EK schematic.  
The FreeRTOS is basically ok. The LEDs are blinking and  
I can communicate with the USB Port.  
Further I use the Phy (DP83848I) in state of the original PHY which  
use the developer of FreeRTOS.  
Now I can communicate with the Phy over the MDIO-Interface.  
Link is stable up and running. We get Links to the ethernet with  
100 and 10 MBit.  
But I don’t get an receive Interrupt on the EMAC.  
The data (Rx0-3,Rxdv,Rxclk) from the Phy are on the Pins at the AT91SAM7X256  
are measuered with an oscilloscop.

The pinning between the ARM and the PHY looks like this:  
ARM&nbsp; PHY

PB2&nbsp; TX0  
PB3&nbsp; TX1  
PB10 TX2  
PB11 TX3&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;  
PB1&nbsp; TX\_EN  
PB0&nbsp; TX\_CLK

PB5&nbsp; RX0  
PB6&nbsp; RX1  
PB13 RX2  
PB14 RX3&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;  
PB15 RX\_DV&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;  
PB7&nbsp; RX\_ER&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;  
PB17 RX\_CLK&nbsp;&nbsp;&nbsp;

PB8&nbsp; MDC&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;  
PB9&nbsp; MDIO&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;  
PB16 COL&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;  
PB4&nbsp; CRS&nbsp;&nbsp;&nbsp;  
PB26 PowerDown&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;  
Best regards,

Michael  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

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<div class="post-metadata">

**Author:** ![system](https://d2v6vdsk2p900z.cloudfront.net/original/1X/7fc8fdb729c645aab5b20282bbe34e57cb407be6.jpeg) [@system](https://forums.freertos.org/u/system)\
**Post date:** [June 15, 2007, 7:45am UTC](https://forums.freertos.org/t/sam7x256-and-dp83848i/4730/2 "2007-06-15T07:45:39Z")

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**[davedoors](https://sourceforge.net/u/davedoors/)** wrote on [Friday, June 15, 2007](https://sourceforge.net/p/freertos/discussion/382005/thread/d31ca481/#3ed7/53d3):

This is a bit processor specific rather than FreeRTOS specific.&nbsp; I would suggest posting the same message on the SAM7 Yahoo group.&nbsp; You might get a more expert reply.

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<div class="post-metadata">

**Author:** ![system](https://d2v6vdsk2p900z.cloudfront.net/original/1X/7fc8fdb729c645aab5b20282bbe34e57cb407be6.jpeg) [@system](https://forums.freertos.org/u/system)\
**Post date:** [June 16, 2007, 3:14pm UTC](https://forums.freertos.org/t/sam7x256-and-dp83848i/4730/3 "2007-06-16T15:14:17Z")

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**[linuxfande](https://sourceforge.net/u/linuxfande/)** wrote on [Saturday, June 16, 2007](https://sourceforge.net/p/freertos/discussion/382005/thread/d31ca481/#3ed7/c46c):

Thanks for the hint, I will try this.

Best regards,

Michael