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ADV212 in normal host encode mode flooding with zeros

Question asked by Flavien on Aug 23, 2010
Latest reply on Sep 7, 2010 by Flavien

Dear Alls,

 

I am working on a network framegrabber, the board is connected like on figure 5 page 21 of user_guide (rev1.1)

the CPU is implementing figure 10 page 14 of programming_guide (rev2.0)

 

EIRQIE is set to 0x0402 (SWIRQ[0] and EIRQFLG[1])

 

EIRQFLG[3] , EIRQFLG[2] and EIRQFLG[0] stays at '1' even if I clear them.

The received datastream contains large amount of zeros around the datas.

 

For example, I captured :

0x00000000     00000000 00000000 00000000 00000000

---            00000000 00000000 00000000 00000000

0x00028800     FFFFFFF1 00000012 72010002 0000FBF4

0x00028810     0000000C ......

---                    [picture that is OK]

0x0002DB20     xxxxxxxx xxxxxxxx xxxxxxFF D9000000

0x0002DB30     00000000 00000000 00000000 00000000

---            00000000 00000000 00000000 00000000

0x000673E0     FFFFFFF0 00000013 72010002 0000FBF4

---                    [picture that is OK]

0x0006C710     xxxxxxxx 0000FFD9 00000000 00000000

---                 [and this goes on like that]

 

(source was a BT656 PAL pattern generator, ADV is configured for CBR (20480 byte / field),

 

Did someone experienced receiving zeros like that ?

 

Thanks in advance,

 

Flavien

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