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DP83TC811R-Q1: delay time during data receiving varies

Part Number: DP83TC811R-Q1

Hi Expert,

Our customer use DP83TC811RWRNDRQ1 in a Unmanned delivery vehicle. Now they find the Ethernet  delay time during data receiving varies. They set it as 1ms but actual delay time could be as high as 700ms. The attachment is the register settings. Could you please help to check if there is any problem on reg config. The core starting up log is also attached for your reference.

Also, could you please provide some hints on debugging? what is he wrong delay time related to? 

Thanks a lot. 

[   13.902665] ==================== TI DP83TC811 ===================== 
[   13.903875] 0x0000:  2100
[   13.904367] 0x0001:  0061
[   13.904885] 0x0002:  2000
[   13.905377] 0x0003:  a253
[   13.906137] 0x0009:  2000
[   13.906630] 0x0011:  010b
[   13.907187] 0x0012:  4000
[   13.907678] 0x0013:  4200
[   13.908126] 0x0014:  0000
[   13.908673] 0x0015:  0000
[   13.909184] 0x0016:  0100
[   13.910106] 0x0017:  4241
[   13.911021] 0x0018:  1010
[   13.912052] 0x001b:  007d
[   13.912630] 0x001c:  05ee
[   13.913458] 0x001e:  0000
[   13.914007] 0x001f:  0000
[   13.914448] ------------------------------------------------------- 
[   13.921796] 0x0133:  05e0
[   13.923168] 0x016b:  0000
[   13.925121] 0x0180:  0000
[   13.925944] 0x0181:  0000
[   13.927806] 0x018a:  0000
[   13.928715] 0x018b:  005a
[   13.931139] 0x018c:  0000
[   13.932086] 0x0197:  0058
[   13.932906] 0x0198:  0000
[   13.933717] 0x0400:  1000
[   13.934622] 0x0401:  000a
[   13.935436] 0x0446:  0077
[   13.937816] 0x0448:  0000
[   13.938784] 0x0460:  2610
[   13.939766] 0x0461:  0410
[   13.940616] 0x0462:  0000
[   13.941535] 0x0463:  0001
[   13.943916] 0x0467:  f00c
[   13.945784] 0x0469:  0004
[   13.947267] 0x0475:  0000
[   13.948119] 0x0480:  0002
[   13.948963] 0x0481:  00a2
[   13.949820] 0x0482:  7007
[   13.950662] 0x0483:  0003
[   13.951539] 0x0484:  1220
[   13.952383] 0x0485:  1078
[   13.953226] 0x0486:  0a05
[   13.954077] 0x0487:  0a00
[   13.955180] 0x0489:  0001
[   13.956034] 0x0493:  0014
[   13.956875] 0x0496:  044c
[   13.957922] 0x0497:  01c0
[   13.958800] 0x04a0:  00a1
[   13.959648] 0x04a1:  0000
[   13.960490] 0x04a2:  0000
[   13.961331] 0x04a3:  0000
[   13.962175] 0x04a4:  0000
[   13.963457] 0x04a5:  0000
[   13.964310] 0x04a6:  0000
[   13.965150] 0x04a7:  0000
[   13.965986] 0x04a8:  0000
[   13.966914] 0x04a9:  0000
[   13.968668] 0x04aa:  0000
[   13.969515] 0x04ab:  0000
[   13.970352] 0x04ac:  0000
[   13.971292] 0x04ad:  0000
[   13.972145] 0x04ae:  0000
[   13.972983] 0x04af:  0000
[   13.973875] 0x04b0:  0000
[   13.974781] 0x04b1:  0000
[   13.975735] 0x04b2:  0000
[   13.976559] 0x04b3:  0000
[   13.977378] 0x04b4:  0000
[   13.978294] 0x04b5:  0000
[   13.979262] 0x04b6:  0000
[   13.980089] 0x04b7:  0000
[   13.980929] 0x04b8:  0000
[   13.981751] 0x04b9:  0000
[   13.982697] 0x04ba:  0000
[   13.984318] 0x04bb:  0000
[   13.985210] 0x04bc:  0000
[   13.986582] 0x04bd:  0000
[   13.987457] 0x04be:  0000
[   13.988341] 0x04bf:  0000
[   13.989265] 0x04c0:  0000
[   13.990103] 0x04c1:  0000
[   13.990894] 0x04c2:  0000
[   13.991715] 0x04c3:  0000
[   13.993038] 0x04c4:  0000
[   13.994909] 0x04c5:  0000
[   13.995763] 0x04c6:  0000
[   13.996592] 0x04c7:  0000
[   13.998478] 0x04c8:  0000
[   13.999366] 0x04c9:  0000
[   14.000231] 0x04ca:  0000
[   14.001072] 0x04cb:  0000
[   14.001901] 0x04cc:  000c
[   14.002790] 0x04e0:  0000
[   14.003682] 0x04e5:  00c3
[   14.004507] 0x0007:  2001
[   14.005330] 0x000b:  1000
[   14.006159] 0x0012:  4000
[   14.007215] 0x0834:  c000
[   14.008116] 0x0836:  0000
[   14.008534] ======================================================= 

Core Starting up Log.txt

Thanks a lot!

BR,

Elec Cheng