• State
  • Locked Locked
  • Replies 3 replies
  • Subscribers 33 subscribers
  • Views 285 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

DP83869HM: DP83869HM

Derryl Tauro
Prodigy 20 points
Part Number: DP83869HM
Other Parts Discussed in Thread: DP83869

Hi,

We are using DP83869 chip in RGMII-SGMII mode. Block diagram is attached for your reference. RGMII is connected to MAC of XILINX MPSoC PS and the SGMII
interface goes via backplane to the ethernet switch (BCM53312). We are not able to achieve the communication from the board to LP.

Following experiments were carried out.
1. On writing REG(0xC00) = 0x0140 the link status is detected. On trying to ping, we could observe the packets reaching at the LP (using wireshark).
On further assessing at the switch, we could see that the packets were arriving at the SW from LP but wasn't reaching the Xilinx MPSoC MAC. Are we missing anything to be configured at 1000BaseFX side?
2. We have followed the register dumps mentioned in the link https://e2e.ti.com/support/interface-group/interface/f/interface-forum/1080094/dp83869hm-dp83869-in-rgmii-sgmii-mode-does-not-work-at-100m?tisearch=e2e-sitesearch&keymatch=RGMII%2525252520to%2525252520SGMII%2525252520bridge# but couldn't achieve much.
3. We forced 1000Mbps at Xilinx-MAC, TI PHY(Both RGMII and SGMII side), BCM53312 to Copper. There's no luck.

Would you please let us know if anything else can be tried?

  • 0
    TI__Mastermind 25955 points

    Hi Tauro,

    I want to double check if my understanding is correct for a further debug. I am not sure if my understanding is correctly and please correct me if I am wrong:

    • You are able to detect a link up only up to DP83869 board? You are able to detect a link up from link-partner up to DP83869 board right?
    • You are able to detect the packets received in SW but wasn't able to detect any packets to PS?
    • Could you read the register 006E to see rather you are in RGMII-SGMII bridge mode? I wasn't able to open the link you provided so I cannot access your register dump.
    • Did you consider the Align and Shift mode for RGMII? Please refer to register 0x32?

    --

    Regards,
    Hillman Lin

  • 0 in reply to Hillman Lin
    Prodigy 20 points

    Fullscreen 6406.register_dump.txt Download 
    reg=00 data=0140
reg=01 data=794D
reg=02 data=2000
reg=03 data=A0F1
reg=04 data=01E1
reg=05 data=0000
reg=06 data=0064
reg=07 data=2001
reg=08 data=0000
reg=09 data=1300
reg=0a data=0000
reg=0b data=0000
reg=0c data=0000
reg=0d data=801F
reg=0e data=2000
reg=0f data=F000
reg=10 data=5C48
reg=11 data=AF02
reg=12 data=0000
reg=13 data=0440
reg=14 data=29C7
reg=15 data=0000
reg=16 data=0000
reg=17 data=0040
reg=18 data=6150
reg=19 data=4444
reg=1a data=0002
reg=1b data=0000
reg=1c data=0000
reg=1d data=0000
reg=1e data=0012
reg=1f data=0000
reg=0x25 data=0000
reg=0x2C data=141F
reg=0x2D data=0000
reg=0x2E data=0221
reg=0x31 data=10B0
reg=0x32 data=00D0
reg=0x33 data=0000
reg=0x37 data=0001
reg=0x39 data=0000
reg=0x3A data=0000
reg=0x43 data=07A0
reg=0x4F data=0146
reg=0x6E data=0670
reg=0x86 data= 0077
reg=0x134 data=1000
reg=0x135 data=0000
reg=0x170 data=0C0F
reg=0x180 data=0752
reg=0x181 data=C850
reg=0x182 data=5326
reg=0x183 data=A01E
reg=0x184 data=E976
reg=0x185 data=19CF
reg=0x190 data=0000
reg=0x191 data=0000
reg=0x192 data=0000
reg=0x193 data=0000
reg=0x194 data=0000
reg=0x195 data=0000
reg=0x196 data=0000
reg=0x197 data=0000
reg=0x198 data=0000
reg=0x199 data=0000
reg=0x1A4 data=0000
reg=0x1A5 data=0000
reg=0x1A6 data=0000
reg=0x1DF data=0043
reg=0x1E0 data=417A
reg=0xC00 data=0140
reg=0xC01 data=616D
reg=0xC02 data=2000
reg=0xC03 data=A0F1
reg=0xC04 data=0020
reg=0xC05 data=41A0
reg=0xC06 data=0001
reg=0xC07 data=2001
reg=0xC08 data=0000
reg=0xC18 data=0000
reg=0xC19 data=0000

    Hi Hillman,

    I have attached the register dump of TI PHY for your reference.

    For your queries,

    1. We are able to detect link up from board to LP

    2. Yes, we are able to detect the packets received in SW but wasn't able to detect any packets to PS

    3. We tried Align and Shift at RGMII, result is still the same.

    Thanks,

    Derryl

  • 0 in reply to Derryl Tauro
    TI__Mastermind 25955 points

    Hi,

    --

    Regards,

    Hillman Lin