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DP83TG720EVM-MC: DP83TG720 register access for test modes

Part Number: DP83TG720EVM-MC

Hi there,

I've been trying to enable the test modes for verifying the design with the Tektronix automotive ethernet test solution: https://download.tek.com/datasheet/TekExpress-Automotive-Ethernet-1000BASE-T1-100BASE-T1-MSO6-Datasheet-61W614083.pdf?_gl=1*yzq23h*_gcl_aw*R0NMLjE3NjIyOTcxMzIuQ2owS0NRaUE1YWJJQmhDYUFSSXNBTTMtekZVNmIyZ2JiNmtXNDdWckM0RkdjMmJ3aHc1RjlhRTdjM1E1Y1FYeHFzQWdmN09mV3ZKR0Uxd2FBcUpIRUFMd193Y0I.*_gcl_au*MjEyNDg0NzM0LjE3Njc3MzIyNTguMTEyMjY2NjE4Ny4xNzY3NzM0MzU1LjE3Njc3MzQzNTQ.*_ga*NTI2NzE1NjE2LjE3NTkzNzg4OTQ.*_ga_1HMYS1JH9M*czE3Njg2MDI4NTYkbzIwJGcwJHQxNzY4NjAyODU3JGo1OSRsMCRoMA..

Using the DP83TG720 EVM to start, it seems when I use the USB-MDIO tool that writing to this test mode register (TEST_MODE_CONTROL register at offset 1904h) and reading it back results in the register still reading as 0000h.

Any idea why that is?

  • Hi Alex,

    This is likely because 0x1904 is an extended register and requires indirect access. An example read/write with extended registers can be found in Section 6.4.9.2 of the DP83TG720 data sheet. For example, the sequence to initiate Test Mode 1 on the device will be as follows:

    begin

    000D 0001
    000E 0904
    000D 4001
    000E 2000

    end

    Best regards,

    Greg

  • Thanks Gregory, that worked.

    Not sure if this should be a new forum post, but I'm having trouble getting past the transmitter timing slave jitter test (test mode 1).

    Are there extra steps required setting the DP83TG720 in slave mode then enabling test mode 1?

    The Tek scope just says 'Configured channel source has no signal.'

    It gets through transmitter timing master jitter just fine.

  • Hi Alex,

    Is the device currently configured to master or slave mode? You can configure this either through bootstrapping or register writes. Using register writes, this is configured in reg 0x1834, as seen below.

    Best regards,

    Greg

  • Hi Gregory,

    I think I'm setting it as slave correctly:

    // DP83TG720 PHY address is 0x08
    
    begin
    
    // Set PMA_PMD_CONTROL Register (Offset = 1834h) [Reset = 8001h]
    // Requires indirect addressing: (sec 6.4.9.2 of datasheet)
    // https://e2e.ti.com/support/interface-group/interface/f/interface-forum/1608641/dp83tg720evm-mc-dp83tg720-register-access-for-test-modes
    000D 0001
    000E 0834
    000D 4001
    000E 0000
    
    // Read back
    000D 0001
    000E 0834
    000D 4001
    000E
    
    end

    When I set it to master, I see a signal with test mode 1. It just goes away in slave mode.

  • Hi Alex,

    Could you please share a register dump of the device after the write to set it to slave?

    Best regards,

    Greg

  • Hi Greg,

    Attached is the register dump after I set it to slave and set it to test mode 1.

    dp83_registerdump.txt file is open...
    Register 0000 is: 0140
    Register 0001 is: 0141
    
    Register 0002 is: 2000
    Register 0003 is: a284
    Register 000D is: 4001
    Register 000E is: 2000
    Register 0010 is: 0084
    Register 0011 is: 000b
    Register 0012 is: 4000
    Register 0013 is: 0000
    Register 0016 is: 0100
    Register 0018 is: 0808
    Register 0019 is: 0008
    Register 001E is: 0000
    Register 001F is: 0000
    Register 000D is: 001f
    Register 000E is: 0180
    Register 000D is: 4001
    Register 000E is: 0000
    Register 000D is: 001f
    Register 000E is: 018b
    Register 000D is: 4001
    Register 000E is: 0000
    Register 000D is: 001f
    Register 000E is: 018c
    Register 000D is: 4001
    Register 000E is: 0000
    Register 000D is: 0001
    Register 000E is: 108e
    Register 000D is: 4001
    Register 000E is: 0000
    Register 000D is: 001f
    Register 000E is: 030f
    Register 000D is: 4001
    Register 000E is: 0000
    Register 000D is: 001f
    Register 000E is: 0405
    Register 000D is: 4001
    Register 000E is: 0000
    Register 000D is: 001f
    Register 000E is: 041e
    Register 000D is: 4001
    Register 000E is: 0000
    Register 000D is: 001f
    Register 000E is: 0428
    Register 000D is: 4001
    Register 000E is: 0000
    Register 000D is: 001f
    Register 000E is: 0429
    Register 000D is: 4001
    Register 000E is: 0000
    Register 000D is: 001f
    Register 000E is: 042c
    Register 000D is: 4001
    Register 000E is: 0000
    Register 000D is: 001f
    Register 000E is: 042f
    Register 000D is: 4001
    Register 000E is: 0000
    Register 000D is: 001f
    Register 000E is: 0430
    Register 000D is: 4001
    Register 000E is: 0000
    Register 000D is: 001f
    Register 000E is: 0442
    Register 000D is: 4001
    Register 000E is: 0000
    Register 000D is: 001f
    Register 000E is: 0450
    Register 000D is: 4001
    Register 000E is: 0000
    Register 000D is: 001f
    Register 000E is: 0451
    Register 000D is: 4001
    Register 000E is: 0000
    Register 000D is: 001f
    Register 000E is: 0452
    Register 000D is: 4001
    Register 000E is: 0000
    Register 000D is: 001f
    Register 000E is: 0453
    Register 000D is: 4001
    Register 000E is: 0000
    Register 000D is: 001f
    Register 000E is: 0456
    Register 000D is: 4001
    Register 000E is: 0000
    Register 000D is: 001f
    Register 000E is: 045d
    Register 000D is: 4001
    Register 000E is: 0000
    Register 000D is: 001f
    Register 000E is: 045e
    Register 000D is: 4001
    Register 000E is: 0000
    Register 000D is: 001f
    Register 000E is: 0468
    Register 000D is: 4001
    Register 000E is: 0000
    Register 000D is: 001f
    Register 000E is: 046a
    Register 000D is: 4001
    Register 000E is: 0000
    Register 000D is: 001f
    Register 000E is: 047b
    Register 000D is: 4001
    Register 000E is: 0000
    Register 000D is: 001f
    Register 000E is: 0510
    Register 000D is: 4001
    Register 000E is: 0000
    Register 000D is: 001f
    Register 000E is: 052b
    Register 000D is: 4001
    Register 000E is: 0000
    Register 000D is: 001f
    Register 000E is: 0543
    Register 000D is: 4001
    Register 000E is: 0000
    Register 000D is: 001f
    Register 000E is: 0544
    Register 000D is: 4001
    Register 000E is: 0000
    Register 000D is: 001f
    Register 000E is: 0545
    Register 000D is: 4001
    Register 000E is: 0000
    Register 000D is: 001f
    Register 000E is: 0547
    Register 000D is: 4001
    Register 000E is: 0000
    Register 000D is: 001f
    Register 000E is: 0548
    Register 000D is: 4001
    Register 000E is: 0000
    Register 000D is: 001f
    Register 000E is: 0552
    Register 000D is: 4001
    Register 000E is: 0000
    Register 000D is: 001f
    Register 000E is: 0553
    Register 000D is: 4001
    Register 000E is: 0000
    Register 000D is: 001f
    Register 000E is: 0600
    Register 000D is: 4001
    Register 000E is: 0000
    Register 000D is: 001f
    Register 000E is: 0601
    Register 000D is: 4001
    Register 000E is: 0000
    Register 000D is: 001f
    Register 000E is: 0602
    Register 000D is: 4001
    Register 000E is: 0000
    Register 000D is: 001f
    Register 000E is: 0608
    Register 000D is: 4001
    Register 000E is: 0000
    Register 000D is: 001f
    Register 000E is: 060a
    Register 000D is: 4001
    Register 000E is: 0000
    Register 000D is: 001f
    Register 000E is: 060c
    Register 000D is: 4001
    Register 000E is: 0000
    Register 000D is: 001f
    Register 000E is: 060d
    Register 000D is: 4001
    Register 000E is: 0000
    Register 000D is: 001f
    Register 000E is: 0618
    Register 000D is: 4001
    Register 000E is: 0000
    Register 000D is: 001f
    Register 000E is: 0619
    Register 000D is: 4001
    Register 000E is: 0000
    Register 000D is: 001f
    Register 000E is: 061a
    Register 000D is: 4001
    Register 000E is: 0000
    Register 000D is: 001f
    Register 000E is: 061b
    Register 000D is: 4001
    Register 000E is: 0000
    Register 000D is: 001f
    Register 000E is: 061c
    Register 000D is: 4001
    Register 000E is: 0000
    Register 000D is: 001f
    Register 000E is: 061d
    Register 000D is: 4001
    Register 000E is: 0000
    Register 000D is: 001f
    Register 000E is: 061e
    Register 000D is: 4001
    Register 000E is: 0000
    Register 000D is: 001f
    Register 000E is: 0620
    Register 000D is: 4001
    Register 000E is: 0000
    Register 000D is: 001f
    Register 000E is: 0622
    Register 000D is: 4001
    Register 000E is: 0000
    Register 000D is: 001f
    Register 000E is: 0623
    Register 000D is: 4001
    Register 000E is: 0000
    Register 000D is: 001f
    Register 000E is: 0624
    Register 000D is: 4001
    Register 000E is: 0000
    Register 000D is: 001f
    Register 000E is: 0625
    Register 000D is: 4001
    Register 000E is: 0000
    Register 000D is: 001f
    Register 000E is: 0626
    Register 000D is: 4001
    Register 000E is: 0000
    Register 000D is: 001f
    Register 000E is: 0627
    Register 000D is: 4001
    Register 000E is: 0000
    Register 000D is: 001f
    Register 000E is: 0628
    Register 000D is: 4001
    Register 000E is: 0000
    Register 000D is: 001f
    Register 000E is: 0629
    Register 000D is: 4001
    Register 000E is: 0000
    Register 000D is: 001f
    Register 000E is: 062a
    Register 000D is: 4001
    Register 000E is: 0000
    Register 000D is: 001f
    Register 000E is: 0638
    Register 000D is: 4001
    Register 000E is: 0000
    Register 000D is: 001f
    Register 000E is: 0639
    Register 000D is: 4001
    Register 000E is: 0000
    Register 000D is: 001f
    Register 000E is: 063a
    Register 000D is: 4001
    Register 000E is: 0000
    Register 000D is: 001f
    Register 000E is: 063b
    Register 000D is: 4001
    Register 000E is: 0000
    Register 000D is: 001f
    Register 000E is: 063c
    Register 000D is: 4001
    Register 000E is: 0000
    Register 000D is: 001f
    Register 000E is: 063d
    Register 000D is: 4001
    Register 000E is: 0000
    Register 000D is: 001f
    Register 000E is: 063e
    Register 000D is: 4001
    Register 000E is: 0000
    Register 000D is: 001f
    Register 000E is: 0871
    Register 000D is: 4001
    Register 000E is: 0000
    Register 000D is: 001f
    Register 000E is: 0874
    Register 000D is: 4001
    Register 000E is: 0000
    Register 000D is: 001f
    Register 000E is: 0875
    Register 000D is: 4001
    Register 000E is: 0000
    Register 000D is: 0001
    Register 000E is: 1000
    Register 000D is: 4001
    Register 000E is: 0000
    Register 000D is: 0001
    Register 000E is: 1007
    Register 000D is: 4001
    Register 000E is: 003d
    Register 000D is: 0001
    Register 000E is: 1009
    Register 000D is: 4001
    Register 000E is: 0000
    Register 000D is: 0001
    Register 000E is: 100b
    Register 000D is: 4001
    Register 000E is: 0800
    Register 000D is: 0001
    Register 000E is: 1012
    Register 000D is: 4001
    Register 000E is: 0002
    Register 000D is: 0001
    Register 000E is: 1834
    Register 000D is: 4001
    Register 000E is: 8000
    Register 000D is: 0001
    Register 000E is: 1900
    Register 000D is: 4001
    Register 000E is: 0000
    Register 000D is: 0001
    Register 000E is: 1901
    Register 000D is: 4001
    Register 000E is: 0904
    Register 000D is: 0001
    Register 000E is: 1902
    Register 000D is: 4001
    Register 000E is: 0002
    Register 000D is: 0001
    Register 000E is: 1903
    Register 000D is: 4001
    Register 000E is: 0000
    Register 000D is: 0001
    Register 000E is: 1904
    Register 000D is: 4001
    Register 000E is: 2000
    Register 000D is: 0003
    Register 000E is: 3900
    Register 000D is: 4001
    Register 000E is: 0000
    Register 000D is: 0003
    Register 000E is: 3901
    Register 000D is: 4001
    Register 000E is: 0904
    Register 000D is: 0003
    Register 000E is: 3902
    Register 000D is: 4001
    Register 000E is: 0002
    Register 000D is: 0003
    Register 000E is: 3904
    Register 000D is: 4001
    Register 000E is: 2000
    Register 000D is: 0003
    Register 000E is: 3905
    Register 000D is: 4001
    Register 000E is: 0000
    Register 000D is: 0003
    Register 000E is: 3906
    Register 000D is: 4001
    Register 000E is: 0000
    Register 000D is: 0003
    Register 000E is: 3907
    Register 000D is: 4001
    Register 000E is: 0000
    Register 000D is: 0003
    Register 000E is: 3908
    Register 000D is: 4001
    Register 000E is: 0000
    Register 000D is: 0003
    Register 000E is: 3909
    Register 000D is: 4001
    Register 000E is: 0000
    Register 000D is: 0003
    Register 000E is: 390a
    Register 000D is: 4001
    Register 000E is: 0000
    Register 000D is: 0003
    Register 000E is: 390b
    Register 000D is: 4001
    Register 000E is: 0000
    Register 000D is: 0003
    Register 000E is: 390c
    Register 000D is: 4001
    Register 000E is: 0000
    Register 000D is: 0003
    Register 000E is: 390d
    Register 000D is: 4001
    Register 000E is: 0000
    Register 000D is: 0007
    Register 000E is: 7200
    Register 000D is: 4001
    Register 000E is: 0000
    End of file.
    
    

    If helpful, I also attached my scripts for setting master, slave, test mode 1, and reading the registers.

    // DP83TG720 PHY address is 0x08
    
    begin
    
    // Set PMA_PMD_CONTROL Register (Offset = 1834h) [Reset = 8001h]
    // Requires indirect addressing: (sec 6.4.9.2 of datasheet)
    // https://e2e.ti.com/support/interface-group/interface/f/interface-forum/1608641/dp83tg720evm-mc-dp83tg720-register-access-for-test-modes
    000D 0001
    000E 0834
    000D 4001
    000E 4000
    
    // Read back
    000D 0001
    000E 0834
    000D 4001
    000E
    
    end

    // DP83TG720 PHY address is 0x08
    
    begin
    
    // Set PMA_PMD_CONTROL Register (Offset = 1834h) [Reset = 8001h]
    // Requires indirect addressing: (sec 6.4.9.2 of datasheet)
    // https://e2e.ti.com/support/interface-group/interface/f/interface-forum/1608641/dp83tg720evm-mc-dp83tg720-register-access-for-test-modes
    000D 0001
    000E 0834
    000D 4001
    000E 0000
    
    // Read back
    000D 0001
    000E 0834
    000D 4001
    000E
    
    end

    // DP83TG720 PHY address is 0x08
    
    begin
    
    // Set TEST_MODE_CONTROL to Test Mode 1 (Offset = 1904h) [Reset = 0000h]
    // Requires indirect addressing: (sec 6.4.9.2 of datasheet)
    // https://e2e.ti.com/support/interface-group/interface/f/interface-forum/1608641/dp83tg720evm-mc-dp83tg720-register-access-for-test-modes
    000D 0001
    000E 0904
    000D 4001
    000E 2000
    
    // Read back
    1904
    
    end

    // DP83TG720 PHY address is 0x08
    
    begin
    
    0000
    0001
    0002
    0003
    000D
    000E
    0010
    0011
    0012
    0013
    0016
    0018
    0019
    001E
    001F
    
    // Read with indirect addressing
    000D 001F
    // Address to change
    000E 0180
    000D 4001
    000E
    
    // Read with indirect addressing
    000D 001F
    // Address to change
    000E 018B
    000D 4001
    000E
    
    // Read with indirect addressing
    000D 001F
    // Address to change
    000E 018C
    000D 4001
    000E
    
    // Read with indirect addressing
    000D 0001
    // Address to change
    000E 108E
    000D 4001
    000E
    
    // Read with indirect addressing
    000D 001F
    // Address to change
    000E 030F
    000D 4001
    000E
    
    // Read with indirect addressing
    000D 001F
    // Address to change
    000E 0405
    000D 4001
    000E
    
    // Read with indirect addressing
    000D 001F
    // Address to change
    000E 041E
    000D 4001
    000E
    
    // Read with indirect addressing
    000D 001F
    // Address to change
    000E 0428
    000D 4001
    000E
    
    // Read with indirect addressing
    000D 001F
    // Address to change
    000E 0429
    000D 4001
    000E
    
    // Read with indirect addressing
    000D 001F
    // Address to change
    000E 042C
    000D 4001
    000E
    
    // Read with indirect addressing
    000D 001F
    // Address to change
    000E 042F
    000D 4001
    000E
    
    // Read with indirect addressing
    000D 001F
    // Address to change
    000E 0430
    000D 4001
    000E
    
    // Read with indirect addressing
    000D 001F
    // Address to change
    000E 0442
    000D 4001
    000E
    
    // Read with indirect addressing
    000D 001F
    // Address to change
    000E 0450
    000D 4001
    000E
    
    // Read with indirect addressing
    000D 001F
    // Address to change
    000E 0451
    000D 4001
    000E
    
    // Read with indirect addressing
    000D 001F
    // Address to change
    000E 0452
    000D 4001
    000E
    
    // Read with indirect addressing
    000D 001F
    // Address to change
    000E 0453
    000D 4001
    000E
    
    // Read with indirect addressing
    000D 001F
    // Address to change
    000E 0456
    000D 4001
    000E
    
    // Read with indirect addressing
    000D 001F
    // Address to change
    000E 045D
    000D 4001
    000E
    
    // Read with indirect addressing
    000D 001F
    // Address to change
    000E 045E
    000D 4001
    000E
    
    // Read with indirect addressing
    000D 001F
    // Address to change
    000E 0468
    000D 4001
    000E
    
    // Read with indirect addressing
    000D 001F
    // Address to change
    000E 046A
    000D 4001
    000E
    
    // Read with indirect addressing
    000D 001F
    // Address to change
    000E 047B
    000D 4001
    000E
    
    // Read with indirect addressing
    000D 001F
    // Address to change
    000E 0510
    000D 4001
    000E
    
    // Read with indirect addressing
    000D 001F
    // Address to change
    000E 052B
    000D 4001
    000E
    
    // Read with indirect addressing
    000D 001F
    // Address to change
    000E 0543
    000D 4001
    000E
    
    // Read with indirect addressing
    000D 001F
    // Address to change
    000E 0544
    000D 4001
    000E
    
    // Read with indirect addressing
    000D 001F
    // Address to change
    000E 0545
    000D 4001
    000E
    
    // Read with indirect addressing
    000D 001F
    // Address to change
    000E 0547
    000D 4001
    000E
    
    // Read with indirect addressing
    000D 001F
    // Address to change
    000E 0548
    000D 4001
    000E
    
    // Read with indirect addressing
    000D 001F
    // Address to change
    000E 0552
    000D 4001
    000E
    
    // Read with indirect addressing
    000D 001F
    // Address to change
    000E 0553
    000D 4001
    000E
    
    // Read with indirect addressing
    000D 001F
    // Address to change
    000E 0600
    000D 4001
    000E
    
    // Read with indirect addressing
    000D 001F
    // Address to change
    000E 0601
    000D 4001
    000E
    
    // Read with indirect addressing
    000D 001F
    // Address to change
    000E 0602
    000D 4001
    000E
    
    // Read with indirect addressing
    000D 001F
    // Address to change
    000E 0608
    000D 4001
    000E
    
    // Read with indirect addressing
    000D 001F
    // Address to change
    000E 060A
    000D 4001
    000E
    
    // Read with indirect addressing
    000D 001F
    // Address to change
    000E 060C
    000D 4001
    000E
    
    // Read with indirect addressing
    000D 001F
    // Address to change
    000E 060D
    000D 4001
    000E
    
    // Read with indirect addressing
    000D 001F
    // Address to change
    000E 0618
    000D 4001
    000E
    
    // Read with indirect addressing
    000D 001F
    // Address to change
    000E 0619
    000D 4001
    000E
    
    // Read with indirect addressing
    000D 001F
    // Address to change
    000E 061A
    000D 4001
    000E
    
    // Read with indirect addressing
    000D 001F
    // Address to change
    000E 061B
    000D 4001
    000E
    
    // Read with indirect addressing
    000D 001F
    // Address to change
    000E 061C
    000D 4001
    000E
    
    // Read with indirect addressing
    000D 001F
    // Address to change
    000E 061D
    000D 4001
    000E
    
    // Read with indirect addressing
    000D 001F
    // Address to change
    000E 061E
    000D 4001
    000E
    
    // Read with indirect addressing
    000D 001F
    // Address to change
    000E 0620
    000D 4001
    000E
    
    // Read with indirect addressing
    000D 001F
    // Address to change
    000E 0622
    000D 4001
    000E
    
    // Read with indirect addressing
    000D 001F
    // Address to change
    000E 0623
    000D 4001
    000E
    
    // Read with indirect addressing
    000D 001F
    // Address to change
    000E 0624
    000D 4001
    000E
    
    // Read with indirect addressing
    000D 001F
    // Address to change
    000E 0625
    000D 4001
    000E
    
    // Read with indirect addressing
    000D 001F
    // Address to change
    000E 0626
    000D 4001
    000E
    
    // Read with indirect addressing
    000D 001F
    // Address to change
    000E 0627
    000D 4001
    000E
    
    // Read with indirect addressing
    000D 001F
    // Address to change
    000E 0628
    000D 4001
    000E
    
    // Read with indirect addressing
    000D 001F
    // Address to change
    000E 0629
    000D 4001
    000E
    
    // Read with indirect addressing
    000D 001F
    // Address to change
    000E 062A
    000D 4001
    000E
    
    // Read with indirect addressing
    000D 001F
    // Address to change
    000E 0638
    000D 4001
    000E
    
    // Read with indirect addressing
    000D 001F
    // Address to change
    000E 0639
    000D 4001
    000E
    
    // Read with indirect addressing
    000D 001F
    // Address to change
    000E 063A
    000D 4001
    000E
    
    // Read with indirect addressing
    000D 001F
    // Address to change
    000E 063B
    000D 4001
    000E
    
    // Read with indirect addressing
    000D 001F
    // Address to change
    000E 063C
    000D 4001
    000E
    
    // Read with indirect addressing
    000D 001F
    // Address to change
    000E 063D
    000D 4001
    000E
    
    // Read with indirect addressing
    000D 001F
    // Address to change
    000E 063E
    000D 4001
    000E
    
    // Read with indirect addressing
    000D 001F
    // Address to change
    000E 0871
    000D 4001
    000E
    
    // Read with indirect addressing
    000D 001F
    // Address to change
    000E 0874
    000D 4001
    000E
    
    // Read with indirect addressing
    000D 001F
    // Address to change
    000E 0875
    000D 4001
    000E
    
    // Read with indirect addressing
    000D 0001
    // Address to change
    000E 1000
    000D 4001
    000E
    
    // Read with indirect addressing
    000D 0001
    // Address to change
    000E 1007
    000D 4001
    000E
    
    // Read with indirect addressing
    000D 0001
    // Address to change
    000E 1009
    000D 4001
    000E
    
    // Read with indirect addressing
    000D 0001
    // Address to change
    000E 100B
    000D 4001
    000E
    
    // Read with indirect addressing
    000D 0001
    // Address to change
    000E 1012
    000D 4001
    000E
    
    // Read with indirect addressing
    000D 0001
    // Address to change
    000E 1834
    000D 4001
    000E
    
    // Read with indirect addressing
    000D 0001
    // Address to change
    000E 1900
    000D 4001
    000E
    
    // Read with indirect addressing
    000D 0001
    // Address to change
    000E 1901
    000D 4001
    000E
    
    // Read with indirect addressing
    000D 0001
    // Address to change
    000E 1902
    000D 4001
    000E
    
    // Read with indirect addressing
    000D 0001
    // Address to change
    000E 1903
    000D 4001
    000E
    
    // Read with indirect addressing
    000D 0001
    // Address to change
    000E 1904
    000D 4001
    000E
    
    // Read with indirect addressing
    000D 0003
    // Address to change
    000E 3900
    000D 4001
    000E
    
    // Read with indirect addressing
    000D 0003
    // Address to change
    000E 3901
    000D 4001
    000E
    
    // Read with indirect addressing
    000D 0003
    // Address to change
    000E 3902
    000D 4001
    000E
    
    // Read with indirect addressing
    000D 0003
    // Address to change
    000E 3904
    000D 4001
    000E
    
    // Read with indirect addressing
    000D 0003
    // Address to change
    000E 3905
    000D 4001
    000E
    
    // Read with indirect addressing
    000D 0003
    // Address to change
    000E 3906
    000D 4001
    000E
    
    // Read with indirect addressing
    000D 0003
    // Address to change
    000E 3907
    000D 4001
    000E
    
    // Read with indirect addressing
    000D 0003
    // Address to change
    000E 3908
    000D 4001
    000E
    
    // Read with indirect addressing
    000D 0003
    // Address to change
    000E 3909
    000D 4001
    000E
    
    // Read with indirect addressing
    000D 0003
    // Address to change
    000E 390A
    000D 4001
    000E
    
    // Read with indirect addressing
    000D 0003
    // Address to change
    000E 390B
    000D 4001
    000E
    
    // Read with indirect addressing
    000D 0003
    // Address to change
    000E 390C
    000D 4001
    000E
    
    // Read with indirect addressing
    000D 0003
    // Address to change
    000E 390D
    000D 4001
    000E
    
    // Read with indirect addressing
    000D 0007
    // Address to change
    000E 7200
    000D 4001
    000E
    
    
    end

  • Apologies Greg,

    I was not setting up the master/slave transmitter timing jitter tests correctly. I had misread the Tek manual and thought the test could be done without TX_TCLK access.

    After re-running with TX_TCLK SMA connector connected to a diff probe on the TF-XGbT test fixture, I get transmitter slave timing jitter passing now.

    Master timing jitter and MDI jitter fail, but there are other factors I want to rule out later in the week. (Grounding and this GND pigtail I used to pass CLK_OUT to a diff probe.

    Thanks for your help!

    wired-t1-test.pdf

  • Hi Alex,

    Thank you for the update. Please let me know if you continue to have these issues with passing testing.

    Best regards,

    Greg