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DS110DF111: Unable to get Reg_0x54[7]

Paddy Liu
Prodigy 20 points
Part Number: DS110DF111
Other Parts Discussed in Thread: DS100DF410, , DS110DF410, DS125DF410, DS125DF111

Hello

I can use SMBus read register.

I refer to "DS110DF111, DS125DF111, DS100DF410, DS110DF410,and DS125DF410 Programming Guide"

2.4.1 Front-Port Ingress (Module-to-Host)
2.4.2 Front-Port Egress (Host-to-Module)
2.4.3 Backplane and Cable
Table 20. Set Data Rate(DS125DF410 as example)

and use 10G,SFP device connection

but I tried several ways, Reg_0x54[7] always 0

can you help me, how to setting register,

the following is channel register status.

Hex   0  1  2  3  4  5  6  7  8  9  A  B  C  D  E  F
00 | 00 00 00 00 00 00 00 00 00 00 10 0F 08 00 93 69
10 | 3A 20 A0 90 00 10 7A 25 40 23 00 03 24 00 E1 55
20 | 00 00 00 40 40 00 00 00 00 00 30 00 72 80 00 06
30 | 00 40 11 88 3F 1F 33 00 00 00 A5 00 00 00 80 00
40 | 00 40 80 50 C0 90 54 A0 B0 95 69 D5 99 A5 E6 F9
50 | 00 00 A5 00 00 00 00 00 B0 95 ED D5 99 A5 E6 F9
60 | 00 00 00 00 00 00 00 00 00 0A 44 40 00 00 00 00
70 | 03 20 00 00 00 00

Control and Shared Register

Hex   0  1  2  3  4  5  6  7  8  9  A  B  C  D  E  F
00 | 00 60 -- -- 01 00 00 04 -- -- -- -- -- -- -- 00

  • TI__Mastermind 23725 points

    Hi,

    Sorry if these are basic questions, but can you confirm the following?

    1. Is there a valid signal on the RX pins?
    2. Have you checked both channel register sets?
    3. Is there a valid reference clock signal on the REFCLK_IN pin?

    Typically we expect register 0x54[7] will be 1 when there is any signal on the channel input, regardless of data rate configuration.

    Best,

    Lucas

  • in reply to Lucas Wolter
    Prodigy 20 points

    Yes ,We check again about H/W design.

    Found some design deficiencies.

    Anyway, now 0x54[7] can check the signal.

    thank you!!

    and next step, I need to set the speed to support 1G SFP, and try Loop back function.

    If I find other problems, please help me again.thank!!

  • in reply to Paddy Liu
    TI__Mastermind 23725 points

    Hi Paddy,

    Great, I'm glad you were able to resolve the issue. I'll be closing this thread, if any new issues come up don't hesitate to open a new E2E thread.

    Best,

    Lucas