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Queries Regarding XL710-BM1

Aditya_Singh
Beginner
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Hi Intel Team,

 

Posting our queries here as per suggestion from Ethernet Products support team. Below is the link for the case-

Queries Regarding XL710-BM1 

 

While browsing through datasheet of XL710, I found that there is only one package given in section 13.7-

Aditya_Singh_0-1678347394012.png

There are total 8 Serdes lanes are available in XL710 series divided into two groups Group A and Group B. Please refer to table 2-3 into the datasheet.

Aditya_Singh_1-1678347394162.png

 

As per product brief of XL710-BM1, it can support 4 x10GbE SFI modules.

Below are our queries-

1) Which group (group A or group B) will be available into XL710-BM1 variant

2) Is there any difference between package of XL710-BM1 and  XL710-BM2 variant

3) Section 1.1 shows the block diagram for XL710 series-

Aditya_Singh_2-1678347394066.png

 

There are two block diagrams showing below information

a) As per figure 1-5 XL710 series supports: 2x 40G or 4x 10G/1G

b) As per figure 1-7 XL710 series supports: 2x40G or 4x 10G/1G/100M

Which XL710 variant supports option "A" and option "B"

 

Regards,

Aditya

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Diego_INTEL
Moderator
610 Views

Hello @Aditya_Singh

 

Thank you for contacting Intel Embedded Community.

 

The Package Size is 25 x 25 mm, the difference in both SKUs is the port number.

 

You can check the section of the datasheet “3.2.6 Possible port to physical lane configurations for various PHY interfaces”, as for example this function is only for the BM2: “Dual 40 GbE — XL710-AM2 and XL710-BM2 SKUs are supported”

 

The figures, yes, they are confusing, both SKUs should support the 100M too, because the registry is the same for both, as you can see in the section “10.2.2.3 MAC Registers”, but in the end, the connections of the section 3.2.6 and the port numbers (single or dual) of each SKU is what you can check for your design.

 

Best regards,

 

@Diego_INTEL 

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Aditya_Singh
Beginner
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Hi @Diego_INTEL,

 

Thanks for your response.

 

We have below understanding based on "section 3.2.6 Possible port to physical lane configurations for various PHY interfaces”.

 

For Quad Port SFP+ application, we can use Serdes lane combination provided for Cfg. ID 7.0, 7.1 and 7.2 given into table 3-78.

Aditya_Singh_0-1678439918650.png

 

All the Serdes lanes will be available into XL710-BM1 variant. Also, only one MAC port will be available into XL710-BM1 variant.

 

Please let us know otherwise.

 

Regards,

Aditya

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Diego_INTEL
Moderator
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Hello @Aditya_Singh:

 

Yes, that should work.

 

In section 3.2.2  Physical Layer (PHY) says "X710/XXV710/XL710 supports eight physical high speed SerDes lanes, each capable of operating at up to 10.3125 GBaud."

 

Best regards,

 

@Diego_INTEL 

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