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Contributor
Contributor
429 Views
Registered: ‎11-20-2018

Can i use internal clock on ZC706 for GT tranceiver?

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Hi . 

now i'm trying to implement aurora communication.

My goal is to transfer data from KCU116 (ultrascale kintex board) to zc706.

At first, i tried to connect two board through SMA connector , but i found there is no GT tranceiver via SMA in KCU116.

So, now i try to use SFP connector.

 

My question is 

1. According to XAPP1216(https://www.xilinx.com/support/documentation/application_notes/xapp1216-axi-chip2chip-aurora.pdf), they use external clock source to SMA_MGT_REFCLK . 

In my case, where is the clock pin/port for SFP module.

 

2. when i see zc706 manual, there are some clock source on board (ex. SI570,SI5324).

  can i use this clock source as reference clock for aurora communication?

 

thanks you.

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Xilinx Employee
Xilinx Employee
344 Views
Registered: ‎08-07-2007

回复: Can i use internal clock on ZC706 for GT tranceiver?

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hi @kangsungsik 

 

1. According to XAPP1216(https://www.xilinx.com/support/documentation/application_notes/xapp1216-axi-chip2chip-aurora.pdf), they use external clock source to SMA_MGT_REFCLK . 

In my case, where is the clock pin/port for SFP module.

- on KCU116 you can use Bank #226 GT0, 1,2,3 for SFP module. The reference clock is MGTREFCLK1 of Bank 226. This is user programmable.

check UG1239 Table 3‐8 for the pinout.

http://www.xilinx.com/support/documentation/boards_and_kits/kcu116/ug1239-kcu116-eval-bd.pdf

 

- On ZC706 , you can use GTX_BANK_111 GT2 for SFP. You can borrow MGTREFCLK1P_110 from Bank 110 for reference clock. This is programmable.

check UG954 Table 1-14 and Table 1-15 for the pintout.

http://www.xilinx.com/support/documentation/boards_and_kits/zc706/ug954-zc706-eval-board-xc7z045-ap-soc.pdf

 

2. when i see zc706 manual, there are some clock source on board (ex. SI570,SI5324).

  can i use this clock source as reference clock for aurora communication?

- SI5324 can be reference clock. 

 

Thanks,

Boris

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4 Replies
Moderator
Moderator
381 Views
Registered: ‎07-30-2007

Re: Can i use internal clock on ZC706 for GT tranceiver?

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The ZC706 Rev 2 schematic on page 8 shows the SFP+ going into bank 111.  That bank has an SMA refclk input on refclk 1 that can be used. There is also an SI5324 input on bank 110 that could be used.  Internal refclks are for testing purposes and don't have the jitter tolerances needed for MGT operation. 




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Xilinx Employee
Xilinx Employee
345 Views
Registered: ‎08-07-2007

回复: Can i use internal clock on ZC706 for GT tranceiver?

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hi @kangsungsik 

 

1. According to XAPP1216(https://www.xilinx.com/support/documentation/application_notes/xapp1216-axi-chip2chip-aurora.pdf), they use external clock source to SMA_MGT_REFCLK . 

In my case, where is the clock pin/port for SFP module.

- on KCU116 you can use Bank #226 GT0, 1,2,3 for SFP module. The reference clock is MGTREFCLK1 of Bank 226. This is user programmable.

check UG1239 Table 3‐8 for the pinout.

http://www.xilinx.com/support/documentation/boards_and_kits/kcu116/ug1239-kcu116-eval-bd.pdf

 

- On ZC706 , you can use GTX_BANK_111 GT2 for SFP. You can borrow MGTREFCLK1P_110 from Bank 110 for reference clock. This is programmable.

check UG954 Table 1-14 and Table 1-15 for the pintout.

http://www.xilinx.com/support/documentation/boards_and_kits/zc706/ug954-zc706-eval-board-xc7z045-ap-soc.pdf

 

2. when i see zc706 manual, there are some clock source on board (ex. SI570,SI5324).

  can i use this clock source as reference clock for aurora communication?

- SI5324 can be reference clock. 

 

Thanks,

Boris

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Contributor
Contributor
306 Views
Registered: ‎11-20-2018

Re: Can i use internal clock on ZC706 for GT tranceiver?

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@roym  thanks for your reply.

it is great help for me.

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Contributor
Contributor
304 Views
Registered: ‎11-20-2018

回复: Can i use internal clock on ZC706 for GT tranceiver?

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thanks, @borisq.

Your detailed explanation has helped me to confirm what I know. 

I will try as you advice

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