UPGRADE YOUR BROWSER

We have detected your current browser version is not the latest one. Xilinx.com uses the latest web technologies to bring you the best online experience possible. Please upgrade to a Xilinx.com supported browser:Chrome, Firefox, Internet Explorer 11, Safari. Thank you!

cancel
Showing results for 
Search instead for 
Did you mean: 
Visitor Rengainria
Visitor
8,810 Views
Registered: ‎04-15-2015

USER CLK can not be selected through PCA954A switch in VC707

Jump to solution

I want to use, USER CLK in my application, when i try to establish an I2C link with USER CLK through I2C 8:1 switch PCA954A by initially sending PCA954A address 0x74 and then configuration byte as 0x01 and stop condition. When i try to access the USER CLK at address 0x70, i'm not getting acknowledgement from the slave. Can someone help me to fix my problem.  I have attached the vhd code of my I2C controller

0 Kudos
1 Solution

Accepted Solutions
Visitor Rengainria
Visitor
16,623 Views
Registered: ‎04-15-2015

Re: USER CLK can not be selected through PCA954A switch in VC707

Jump to solution

Hi,

I have fixed this bug, the problem was i was referring slave address in september 2014 manual, which is not working, when i looked at april 2015 manual it is working without any problem.

 

In the september 2014 version of VC707 userguide, under I2C Bus sub section, slave address for USER_CLK_SDL/SCL  is 0b1110000,  in the april 2015 version of the userguide, slave address for USER_CLK_SDL/SCL(Si570 Clock) is 0b1011101.

 

Address given is the 2014 version of userguide is not working, while april 2015 gives the correct slave address.

 

Thank you

0 Kudos
2 Replies
Moderator
Moderator
8,788 Views
Registered: ‎02-16-2010

Re: USER CLK can not be selected through PCA954A switch in VC707

Jump to solution
You can use the reference designs available for VC707 to program the USER_CLK. Are you looking to do a different operation than this?

Check the reference designs at the link below.
http://xgoogle.xilinx.com/search?output=xml_no_dtd&ie=UTF-8&oe=UTF-8&client=support&proxystylesheet=support&site=Answers_Docs&filter=0&resultsView=category&tab=bk&num=1000&sortBy=date&show_dynamic_navigation=1&sort=date%3AD%3AR%3Ad1&documentClass=Doc...
------------------------------------------------------------------------------
Don't forget to reply, give kudo and accept as solution
------------------------------------------------------------------------------
0 Kudos
Visitor Rengainria
Visitor
16,624 Views
Registered: ‎04-15-2015

Re: USER CLK can not be selected through PCA954A switch in VC707

Jump to solution

Hi,

I have fixed this bug, the problem was i was referring slave address in september 2014 manual, which is not working, when i looked at april 2015 manual it is working without any problem.

 

In the september 2014 version of VC707 userguide, under I2C Bus sub section, slave address for USER_CLK_SDL/SCL  is 0b1110000,  in the april 2015 version of the userguide, slave address for USER_CLK_SDL/SCL(Si570 Clock) is 0b1011101.

 

Address given is the 2014 version of userguide is not working, while april 2015 gives the correct slave address.

 

Thank you

0 Kudos