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Visitor denruss
Visitor
8,914 Views
Registered: ‎11-10-2008

XC6SLX16-2ftg256 and MT41J128M16HA-125IT and

Hello. PCB does not work with chips MT41J128M16HA-125IT and XC6SLX16-2ftg256.
When installing the board initially supply power VDD = VDDQ = VFEFCA = VREFDQ = 1.5 V.
Then I noticed the mistake and made VDD = VDDQ = 1,5 V and VFEFCA = VREFDQ = 0.75 V.
Power VFEFCA = VREFDQ = 1.5 V could damage MT41J128M16HA or XC6SLX16 ?

 

DDR3 Freq = 303.303 MHz. c3_calib_done = '0'.

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4 Replies
Scholar austin
Scholar
8,905 Views
Registered: ‎02-27-2008

Re: XC6SLX16-2ftg256 and MT41J128M16HA-125IT and

d,

 

1.5v is within the recommended IO pin voltages for S6.  Have no idea what it may do to the other part, though.  Tou would need to review that data sheet.

 

 

Austin Lesea
Principal Engineer
Xilinx San Jose
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Xilinx Employee
Xilinx Employee
8,901 Views
Registered: ‎07-23-2015

Re: XC6SLX16-2ftg256 and MT41J128M16HA-125IT and

@denruss I don't think XC6SLX16-2ftg256 would go bad since VREF Absolute Maximum (worst case) is 3.75V. [Table 1 of DS162] You are well below it. You may want to check the memory part rating. 

 

 

- Giri
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There's no such thing as a stupid question. Feel free to ask but do a quick search to make sure it ain't already answered.
Keep conversing, give Kudos and Accept Solution when you get one.
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Visitor denruss
Visitor
8,547 Views
Registered: ‎11-10-2008

Re: XC6SLX16-2ftg256 and MT41J128M16HA-125IT and

Hello, after MT41J128M16HA chip replacement PCB board earned.

Thanks to all.

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Xilinx Employee
Xilinx Employee
8,539 Views
Registered: ‎07-23-2015

Re: XC6SLX16-2ftg256 and MT41J128M16HA-125IT and

@denruss Good to hear you were able to recover the board. Just make sure the power supplies are fine and corrected. 

 

Please close this thread by marking the post as "Accept as Solution" 

- Giri
--------------------------------------------------------------------------------------------------------------------
There's no such thing as a stupid question. Feel free to ask but do a quick search to make sure it ain't already answered.
Keep conversing, give Kudos and Accept Solution when you get one.
-----------------------------------------------------------------------------------------------------------------------
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