JTAG connection ereror in FPGA

[amburose]

jtag initial voltage

hi ,
i got error message when connecting Jtag cable to FPGA....
in my board i got jtag pin initial voltage
VCC- 3.22 V
GND- 0 V
TCK- 2.5 V
TDO- 0.8 V
TDI- 2.5 V
TMS- 0.8 V


is it acceptable..............

kindly reply as soon as possible......

 

[tlp71@hotmail.com]

wich kind of error?

 

[amburose]

heartlythanks for ur response............

error msg is................


Validating chain...
INFO:iMPACT:1205 - Testing for '1' at position 5. The Instruction capture of the device 1 does not match expected capture.
INFO:iMPACT:1206 - Instruction Capture = '000000'
INFO:iMPACT:1207 - Expected Capture = 'XXXX01'
ERROR:iMPACT:1208 - '1':Boundary-scan chain test failed at bit position '1' .
A problem may exist in the hardware configuration.
Check that the cable, scan chain, and power connections are intact,
that the specified scan chain configuration matches the actual hardware, and
that the power supply is adequate and delivering the correct voltage.






kindly reply as soon as possible.........

 

[FvM]

Depending on the FPGA type, additional prerequisites may exist for the BSD logic to be active, e.g. presence of core oder additional supply voltages.

 

[amburose]

im using spartan 3 series...XC3S400PQ208


then 3.3 supply voltage ..is it enough

 

[khaila]

sorry but the most common problem is people are confused how to connect TDI and TDO so you may check if they are connected propably.

 

[karikalan_t79]

just check the board schematic, and proper pull up and pull downs for tdi and tclk

 

[satishkumar]

i think error in connection.check JTAG connections.there is process to connect

 

[Zerox100]

Perhaps you connected power to a wrong place! You should connect power of your board to your JTAG programmer!