Clkin voltage level

[lechc_282591]

Hello, I changed the crystal(19.2MHz) to oscillator. The voltage amplitude of the clock signal(clkin) on my board is 0.8V(19.2MHz)and the board is not working now. My question is that what should the voltage level of the clock be. 0.8V is too low or sufficient?

   

Thank you 

   

Lehua Chen  

[lechc_282591]

I check it by applying external clock to the Clkin pin on the FX3 evaluation board. The amplitude of the clock (19.2MHz) should be larger than 1.8V. Otherwise, the chip will not work. Thanks

   

Lehua Chen

[Anonymous]

many times  mine is  0.5-1.5V  or  less  than 2v     ，but  it is  work  normal

[Anonymous]

I am seeing around 0.8V on my working board.

   

Thanks,

   

sai krishna.