with 40 MHZ osc serin2 not work

[Joe Rocci]

Maximum Crystal Frequency is 25 MHz - see datasheet
(this may be part of your problem)

Also, it's unlikely the oscillator was clocking at 40 MHz. Once you get past about 25 MHz, most crystals are designed for overtone operation. In order to get the oscillator to operate in the crystal's overtone mode, a special circuit is usually required.

Joe