Freescale Semiconductor FlexRay MFR4310 - Figure C-1. Recommended PCB Layout (64-Pin LQFP) for Standard Pierce Oscillator Mode

Printed Circuit Board Layout Recommendations
MFR4310 Reference Manual, Rev. 2
262 Freescale Semiconductor
Figure C-1. Recommended PCB Layout (64-pin LQFP) for Standard Pierce Oscillator Mode
Cload
Cd Cd
Cd
Cd
Cd
C3
Rs
Rb
Q
C1 C2
VDDX1
VSSX1
VSSR
VDDR
VSSOSC
VDDOSC
VSSX4
VDDX4
VSS2_5
VDD2_5
VDDX3
VSSX3
VDDA VSSA
Suggested component values:
Q: NDK NX8045GA - 40MHz
C1 = C2 = 2pF
Rb = 1MΩ
Rs = 0Ω (i.e. short circuit)
C3 = Cload = 220nF
Cd = 100nF
Cd
VDDX2
VSSX2