Datasheet

MC56F8006/MC56F8002 Digital Signal Controller, Rev. 4
General System Control Information
Freescale Semiconductor36
Figure 10. Typical Crystal Oscillator Circuit: Low-Range, Low-Power Mode
Figure 11. Typical Crystal or Ceramic Resonator Circuit: High-Range, Low-Power Mode
Figure 12. Typical Crystal or Ceramic Resonator Circuit: Low Range and High Range, High-Gain Mode
6.4.3 External Clock Input — Crystal Oscillator Option
The recommended method of connecting an external clock is illustrated in Figure 13. The external clock source is connected to
XTAL and the EXTAL pin is grounded or configured as GPIO while CLK_MOD bit in OSCTL register is set. The external
clock input must be generated using a relatively low impedance driver with maximum frequency less than 8 MHz.
EXTALXTAL
56F8002/56F8006
Crystal Frequency = 32–38.4 kHz
R
F
EXTALXTAL
56F8002/56F8006
Crystal Frequency = 1–16 MHz
C
1
C
2
R
F
EXTALXTAL
56F8002/56F8006
R
S
Low Range: Crystal Frequency = 32–38.4 kHz
or
High Range: Crystal Frequency = 1–16 MHz
C
1
C
2