PXD20RM Datasheet, PDF (223/1628 Pages) Freescale Semiconductor, Inc – PXD20 Microcontroller

system clock
0
primary PLL
1
secondary PLL
2
CGM_AC3_DC Register
unused
clock divider
QuadSPI clock
CGM_AC3_SC Register
Figure 8-23. MC_CGM Auxiliary Clock 3 Generation Overview
div. 16 MHz int. RC osc.
0
div. 4-16 MHz ext. xtal osc.
1
secondary PLL
2
primary PLL/2
3
CGM_AC4_DC Register
unused
clock divider
DCULite clock
CGM_AC4_SC Register
Figure 8-24. MC_CGM Auxiliary Clock 4 Generation Overview
8.3.4.2 Dividers Functional Description
Dividers are used for the generation of divided system and peripheral clocks. The MC_CGM has the
following control registers for built-in dividers:
Freescale Semiconductor
PXD20 Microcontroller Reference Manual, Rev. 1
Preliminary—Subject to Change Without Notice
8-27