Motorola ColdFire MCF5281 - Manual (Page 173)

Clock Module
Freescale Semiconductor 9-3
.
Figure 9-1. Clock Module Block Diagram
CLKOUT
XTAL
EXTERNAL CLOCK
OSC
PLLREF
REFERENCE
CLOCK
PLL
MFD PLLMODE
LOCEN
CLKMOD[1:0] RSTOUT CLKOUT
LOCKS
LOCK
LOCS
RFD[2:0]
TO RESET
MODULE
LOLRE LOCRE
STPMD[1:0]
STOP MODE
PLLSEL DISCLK
PLL CLOCK OUT
SCALED PLL CLOCK OUT
INTERNAL CLOCK
PLLMODE
CLKGEN
STOP MODE
INTERNAL
CLOCKS
LOCK
FWKUP
EXTAL
MCF5282 and MCF5216 ColdFire Microcontroller User’s Manual, Rev. 3