Chapter 7 S12 Clock, Reset and Power Management Unit (S12CPMU_UHV_V5)
S12ZVHY/S12ZVHL Family Reference Manual, Rev. 1.05
Freescale Semiconductor
235
7.1.3
S12CPMU_UHV_V5 Block Diagram
Figure 7-1. Block diagram of S12CPMU_UHV_V5
S12CPMU_UHV
EXTAL
XTAL
System Reset
Power-On Detect
Loop
Reference
Divider
Voltage
VSUP
Internal
Reset
Generator
Divide by
Phase
Post
Divider
1,2,.32
VCOCLK
LOCKIE
IRCTRIM[9:0]
SYNDIV[5:0]
LOCK
REFDIV[3:0]
2*(1)
Pierce
Oscillator
4MHz-20MHz
OSCE
PORF
divide
by 2
ECLK
POSTDIV[4:0]
Power-On Reset
Controlled
locked
Loop with
internal
Filter (PLL)
REFCLK
FBCLK
REFFRQ[1:0]
VCOFRQ[1:0]
Lock
detect
Regulator
6V to 18V
Autonomous
Periodic
Interrupt (API)
API Interrupt
VSS
PLLSEL
VSSX
VDDA
VDDX
Low Voltage Detect
LVRF
PLLCLK
Reference
Clock
(IRC1M)
OSCCLK
Monitor
osc monitor fail
Real Time
Interrupt (RTI)
RTI Interrupt
PSTP
CPMURTI
Oscillator status Interrupt
(XOSCLCP)
High
Temperature
Sense
HT Interrupt
Low Voltage Interrupt
APICLK
RTICLK
IRCCLK
OSCCLK
RTIOSCSEL
COP time-out
PRE
UPOSC=0 sets PLLSEL bit
API_EXTCLK
RC
Osc.
UPOSC
RESET
OSCIE
APIE
RTIE
HTDS
HTIE
LVDS
LVIE
Low Voltage Detect VDDA
OSCCLK
divide
by 4
Bus Clock
VSSA
ADC
vsup
monitor
(VREGAUTO)
ECLK2X
(Core Clock)
(Bus Clock)
COP time-out
COP
Watchdog
CPMUCOP
COPCLK
IRCCLK
OSCCLK
COPOSCSEL0
to Reset
Generator
PCE
UPOSC
UPOSC=0 clears
ACLK
COPOSCSEL1
CSAD
divide
by 2
ACLK
divide
by 2
IRCCLK
OSCCLK
IRCCLK
PLL lock interrupt
BCTL
OMRF
COPRF
PMRF
PLL monitor fail
VDDX, VDD, VDDF
OSCMOD