Configuration Of Clock Supervisor - Fujitsu F2MC-8FX Hardware Manual

26.2

Configuration of Clock Supervisor

The clock supervisor consists of the following blocks:
• Control circuit
• CR oscillator circuit
• Main clock monitor
• Sub clock monitor
• Main clock selector
• Sub clock selector
• CSV control register (CSVCR)
Block Diagram of Clock Supervisor
Figure 26.2-1 shows a block diagram of the clock supervisor.
Enable Enable
CR oscillator
circuit
CR clock
Main clock
(From X0/X1)
Sub clock
(From X0A/X1A)
Figure 26.2-1 Block Diagram of Clock Supervisor
Internal bus
CSV control register (CSVCR)
Control circuit
Detect Enable
Main clock Sub clock
monitor monitor
Select Select
Detect
sub clock main clock
Main
clock
selector
1/2
Sub clock
selector
CHAPTER 26 CLOCK SUPERVISOR
Internal reset
PLL
circuit
Selector
Internal
sub clock
Internal
main clock
471