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CHAPTER 6 CLOCK SUPERVISOR
6.2 Block Diagram of Clock Supervisor
The clock Supervisor is composed of the following block:
• Main clock supervisor
• Sub clock supervisor
• Control circuit
• Clock supervisor control register (CSVCR)
• Main clock selector
• Sub clock selector
• CR oscillation circuit
■ Block Diagram of Clock Supervisor
Figure 6.2-1 shows the block diagram of clock supervisor.
Figure 6.2-1 Block Diagram of Clock Supervisor
1/2
Internal bus
Clock Supervisor control register
(CSVCR)
Control circuit
Internal reset
Internal main cloc
k
Internal sub clock
Main clock
selector
Sub clock
selector
Sub clock
supervisor
Main clock
supervisor
CR oscillation
circuit
Enable
Detection
Enable
Enable
Detection
Sub
selection
Main
selection
CR oscillation clock
Main clock
Sub clock