Table 9-14 Internal Clock Switching and TCG Operation
Clock Levels Before and After
No.
Modifying Bits CKS1 and CKS0
TCG Operation
Clock before
switching
1
Goes from low level to low level
Clock after
switching
Count
clock
TCG
N
N
N
N+1
Write to CKS1 and CKS0
Clock before
switching
2
Goes from low level to high level
Clock before
switching
Count
clock
TCG
N+1
N+2
Write to CKS1 and CKS0
Clock before
switching
3
Goes from high level to low level
Clock before
switching
*
Count
clock
TCG
N+1
N+2
Write to CKS1 and CKS0
228
ETC [ ETC ]
