R01UH0822EJ0100 Rev.1.00
Page 158 of 1041
Jul 31, 2019
RX13T Group
10. Clock Frequency Accuracy Measurement Circuit (CAC)
10.2
Register Descriptions
10.2.1
CAC Control Register 0 (CACR0)
CFME Bit (Clock Frequency Measurement Enable)
This bit specifies whether clock frequency measurement is enabled or disabled.
When rewriting this bit, more time is required than other bits for the new value to be reflected in the register. Further
write access to this bit are ignored until the current write access is reflected in the register. Read the bit to confirm that the
rewrite has been reflected in the register.
Address(es): 0008 B000h
b7
b6
b5
b4
b3
b2
b1
b0
—
—
—
—
—
—
—
CFME
Value after reset:
0
0
0
0
0
0
0
0
Bit
Symbol
Bit Name
Description
R/W
b0
Clock Frequency Measurement Enable
0: Clock frequency measurement is disabled.
1: Clock frequency measurement is enabled.
R/W
b7 to b1
—
Reserved
These bits are read as 0. The write value should be 0.
R/W