R01UH0823EJ0100 Rev.1.00
Page 184 of 1823
Jul 31, 2019
RX23W Group
9. Clock Generation Circuit
9.2.12
High-Speed On-Chip Oscillator Control Register 2 (HOCOCR2)
Note:
Set the PRCR.PRC0 bit to 1 (write enabled) before rewriting this register.
High-speed on-chip control register 2 is used to set operation of the high-speed on-chip oscillator.
When the HOCOCR.HCSTP bit is 0 (HOCO is operating), do not write to the HOCOCR2 register.
HCFRQ[1:0] Bits (HOCO Frequency Setting)
These bits set the frequency of the HOCO.
Address(es): 0008 0037h
b7
b6
b5
b4
b3
b2
b1
b0
—
—
—
—
—
—
HCFRQ[1:0]
Value after reset:
0
0
0
0
0
0
0
0
Bit
Symbol
Bit Name
Description
R/W
b1, b0
HOCO Frequency Setting
b1 b0
0 0: 32 MHz
1 1: 54 MHz
Settings other than above are prohibited.
R/W
b7 to b1
—
Reserved
These bits are read as 0. The write value should be 0.
R/W