R01UH0823EJ0100 Rev.1.00
Page 171 of 1823
Jul 31, 2019
RX23W Group
9. Clock Generation Circuit
lists the I/O pins of the clock generation circuit.
Table 9.2
I/O Pins of Clock Generation Circuit
Pin Name
I/O
Description
XTAL
Output
These pins are used to connect a crystal. The EXTAL pin can also be used to input an
external clock. For details, refer to section 9.3.2, External Clock Input.
EXTAL
Input
XCIN
Input
These pins are used to connect a 32.768-kHz crystal.
XCOUT
Output
CLKOUT
Output
Clock output pin
XTAL1_RF
Input
Connect a 32-MHz oscillator.
XTAL2_RF
Output
CLKOUT_RF
Output
Bluetooth-dedicated clock output pin