Fujitsu F2MC-16LX Hardware Manual page 414

CHAPTER 21 UART
[Bit 1] SCKE: SCLK Enable
This bit specifies whether to use SCK0 as a clock input pin or as a clock output pin during
communication in CLK Synchronous Mode (Mode 2). Set this bit to "0" in CLK asynchronous
mode or external clock mode.
• 0: SCK0 functions as clock input pin.
• 1: SCK0 functions as clock output pin.
Note:
An external clock source must be selected in advance when specifying use as a clock input
pin via this bit.
[Bit 0] SOE: Serial Output Enable
This bit specifies whether to use the external pin (SOT0), which is used also as a general-
purpose I/O port pin, as a serial input pin or as an I/O port pin.
• 0: The pin functions as a general-purpose I/O port pin.
• 1: The pin functions as the serial data output pin (SOT0).
398