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User’s Manual U11302EJ4V0UM
CHAPTER 10 CLOCK OUTPUT CONTROLLER
10.1 Clock Output Controller Functions
The clock output controller is used for carrier output during remote controlled transmission and clock output
for supply to a peripheral LSI. The clock selected by timer clock select register 0 (TCL0) is output from the PCL/
P35 pin.
Follow the procedure below to output clock pulses.
[1] Select the clock pulse output frequency (with clock pulse output disabled) using bits 0 to 3 (TCL00 to
TCL03) of TCL0.
[2] Set the P35 output latch to 0.
[3] Set bit 5 (PM35) of port mode register 3 (PM3) to 0 (set to output mode).
[4] Set bit 7 (CLOE) of TCL0 to 1.
Caution
Clock output cannot be used when the P35 output latch is set to 1.
Remark
When clock output enable/disable is switched, the clock output controller does not output pulses
with small widths (see the mark
*
in
Figure 10-1
).
Figure 10-1. Remote Controlled Output Application Example
CLOE
PCL/P35 pin output
*
*
