Fujitsu F202RA, MB89202 manual Timer Output Control Register TCR2, Pen, Tsel

CHAPTER 8 8/16-BIT CAPTURE TIMER/COUNTER

8.4.4Timer Output Control Register (TCR2)

The timer output control register (TCR2) is used to allow and prohibit the square wave output of the 8/16-bit capture timer/counter and select timer 0 output and timer 1 output.

■Timer Output Control Register (TCR2)

Figure 8.4-5 Timer Output Control Register (TCR2)

Address bit7 bit6 bit5	bit4 bit3 bit2 bit1		bit0	Initial value
0020H		PEN	TSEL	------00B
		R/W	R/W

R/W : Readable/Writable : Initial value

TSEL	Timer output selection bit
	Timer 0 output in the 8-bit mode or output in the 16-bit mode
0
	is selected.
1	Timer 1 output in the 8-bit mode is selected.
PEN	Port output enable bit
0	The P34/TO/INT10 pin acts as the general-purpose port (P34).
1	The P34/TO/INT10 pin acts as the square wave output pin
	of the 8/16-bit capture timer/counter.

Table 8.4-4 Explanation of Functions of Each Bit in Timer Output Control Register (TCR2)

	Bit name	Function
bit7		• At read, the values of these bits are undefined.
to	Unused bits
		• At write, these bits do not affect operation.
bit2
	PEN:	• When this bit is "0", the P34/TO/INT10 pin acts as the general-
bit1		purpose port (P34). When "1", it acts as the square wave output pin
	Port output enable bit
		(TO).
		• When this bit is "0", timer 0 output in the 8-bit mode or output in the
bit0	TSEL:	16-bit mode is selected. In this case, data is output from the TO pin.
	Timer output selection bit	When "1", timer 1 output in the 8-bit mode is selected. In this case,
		data is also output from the TO pin.

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