Fujitsu MB89202, F202RA manual 1 12-bit PPG Control Register 1 RCR21, RCK1, RCK0

CHAPTER 9 12-BIT PPG TIMER

9.4.112-bit PPG Control Register 1 (RCR21)

The 12-bit PPG control register 1 comprises bits for count clock selection of the 12-bit PPG timer and bits for setting the "H" width.

■ 12-bit PPG Control Register 1 (RCR21)
			Figure 9.4-2 12-bit PPG Control Register 1 (RCR21)
Address	bit7	bit6	bit5	bit4	bit3	bit2	bit1	bit0	Initial value
0014H	RCK1 RCK0		HSC5	HSC4	HSC3 HSC2		HSC1	HSC0	00000000B
	R/W	R/W	R/W	R/W	R/W	R/W	R/W	R/W
				HSC5 to HSC0				"H" width setting bits
				XXXXXX Compare value for the "H" width of 12-bit PPG outputs.
				RCK1	RCK0			Count clock selection bits
				0	0				2 tINST
				0	1				4 tINST
				1	0				16 tINST
				1	1				256 tINST
R/W : Readable/Writable
:	Initial value

Table 9.4-1 Explanation of Functions of Each Bit in 12-bit PPG Control Register 1 (RCR21)

	Bit name		Function
bit7,		RCK1, RCK0:	These bits are used to select a count clock of the 12-bit PPG timer from four types of
		Count clock
bit6			internal count clocks.
		selection bits
bit5		HSC5 to HSC0:	These bits are used to set the number of counts corresponding to the "H" width of
			12-bit PPG timer outputs (the compare value for the "H" width), and the contents of
to		"H" width setting
			these bits and the HSC6 to HSC11 bits of the RCR22 register are compared with a
bit0		bits
			count by the counter.

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