Texas Instruments TMS320DM643x manual PLL Controller Divider 2 Register PLLDIV2, D2EN, D3EN

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PLL Controller Registers

5.4.6 PLL Controller Divider 2 Register (PLLDIV2)

The PLL controller divider 2 register (PLLDIV2) is shown in Figure 5-8and described in Table 5-10. Divider 2 controls divider for SYSCLK2.

Figure 5-8. PLL Controller Divider 2 Register (PLLDIV2)

31				16
		Reserved
		R-0
15	14	5	4	0
D2EN	Reserved			RATIO
R/W-1	R-0			R/W-2h or 9h(1)

LEGEND: R/W = Read/Write; R = Read only; -n= value after reset

(1)For PLLC1, RATIO defaults to 2h (PLL1 divide by 3); for PLLC2, RATIO defaults to 9h (PLL2 divide by 10).

Table 5-10. PLL Controller Divider 2 Register (PLLDIV2) Field Descriptions

Bit	Field	Value	Description
31-16	Reserved	0	Reserved
15	D2EN		Divider 2 enable.
		0	Divider 2 is disabled.
		1	Divider 2 is enabled.
14-5	Reserved	0	Reserved
4-0	RATIO	0-1Fh	Divider ratio. Divider value = RATIO + 1. For example, RATIO = 0 means divide by 1.

5.4.7 PLL Controller Divider 3 Register (PLLDIV3)

The PLL controller divider 3 register (PLLDIV3) is shown in Figure 5-9and described in Table 5-11. Divider 3 controls divider for SYSCLK3. PLLDIV3 is not used on PLLC2.

Figure 5-9. PLL Controller Divider 3 Register (PLLDIV3)

31				16
		Reserved
		R-0
15	14	5	4	0
D3EN	Reserved			RATIO
R/W-1	R-0			R/W-5h

LEGEND: R/W = Read/Write; R = Read only; -n= value after reset

Table 5-11. PLL Controller Divider 3 Register (PLLDIV3) Field Descriptions

Bit	Field	Value	Description
31-16	Reserved	0	Reserved
15	D3EN		Divider 3 enable.
		0	Divider 3 is disabled.
		1	Divider 3 is enabled.
14-5	Reserved	0	Reserved
4-0	RATIO	0-1Fh	Divider ratio. Divider value = RATIO + 1. For example, RATIO = 0 means divide by 1.

52	PLL Controller	SPRU978E–March 2008
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