TMS320C6472ECTZ datasheet(155/269 Pages) TI1

155 / 269 page

TMS320C6472

www.ti.com

SPRS612G

– JUNE 2009 – REVISED JULY 2011

7.8.3.4

PLL1 PLL Multiply Control Register (PLLM)

The PLL multiplier control register (PLLM) defines the input reference clock frequency multiplier. The

multiplier should be chosen such that the output frequency should not exceed device frequency; i.e., no

more than 700 MHz for the 700-MHz device. The PLLM register is shown in Figure 7-16 and described in

Table 7-23.

Reserved

PLLM

R-0

R/W-13h

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

Figure 7-17. PLL Multiply Control Register (PLLM)

Table 7-23. PLL Multiply Control Register (PLLM) Field Descriptions

Bit

Field

Value

Description

31:5

Reserved

Reserved.

4:0

PLLM

PLL1 Multiplier Bits

Defines the frequency multiplier of the input reference clock (CLKIN1).

09h - 1Fh

x10 - x32 multiplier rate (multiplier is value + 1)

7.8.3.5

PLL1 PLL Controller Divider Register (PLLDIV10)

The (SYSREFCLK) frequency is divided by PLLDIV10 to get SYSCLK10. The PLL controller divider

Reserved

R-0

DnEN

Reserved

RATIO

R/W-1

R-0

R/W-3

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

Figure 7-18. PLL Controller Divider Register (PLLDIV10)

Table 7-24. PLL Controller Divider Register (PLLDIV10) Field Descriptions

Bit

Field

Value

Description

31:16

Reserved

Reserved. The reserved bit location is always read as 0. A value written to this field has no effect.

DnEN

Divider Dn enable bit.

Divider n is disabled. No clock output.

Divider n is enabled.

14:5

Reserved

Reserved. The reserved bit location is always read as 0. A value written to this field has no effect.

4:0

RATIO

0-1Fh

Divider ratio bits.

Reserved

2h-1Fh

÷3 to ÷32. Divide frequency by 3 to divide frequency by 32.

C64x+ Peripheral Information and Electrical Specifications

155

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