Texas Instruments SM320C6455-EP manual PLL Controller Clock Align Control Register

Models: SM320C6455-EP

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SM320C6455-EP

FIXED-POINT DIGITAL SIGNAL PROCESSOR

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SPRS462B – SEPTEMBER 2007 – REVISED JANUARY 2008

7.7.3.8 PLL Controller Clock Align Control Register

The PLL controller clock align control register (ALNCTL) is shown in Figure 7-18and described in Table 7-26.

31

 

 

 

 

 

 

16

 

 

 

Reserved

 

 

 

 

 

 

 

R-0

 

 

 

 

15

 

 

5

4

3

2

0

 

 

 

Reserved

ALN5

ALN4

 

Reserved

 

 

 

R-0

R-1

R-1

 

R-1

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

 

 

 

 

 

Figure 7-18. PLL Controller Clock Align Control Register (ALNCTL) [Hex Address: 029A 0140]

 

Table 7-26. PLL Controller Clock Align Control Register (ALNCTL) Field Descriptions

Bit

Field

Value

Description

 

 

 

 

31:5

Reserved

0

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

4:3

ALNn

 

SYSCLKn alignment. Do not change the default values of these fields.

 

 

 

 

0

Do not align SYSCLKn to other SYSCLKs during GO operation. If SYSn in DCHANGE is set to 1,

 

 

 

SYSCLKn switches to the new ratio immediately after the GOSET bit in PLLCMD is set.

 

 

1

Align SYSCLKn to other SYSCLKs selected in ALNCTL when the GOSET bit in PLLCMD is set.

 

 

 

The SYSCLKn ratio is set to the ratio programmed in the RATIO bit in PLLDIVn.

 

2:0

Reserved

0

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

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Texas Instruments SM320C6455-EP manual PLL Controller Clock Align Control Register