STV9432TAP

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Figure

13.

Time

Response

of

the

PLL/

Characteristic equation solutions (with real

solutions)

Figure

14.

Time

Response

of

the

PLL/

Characteristic

equation

solutions

(with

complex solutions)

Table 3

Valid Time Constants Examples

Note : Case of A[2:0] = 1 (001) and B[2:0] = 4 (100):

Table meaning: N = No possible capture - No stability, Y = PLL can lock.

PLL Frequency

Input Frequency

f

1

f

0

t

f

1

f

0

t

PLL Frequency

Input Frequency

f

1

f

0

t

f

1

f

0

t

B \ A

0

123

4

5

6

0

YYYY

YYYY

YYYY

YYYN

YNNN

NNNN

NNNN

1

YYYY

YYYY

YYYY

YYYN

YNNN

NNNN

NNNN

2

NYYY

YYYY

YYYY

YYYN

YNNN

NNNN

NNNN

3

NNNY

YYYY

YYYY

YYYN

YNNN

NNNN

NNNN

4

NNNN

YYYY

YYYN

YNNN

NNNN

NNNN

5

NNNN

NNNY

YYYY

YYYN

YNNN

NNNN

NNNN

6

NNNN

NNNN

NYYY

YYYN

YNNN

NNNN

NNNN

7

NNNN

NNNN

NNNY

YYYN

YNNN

NNNN

NNNN

LD[6:1]

8

16

24

32

Valid Time Constants

N

Y

Y

Y