CDCE421A

SCAS873 – APRIL 2009..................................................................................................................................................................................................... www.ti.com

Table 9. Word 2

Recommended

Bit

Name

Description/Function

Type

Value

0

C0

Register selection

W

0

1

C1

Register selection

W

1

2

C2

Register selection

W

0

3

LFRCSEL

Loop filter control settings, Bit 8

W

1

4

LFRCSEL

Loop filter control settings, Bit 9

W

1

5

LFRCSEL

Loop filter control settings, Bit 10

W

0

6

LFRCSEL

Loop filter control settings, Bit 11

W

0

7

LFRCSEL

Loop filter control settings, Bit 12

W

0

8

LFRCSEL

Loop filter control settings, Bit 13

W

0

9

LFRCSEL

Loop filter control settings, Bit 14

W

0

10

LFRCSEL

Loop filter control settings, Bit 15

W

0

Table 10. Word 3

Recommended

Bit

Name

Description/Function

Type

Value

0

C0

Register selection

W

1

1

C1

Register selection

W

1

2

C2

Register selection

W

0

3

LFRCSEL

Loop filter control settings, Bit 16

W

0

4

LFRCSEL

Loop filter control settings, Bit 17

W

0

5

LFRCSEL

Loop filter control settings, Bit 18

W

0

6

ICPSEL

Charge pump current Sel, Bit 0

W

1

7

ICPSEL

Charge pump current Sel, Bit 1

W

1

8

ICPSEL

Charge pump current Sel, Bit 2

W

1

9

ICPSEL

Charge pump current Sel, Bit 3

W

1

10

TITEST2

Reserved

W

0

Table 11. Word 4

Recommended

Bit

Name

Description/Function

Type

Value

0

C0

Register selection

W

0

1

C1

Register selection

W

0

2

C2

Register selection

W

1

3

CALWRD

VCO calibration Word, Bit 0

W

0

4

CALWRD

VCO calibration Word, Bit 1

W

0

5

CALWRD

VCO calibration Word, Bit 2

W

0

6

CALWRD

VCO calibration Word, Bit 3

W

0

7

CALWRD

VCO calibration Word, Bit 4

W

0

8

CALWRD

VCO calibration Word, Bit 5

W

0

9

CALOVR

VCO calibration override

W

0

10

ENCAL

Enable VCO calibration

W

1

14

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