STW81100

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Table 16.

Table 17. Functional_Mode

FUNCTIONAL_MODE register is used to select different functional mode for the STW81100 synthesizer

according to the following table:

Table 18.

Table 19. B_COUNTER

B[8:1] Counter value (bit B0 in the next register)

HEX CODE

DEC CODE

DESCRIPTION

0x00

0

FUNCTIONAL_MODE

0x01

1

B_COUNTER

0x02

2

A_COUNTER

0x03

3

REF_DIVIDER

0x04

4

CALIBRATION

0x05

5

CONTROL

MSB

LSB

b7

b6

b5

b4

b3

b2

b1

b0

PD7PD6

PD5PD4

PD3PD2

PD1PD0

Decimal value

Description

0

Power down mode

1

Enable VCO A, output frequency divided by 2

2

Enable VCO B, output frequency divided by 2

3

Enable external VCO, output frequency divided by 2

4

Enable VCO A, output frequency divided by 4

5

Enable VCO B, output frequency divided by 4

6

Enable external VCO, output frequency divided by 4

7

Enable VCO A, direct output

8

Enable VCO B, direct output

9

Enable external VCO, direct output

MSB

LSB

b7

b6

b5

b4

b3

b2

b1

b0

B8

B7

B6

B5

B4

B3

B2

B1