ADF7012 Просмотр технического описания (PDF) - Analog Devices

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Компоненты Описание

производитель

ADF7012

Multichannel ISM Band FSK/GFSK/OOK/GOOK/ASK Transmitter

Analog Devices 

ADF7012

REGISTER DESCRIPTIONS

REGISTER 0: R REGISTER

OUTPUT VCO

DIVIDER ADJUST

CLOCK OUT

DIVIDER

4-BIT R DIVIDER

11-BIT FREQUENCY ERROR CORRECTION

OD2

0

0

1

1

OD1

0

1

0

1

OUTPUT DIVIDER

DISABLED

DIVIDE BY 2

DIVIDE BY 4

DIVIDE BY 8

D1 CRYSTAL DOUBLER

0 CRYSTAL DOUBLER OFF

1 CRYSTAL DOUBLER ON

X1 XOEB

0 XTAL OSCILLATOR ON (DEFAULT)

1 XTAL OSCILLATOR OFF

F-COUNTER

F11 ....... F3 F2 F1 OFFSET

0 ....... 1 0

0

+1023

0 ....... 1 0

1

+1022

0 ....... .

.

.

.

0 ....... 0 0

1

+1

0 ....... 0 0

0

+0

1 ....... 1 1

1

–1

1 ....... 1 1

0

–2

. ....... .

.

.

–3

1 ....... 0 0

1

–1023

1 ....... 0 0

0

–1024

VA2 VA1

0

0

0

1

1

0

1

1

VCO ADJUST

NO VCO ADJUSTMENT

.......

.......

MAX VCO ADJUSTMENT

CLKOUT

CL4 CL3 CL2 CL1 DIVIDE RATIO

0

0

0

1

2

0

0

1

0

4

0

0

1

1

6

0

1

0

0

8

.

.

.

.

.

.

.

.

.

16 (DEFAULT)

.

.

.

.

.

1

1

1

0

28

1

1

1

1

30

Figure 41. Register 0: R Register

RF R COUNTER

RL4 RL3 RL2 RL1 DIVIDE RATIO

0

0

0

1

1

0

0

1

0

2

0

0

1

1

3

0

1

0

0

4

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

1

1

0

0

12

1

1

0

1

13

1

1

1

0

14

1

1

1

1

15

Rev. A | Page 24 of 28

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