Preliminary Technical Data

ADF41513

Rev. PrL | Page 19 of 33

REGISTER 2 (R2) MAP

Phase Adjust

Set Register 2, Bit 31 to 1 to enable phase adjust. Phase adjust

increases the phase of the output relative to the current phase.

The phase change occurs after a write to Register 0.

(5)

Phase Value

Register 2, Bits[15:4] set the phase value for phase adjust. For

example, setting the phase value = 512 increases the output

phase by 45°.

If phase adjust is not used, set the phase value to 0.

PHASE REGISTER (R2)

DBB

CONTROL

BITS

12-BIT PHASE VALUE (PHASE)

RESERVED

PA1

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

P1

P2

P3

P4

P5

P6

P7

P8

P9

P10

P11

P12

NOTES

1. DBB = DOUBLE-BUFFERED BITS.

P12

P11

...

P2

P1

PHASE VALUE

0

0

...

0

0

0

0

0

...

0

1

1

0

0

...

1

0

2

0

0

...

1

1

3

.

.

...

.

.

.

.

.

...

.

.

.

.

.

...

.

.

.

1

1

...

0

0

4,092

1

1

...

0

1

4,093

1

1

...

1

0

4,094

1

1

...

1

1

4,095

PHASE ADJUST

PA1

0

DISABLED

1

ENABLED

DB31 DB30 DB29 DB28 DB27 DB26 DB25 DB24 DB23 DB22 DB21 DB20 DB19 DB18 DB17 DB16 DB15 DB14 DB13 DB12 DB11 DB10 DB9

DB8

DB7 DB6

DB5 DB4

DB3 DB2

DB1 DB0

C3(0)

C4(0)

C2(0) C1(1)

Figure 23. Register 2 (R2) Map