ADF4159CCPZ-RL7 View Datasheet(PDF) - Analog Devices
Part Name
Description
Manufacturer
ADF4159CCPZ-RL7
Analog Devices
ADF4159CCPZ-RL7 Datasheet PDF : 36 Pages
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ADF4159
STEP REGISTER (R6) MAP
When Bits DB[2:0] are set to 110, the on-chip step register
(Register R6) is programmed (see Figure 31).
Reserved Bits
All reserved bits must be set to 0 for normal operation.
Data Sheet
Step Select
When Bit DB23 is set to 0, Step Word 1 is selected. When
Bit DB23 is set to 1, Step Word 2 is selected.
20-Bit Step Word
Bits DB[22:3] determine the step word. The step word is the
number of steps in the ramp.
RESERVED
20-BIT STEP WORD
CONTROL
BITS
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
0 0 0 0 0 0 0 0 SSE1 S20 S19 S18 S17 S16 S15 S14 S13 S12 S11 S10 S9 S8 S7 S6 S5 S4 S3 S2 S1 C3(1) C2(1) C1(0)
SSE1 STEP SEL
0 STEP WORD 1
1 STEP WORD 2
S20 S19
00
00
00
00
.
.
.
.
.
.
11
11
11
11
... S2 S1
... 0 0
... 0 1
... 1 0
... 1 1
... .
.
... .
.
... .
.
... 0 0
... 0 1
... 1 0
... 1 1
STEP WORD
0
1
2
3
.
.
.
1,048,572
1,048,573
1,048,574
1,048,575
Figure 31. Step Register (R6) Map
Rev. B | Page 22 of 36
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