ADRF6601 Analog Devices, Inc., ADRF6601 Datasheet - Page 12

• Manufacturer Part Number: ADRF6601
• Description: 750 Mhz To 1160 Mhz Rx Mixer With Integrated Fractional-n Pll And Vco
• Manufacturer: Analog Devices, Inc.

ADRF6601
REGISTER 2—FRACTIONAL DIVIDE CONTROL (DEFAULT: 0x001802)
REGISTER 3—Σ-Δ MODULATOR DITHER CONTROL (DEFAULT: 0x10000B)
DB23 DB22 DB21 DB20 DB19 DB18 DB17 DB16 DB15 DB14 DB13 DB12 DB11 DB10
0
0
1
1
DITH1
0
0
DITH0
0
1
0
1
DB23
RES
0
0
DITHER MAGNITUDE
15 (DEFAULT)
7
3
1 (RECOMMENDED)
DITH1
DB22
MAGNITUDE
0
DITHER
RESERVED
0
DITH0
DB21
0
ENABLE
DITHER
DB20
DEN
DEN
0
1
DV16 DV15 DV14 DV13 DV12 DV11 DV10 DV9 DV8 DV7 DV6 DV5 DV4 DV3 DV2 DV1 DV0
0
1
...
...
0
DB19 DB18 DB17 DB16 DB15 DB14 DB13 DB12 DB11 DB10 DB9 DB8 DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
0
...
...
1
DV16 DV15 DV14 DV13 DV12 DV11 DV10 DV9 DV8 DV7 DV6 DV5 DV4 DV3 DV2 DV1 DV0 C3(0) C2(1) C1(1)
Figure 16. Register 3—Σ-Δ Modulator Dither Control Register Map
DITHER ENABLE
DISABLE
ENABLE (DEFAULT, RECOMMENDED)
0
Figure 15. Register 2—Fractional Divide Control Register Map
0
...
...
1
FD10
0
0
...
...
0
...
...
0
0
...
...
1
FD9
0
0
...
...
1
...
...
0
0
...
...
1
FRACTIONAL VALUE MUST BE LESS THAN MODULUS
FD10
FD8
0
0
...
...
1
...
...
0
1
...
...
Rev. 0 | Page 12 of 24
FD9
FD7
0
0
...
...
0
...
...
0
...
...
1
FD8
0
...
...
1
FD6
0
0
...
...
0
...
...
DITHER RESTART VALUE
0
...
...
1
FD7
FD5
0
0
...
...
0
...
...
0
...
...
1
DB9
FD6
FRACTIONAL VALUE
FD4
0
0
...
...
0
...
...
0
...
...
1
FD5
DB8
FD3
0
0
...
...
0
...
...
0
...
...
1
FD4
DB7
0
...
...
1
FD2
0
0
...
...
0
...
...
FD3
DB6
0
...
...
1
FD1
0
0
...
...
0
...
...
DB5
FD2
0
...
...
1
FD0
0
1
0
...
...
...
...
FD1
DB4
0
...
...
1
1
...
...
1
DB3
FD0
FRACTIONAL VALUE
0
1
...
...
768 (DEFAULT)
...
...
<MDR
DITHER RESTART
VALUE
0x00001 (DEFAULT)
...
...
0x1FFFF
C3(0) C2(1) C1(0)
DB2
CONTROL BITS
CONTROL BITS
DB1
DB0