ADRF6601 Analog Devices, Inc., ADRF6601 Datasheet - Page 13

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

REGISTER 4—PLL CHARGE PUMP, PFD, AND REFERENCE PATH CONTROL (DEFAULT: 0x0AA7E4)
RMS2 RMS1 RMS0 RS1
DB23 DB22
RMS2 RMS1 RMS0
0
0
0
0
1
1
1
1
MUX SELECT
REF OUTPUT
0
0
1
1
0
0
1
1
DB21 DB20 DB19
0
1
0
1
0
1
0
1
INPUT REF
REF OUTPUT MUX SELECT
LOCK DETECT (DEFAULT)
VPTAT
REF_IN (BUFFERED)
0.5 × REF_IN (BUFFERED)
2 × REF_IN (BUFFERED)
TRISTATE
RESERVED
RESERVED
PATH
RS1
0
0
1
1
RS0
RS0
0
1
0
1
CURRENT
SOURCE
DB18
CPM
CPM
0
1
Figure 17. Register 4—PLL Charge Pump, PFD, and Reference Path Control Register Map
REF
CP
INPUT REFERENCE
PATH SOURCE
2 × REF_IN
REF_IN (DEFAULT)
0.5 × REF_IN
0.25 × REF_IN
CHARGE PUMP CURRENT
REFERENCE SOURCE
INTERNAL (DEFAULT)
EXTERNAL
CPBD CPB4 CPB3 CPB2 CPB1 CPB0 CPP1 CPP0 CPS CPC1 CPC0 PE1
DB17 DB16 DB15 DB14 DB13 DB12 DB11 DB10 DB9
CPBD
0
1
PFD
POL
CPB4 CPB3 CPB2 CPB1 CPB0
0
0
0
0
1
1
PFD PHASE OFFSET POLARITY
NEGATIVE
POSITIVE (DEFAULT)
PFD PHASE OFFSET
0
0
0
1
0
1
MULTIPLIER
0
0
1
0
0
1
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0
0
1
1
0
1
0
1
0
0
0
1
CPP1 CPP0
0
0
1
1
CURRENT
PFD PHASE OFFSET MULTIPLIER
0 × 22.5°/I
1 × 22.5°/I
6 × 22.5°/I
10 × 22.5°/I
16 × 22.5°/I
31 × 22.5°/I
CP
0
1
0
1
CPMULT
CPMULT
CPMULT
CPS
0
1
SRC
CPMULT
CPMULT
CPMULT
CHARGE PUMP CURRENT
250µA
500µA (DEFAULT)
750µA
1000µA
CP
CONTROL
CHARGE PUMP CONTROL SOURCE
CONTROL BASED ON STATE OF DB7/DB8 (CP CONTROL)
CONTROL FROM PFD (DEFAULT)
CPC1 CPC0
0
0
1
1
DB8
(RECOMMENDED)
(DEFAULT)
CP
0
1
0
1
DB7
CHARGE PUMP CONTROL
BOTH ON
PUMP DOWN
PUMP UP
TRISTATE (DEFAULT)
DB6
PFD EDGE
PE1
0
1
PE0
0
1
DB5
DIVIDER PATH EDGE
SENSITIVITY
FALLING EDGE
RISING EDGE (DEFAULT)
PE0 PAB1 PAB0 C3(1) C2(0) C1(0)
PAB0 PAB1
0
0
1
1
REFERENCE PATH EDGE
SENSITIVITY
FALLING EDGE
RISING EDGE (DEFAULT)
BACKLASH
DB4
PFD ANTI-
DELAY
0
1
0
1
DB3
PFD ANTIBACKLASH
DELAY
0ns (DEFAULT)
0.5ns
0.75ns
0.9ns
DB2
CONTROL BITS
ADRF6601
DB1
DB0