S1M8831A Samsung Semiconductor, Inc., S1M8831A Datasheet - Page 22

• Manufacturer Part Number: S1M8831A
• Description: Fractional-n Rf/integer-n If Dual Pll Frequency Synthesizer
• Manufacturer: Samsung Semiconductor, Inc.

S1M8831A/33
Phase Detector Polarity (RF_CP_WORD/IF_CP_WORD; RF_N[13]/IF_N[17])
Depending on VCO characteristics, IF_N[17] and RF_N[13] bits should be set as follows:
22
Control Bits
RF_N[13]
IF_N[17]
Negative Slope
Negative Slope
VCO
Output
Frequency
LOW (0)
VCO Characteristics
VCO Input
Voltage
Positive Slope
Positive Slope
HIGH (1)
FRACTIONAL-N RF/INTEGER-N IF DUAL PLL
(1)
(2)
Comments
RF PFD
IF PFD