S1M8831A Samsung Semiconductor, Inc., S1M8831A Datasheet - Page 25

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

FRACTIONAL-N RF/INTEGER-N IF DUAL PLL
Programmable Counter Reset Control
Counter Reset Mode Resets R & N Counters.
RF Fractional-N Selection
CMOS Output Control
In the Speedy Lock mode, the OUT0 and OUT1 pins can be utilized as synchronous switches between active low
and a tri-state. The Speedy Lock mode activates the OUT0 and OUT1 pins to be connected to GROUND with a
low impedance ( < 150 ) while a high charge pump gain (
a programmable CMOS output, the CMOS output bit(RF_N[20] = LOW) should be activated and then the desired
logic level should be programmed with the control bits RF_N[18] for OUT0 and RF_N[19] for OUT1.
RF_CTL_WORD
RF_CTL_WORD
IF_CTL_WORD
Control Words
Control Words
Control Words
CMOS
Control Bits
Control Bits
Control Bits
RF_N[23]
RF_N[21]
RF_N[20]
RF_N[19]
RF_N[18]
IF_N[21]
RF_CNT_RST
IF_CNT_RST
Speedy Lock
Frac-N_SEL
Acronym
Acronym
Acronym
OUT1
OUT0
CMOS Output
Voltage LOW
Voltage LOW
Operation
Operation
Reserved
LOW (0)
LOW (0)
LOW (0)
Normal
Normal
8X) is selected and otherwise to a tri-state. For using
Speedy Lock Mode
Fractional-N Mode
RF Counter Reset
Voltage HIGH
Voltage HIGH
IF Counter
HIGH (1)
HIGH (1)
HIGH (1)
Reset
RF; PLL Mode
Comments
Comments
Comments
Selection
S1M8831A/33
Pin #23
Pin #24
RF
IF
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