S1M8831A/33
FRACTIONAL-N RF/INTEGER-N IF DUAL PLL
PIN DESCRIPTION (Continued)
Pin No.
21
22
23
Pin Name
VPIF
VDDIF
OUT1
24
OUT0
I/O
Descriptions
–
Power supply for IF charge pump. Must be ≥ VDDRF and VDDIF.
–
IF PLL power supply (2.7V to 4.0V). Must be equal to VDDRF.
O Programmable CMOS output. Level of the output is controlled by
RF_N[19] bit.
O Programmable CMOS output. Level of the output is controlled by
RF_N[18] bit. In the speedy lock mode, the OUT0 and OUT1 pins can be
utilized as synchronous switches between active low and tri-state.
6